Коррекция орбиты некоторых периодических комет от 25 ноября ..
Добавлено: 26 ноя 2025 09:09Коррекция орбиты некоторых периодических комет от 25 ноября 2025 года, MPEC 2025-W130
Orbital elements:
3I/ATLAS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 29.48334 TT Pike
q 1.3564227 (2000.0) P Q
z -3.7887944 Peri. 128.00851 -0.96791634 -0.24577648
+/-0.0001743 Node 322.15507 -0.24886059 +0.90890346
e 6.1392065 Incl. 175.11294 -0.03473285 +0.33688041
From 4468 observations 2025 May 8-Nov. 25, mean residual 0".5.
24P/Schaumasse
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 8.34227 TT Pike
q 1.1839442 (2000.0) P Q
n 0.12054613 Peri. 58.48272 -0.71166152 -0.67484653
a 4.0585155 Node 78.27177 +0.55777944 -0.71173915
e 0.7082815 Incl. 11.50226 +0.42710651 -0.19496036
P 8.18
From 848 observations 2017 July 24-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.24, A2 = +0.0250.
29P/Schwassmann-Wachmann
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2019 Apr. 28.41378 TT Pike
q 5.7969064 (2000.0) P Q
n 0.06610624 Peri. 51.91826 +0.98942791 -0.08138629
a 6.0576996 Node 312.40184 +0.01173892 +0.86991813
e 0.0430515 Incl. 9.35523 +0.14454965 +0.48643470
P 14.9
From 17029 observations 2020 Jan. 1-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = -1.56, A2 = +2.0957.
40P/Vaisala
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 12.01829 TT Pike
q 1.8237664 (2000.0) P Q
n 0.08966652 Peri. 52.05852 -0.98723685 +0.02657113
a 4.9436665 Node 128.90005 -0.06929996 -0.95941605
e 0.6310903 Incl. 11.64053 +0.14339079 -0.28073978
P 11.0
From 54 observations 2024 Nov. 29-2025 Nov. 25, mean residual 0".6.
43P/Wolf-Harrington
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 4.58329 TT Pike
q 2.4427829 (2000.0) P Q
n 0.10934172 Peri. 223.78794 -0.29693418 -0.94371875
a 4.3312386 Node 243.97989 +0.91465948 -0.23726908
e 0.4360082 Incl. 9.33000 +0.27427746 -0.23043068
P 9.01
From 1180 observations 2023 Sept. 11-2025 Nov. 25, mean residual 0".5.
Nongravitational parameters A1 = -2.28, A2 = +1.2412.
47P/Ashbrook-Jackson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 28.00476 TT Pike
q 2.8074555 (2000.0) P Q
n 0.11800659 Peri. 357.91828 +0.99593414 +0.08924398
a 4.1165356 Node 356.88094 -0.07904800 +0.80041059
e 0.3180053 Incl. 13.03942 -0.04320427 +0.59277179
P 8.35
From 2046 observations 2012 Feb. 15-2025 Nov. 22, mean residual 0".7.
Nongravitational parameters A1 = -0.10, A2 = -0.0136.
48P/Johnson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 2.66132 TT Pike
q 2.0067839 (2000.0) P Q
n 0.15057012 Peri. 216.78731 +0.82454380 +0.52982456
a 3.4992651 Node 110.06367 -0.45560807 +0.82979870
e 0.4265127 Incl. 12.20177 -0.33548295 +0.17527141
P 6.55
From 1361 observations 2018 Feb. 16-2025 Nov. 25, mean residual 0".7.
Nongravitational parameters A1 = +0.55, A2 = +0.0552.
63P/Wild
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 6.16680 TT Pike
q 1.9745642 (2000.0) P Q
n 0.07325195 Peri. 168.73538 -0.97281367 -0.23121884
a 5.6570489 Node 357.76502 +0.17769646 -0.70898438
e 0.6509551 Incl. 19.61603 +0.14851777 -0.66624245
P 13.5
From 1976 observations 1960 Apr. 16-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.38, A2 = -0.1100.
76P/West-Kohoutek-Ikemura
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Apr. 13.64315 TT Pike
q 1.5968128 (2000.0) P Q
n 0.15268383 Peri. 0.02300 +0.10229212 -0.85713516
a 3.4668950 Node 84.10900 +0.91258826 -0.12110488
e 0.5394113 Incl. 30.49828 +0.39587750 +0.50065250
P 6.46
From 749 observations 2007 Jan. 1-2025 Nov. 25, mean residual 0".7.
Nongravitational parameters A1 = +0.01, A2 = -0.0034.
78P/Gehrels
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 June 25.07097 TT Pike
q 2.0045782 (2000.0) P Q
n 0.13666068 Peri. 192.78037 +0.72871071 -0.68258419
a 3.7328483 Node 210.49714 +0.63751272 +0.70565292
e 0.4629896 Incl. 6.25722 +0.25011646 +0.19008623
P 7.21
From 2741 observations 2018 May 15-2025 Nov. 22, mean residual 0".6.
Nongravitational parameters A1 = -0.81, A2 = -0.1809.
87P/Bus
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2029 July 2.05724 TT Pike
q 3.5717824 (2000.0) P Q
n 0.10486226 Peri. 63.96232 -0.50195392 +0.86488097
a 4.4537235 Node 175.89868 -0.81563587 -0.47150746
e 0.1980233 Incl. 3.85878 -0.28771580 -0.17222550
P 9.40
From 449 observations 2019 Dec. 31-2020 Sept. 5, mean residual 0".6.
Nongravitational parameters A1 = +1.94, A2 = +0.4776.
91P/Russell
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2028 Oct. 25.49693 TT Pike
q 3.1056439 (2000.0) P Q
n 0.11632306 Peri. 356.96758 -0.51194952 +0.82367516
a 4.1561591 Node 242.11753 -0.78221216 -0.56432838
e 0.2527611 Incl. 16.01484 -0.35503779 +0.05561214
P 8.47
From 279 observations 2004 Mar. 18-2021 Aug. 30, mean residual 0".8.
Nongravitational parameters A1 = -0.10, A2 = +0.0050.
111P/Helin-Roman-Crockett
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2029 Dec. 6.79728 TT Pike
q 3.7079884 (2000.0) P Q
n 0.11645431 Peri. 1.56915 -0.02265420 -0.99702350
a 4.1530358 Node 89.73322 +0.91644200 -0.05016822
e 0.1071619 Incl. 4.22628 +0.39952578 +0.05854313
P 8.46
From 76 observations 1993 June 25-2012 Dec. 21, mean residual 0".3.
Nongravitational parameters A1 = +0.48, A2 = +0.0149.
112P/Urata-Niijima
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 21.83929 TT Pike
q 1.4411971 (2000.0) P Q
n 0.14912192 Peri. 21.57094 +0.61364236 -0.75945135
a 3.5218841 Node 31.80146 +0.65115070 +0.33198084
e 0.5907881 Incl. 24.20330 +0.44659356 +0.55948402
P 6.61
From 509 observations 2006 Aug. 2-2020 Apr. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.04, A2 = +0.0025.
123P/West-Hartley
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 22.09634 TT Pike
q 2.1580280 (2000.0) P Q
n 0.12867526 Peri. 103.92961 -0.83970720 -0.50898795
a 3.8857306 Node 45.88010 +0.33765362 -0.76234844
e 0.4446275 Incl. 15.28672 +0.42530208 -0.39969505
P 7.66
From 3213 observations 2010 Sept. 12-2025 Nov. 24, mean residual 0".7.
Nongravitational parameters A1 = -0.66, A2 = +0.0114.
128P/Shoemaker-Holt
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 16.92831 TT Pike
q 3.0369650 (2000.0) P Q
n 0.10389891 Peri. 210.53922 +0.42588292 -0.90375776
a 4.4812111 Node 214.30697 +0.84476314 +0.41419028
e 0.3222892 Incl. 4.37147 +0.32403544 +0.10802001
P 9.49
From 1001 observations 1987 Sept. 24-2025 Nov. 23, mean residual 0".9.
136P/Mueller
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Jan. 3.73983 TT Pike
q 2.9590941 (2000.0) P Q
n 0.11502426 Peri. 225.39077 +0.99229714 -0.05530946
a 4.1873869 Node 137.41158 +0.08474655 +0.95573472
e 0.2933316 Incl. 9.42752 -0.09035709 +0.28898445
P 8.57
From 449 observations 2016 Aug. 5-2025 Nov. 25, mean residual 0".7.
Nongravitational parameters A1 = -0.79, A2 = +0.1529.
145P/Shoemaker-Levy
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 31.93363 TT Pike
q 1.8897200 (2000.0) P Q
n 0.11745778 Peri. 10.41890 +0.79825375 -0.59584658
a 4.1293483 Node 26.76678 +0.53759679 +0.63887050
e 0.5423685 Incl. 11.27821 +0.27162591 +0.48663265
P 8.39
From 1059 observations 1991 Sept. 12-2025 Nov. 21, mean residual 0".6.
Nongravitational parameters A1 = +0.08, A2 = -0.0171.
164P/Christensen
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 27.37452 TT Pike
q 1.6748678 (2000.0) P Q
n 0.14119600 Peri. 325.93241 +0.56251709 -0.77787840
a 3.6524795 Node 88.26758 +0.80720982 +0.44341565
e 0.5414436 Incl. 16.27635 +0.17884862 +0.44529513
P 6.98
From 1244 observations 2010 Oct. 7-2025 Nov. 25, mean residual 0".7.
171P/Spahr
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Sept. 25.02537 TT Pike
q 1.7663999 (2000.0) P Q
n 0.14713433 Peri. 347.07134 +0.00565859 -0.93055138
a 3.5535305 Node 101.69397 +0.94752597 -0.11203600
e 0.5029169 Incl. 21.95497 +0.31962873 +0.34860015
P 6.70
From 644 observations 2005 Sept. 1-2025 Nov. 19, mean residual 0".7.
Nongravitational parameters A1 = +0.37, A2 = -0.1827.
195P/Hill
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 5.99998 TT Pike
q 4.4406089 (2000.0) P Q
n 0.06029775 Peri. 250.65376 -0.52714441 -0.66476128
a 6.4407329 Node 243.08973 +0.80912343 -0.58301105
e 0.3105429 Incl. 36.41504 -0.25968836 -0.46710872
P 16.3
From 954 observations 1993 Feb. 26-2025 Nov. 23, mean residual 0".6.
198P/ODAS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 21.12374 TT Pike
q 2.0048862 (2000.0) P Q
n 0.14247310 Peri. 69.27723 +0.38094475 -0.92459755
a 3.6306200 Node 358.33010 +0.83936900 +0.34613836
e 0.4477841 Incl. 1.33930 +0.38773803 +0.15908365
P 6.92
From 29 observations 2005 Oct. 7-2012 Jan. 27, mean residual 0".4.
Nongravitational parameters A1 = -9.84, A2 = +8.5261.
206P/Barnard-Boattini
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2027 Sept. 14.27439 TT Pike
q 1.5702603 (2000.0) P Q
n 0.15099117 Peri. 189.56244 +0.85974111 -0.46541982
a 3.4927569 Node 202.31478 +0.49751911 +0.85625378
e 0.5504238 Incl. 33.63415 +0.11541214 -0.22408446
P 6.53
From 277 observations 2008 Oct. 7-2009 Jan. 4, mean residual 0".6.
217P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 24.96379 TT Pike
q 1.2263052 (2000.0) P Q
n 0.12570631 Peri. 247.04391 +0.95777317 -0.22292678
a 3.9466747 Node 125.36815 +0.26648940 +0.92538494
e 0.6892814 Incl. 12.86675 -0.10795346 +0.30653934
P 7.84
From 3412 observations 2001 June 21-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.16, A2 = +0.0032.
240P/NEAT
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.95062 TT Pike
q 2.1216365 (2000.0) P Q
n 0.12991768 Peri. 352.07814 +0.37982665 -0.84087323
a 3.8609177 Node 74.91150 +0.86911302 +0.18163030
e 0.4504839 Incl. 23.53673 +0.31681899 +0.50984571
P 7.59
From 881 observations 2020 Mar. 23-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = -0.14, A2 = +0.4736.
240P/NEAT B
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.80052 TT Pike
q 2.1212530 (2000.0) P Q
n 0.13008946 Peri. 351.99707 +0.38088550 -0.84049720
a 3.8575181 Node 74.92051 +0.86889270 +0.18286264
e 0.4500990 Incl. 23.52112 +0.31615141 +0.51002520
P 7.58
From 167 observations 2025 Oct. 16-Nov. 23, mean residual 0".3.
242P/Spahr
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 23.54501 TT Pike
q 3.9719297 (2000.0) P Q
n 0.07562022 Peri. 245.05362 +0.41925564 -0.90786652
a 5.5383120 Node 180.18806 +0.89683353 +0.41385766
e 0.2828267 Incl. 32.42826 -0.14111817 -0.06708369
P 13.0
From 1099 observations 2011 July 20-2025 Nov. 23, mean residual 0".7.
261P/Larson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 27.41316 TT Pike
q 2.0141968 (2000.0) P Q
n 0.15124301 Peri. 67.36668 +0.99478352 +0.02560802
a 3.4888785 Node 291.05039 -0.06589642 +0.90022410
e 0.4226807 Incl. 6.07342 +0.07786793 +0.43467322
P 6.52
From 1169 observations 2005 July 3-2025 Nov. 25, mean residual 0".8.
Nongravitational parameters A1 = +0.35, A2 = +0.0856.
273P/Pons-Gambart
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2012 Dec. 22.80335 TT Pike
q 0.8054703 (2000.0) P Q
n 0.00546791 Peri. 20.10486 +0.56464559 -0.69729576
a 31.9096216 Node 320.34733 -0.81971278 -0.53612994
e 0.9747578 Incl. 136.21776 -0.09615777 +0.47575552
P 180
From 1114 observations 2012 Nov. 29-2014 Apr. 4, mean residual 0".6.
Nongravitational parameters A1 = +0.04, A2 = +0.1287.
276P/Vorobjov
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 11.96721 TT Pike
q 3.8985068 (2000.0) P Q
n 0.07893172 Peri. 199.65515 +0.63883347 -0.75805807
a 5.3823054 Node 211.06412 +0.73552419 +0.65183523
e 0.2756809 Incl. 14.74155 +0.22560136 +0.02141957
P 12.5
From 1177 observations 2000 Dec. 19-2025 Nov. 25, mean residual 0".6.
302P/Lemmon-PANSTARRS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 9.29288 TT Pike
q 3.2885999 (2000.0) P Q
n 0.11185756 Peri. 208.60752 +0.86658652 +0.49094558
a 4.2660488 Node 121.71710 -0.43548598 +0.83152093
e 0.2291228 Incl. 6.03566 -0.24367966 +0.25989495
P 8.81
From 778 observations 2007 Aug. 16-2025 Nov. 23, mean residual 0".6.
306P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 1.64707 TT Pike
q 1.2729847 (2000.0) P Q
n 0.17850235 Peri. 0.91457 +0.95236068 +0.30145444
a 3.1239693 Node 341.33889 -0.28071691 +0.80728958
e 0.5925105 Incl. 8.30172 -0.11919377 +0.50735465
P 5.52
From 380 observations 2003 July 30-2025 Nov. 21, mean residual 0".9.
315P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2027 Nov. 16.46719 TT Pike
q 2.3577816 (2000.0) P Q
n 0.08990468 Peri. 65.95862 -0.66152173 -0.69419651
a 4.9349320 Node 68.62475 +0.52827260 -0.69986776
e 0.5222261 Incl. 17.73686 +0.53227537 -0.16815566
P 11.0
From 2384 observations 2004 Nov. 3-2025 Nov. 25, mean residual 0".7.
331P/Gibbs
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 25.34820 TT Pike
q 2.8783955 (2000.0) P Q
n 0.18941774 Peri. 185.75459 +0.73818493 -0.66696226
a 3.0027715 Node 216.74177 +0.62548442 +0.73289441
e 0.0414204 Incl. 9.74105 +0.25269001 +0.13426512
P 5.20
From 188 observations 2004 Aug. 26-2025 Nov. 18, mean residual 0".8.
486P/Leonard
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Apr. 3.81471 TT Pike
q 2.3089455 (2000.0) P Q
n 0.14268638 Peri. 93.93701 +0.68102496 +0.73185767
a 3.6270012 Node 219.02334 -0.68620889 +0.62627337
e 0.3634010 Incl. 2.20970 -0.25558242 +0.26863734
P 6.91
From 512 observations 2018 June 8-2025 Nov. 20, mean residual 0".7.
493P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 14.09772 TT Pike
q 3.8229663 (2000.0) P Q
n 0.05128093 Peri. 83.22292 +0.10076811 -0.99487968
a 7.1751683 Node 1.08842 +0.67216771 +0.06232794
e 0.4671949 Incl. 24.10832 +0.73350961 +0.07955904
P 19.2
From 382 observations 2024 Aug. 2-2025 Nov. 23, mean residual 0".5.
509P/Catalina
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Mar. 19.81946 TT Pike
q 3.6928852 (2000.0) P Q
n 0.05278089 Peri. 180.10044 -0.09250002 -0.98450326
a 7.0385779 Node 275.20813 +0.91365282 -0.02443870
e 0.4753365 Incl. 8.60401 +0.39583112 -0.17365507
P 18.7
From 356 observations 2006 Oct. 19-2025 Nov. 22, mean residual 0".7.
513P/Broughton
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 June 13.77189 TT Pike
q 3.2536496 (2000.0) P Q
n 0.05043364 Peri. 304.86677 +0.95209401 +0.00048679
a 7.2553075 Node 56.99699 +0.17707915 +0.81440764
e 0.5515490 Incl. 21.38563 -0.24931902 +0.58029300
P 19.5
From 166 observations 2005 Aug. 26-2025 Nov. 25, mean residual 0".6.
Orbital elements:
3I/ATLAS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 29.48334 TT Pike
q 1.3564227 (2000.0) P Q
z -3.7887944 Peri. 128.00851 -0.96791634 -0.24577648
+/-0.0001743 Node 322.15507 -0.24886059 +0.90890346
e 6.1392065 Incl. 175.11294 -0.03473285 +0.33688041
From 4468 observations 2025 May 8-Nov. 25, mean residual 0".5.
24P/Schaumasse
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 8.34227 TT Pike
q 1.1839442 (2000.0) P Q
n 0.12054613 Peri. 58.48272 -0.71166152 -0.67484653
a 4.0585155 Node 78.27177 +0.55777944 -0.71173915
e 0.7082815 Incl. 11.50226 +0.42710651 -0.19496036
P 8.18
From 848 observations 2017 July 24-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.24, A2 = +0.0250.
29P/Schwassmann-Wachmann
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2019 Apr. 28.41378 TT Pike
q 5.7969064 (2000.0) P Q
n 0.06610624 Peri. 51.91826 +0.98942791 -0.08138629
a 6.0576996 Node 312.40184 +0.01173892 +0.86991813
e 0.0430515 Incl. 9.35523 +0.14454965 +0.48643470
P 14.9
From 17029 observations 2020 Jan. 1-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = -1.56, A2 = +2.0957.
40P/Vaisala
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 12.01829 TT Pike
q 1.8237664 (2000.0) P Q
n 0.08966652 Peri. 52.05852 -0.98723685 +0.02657113
a 4.9436665 Node 128.90005 -0.06929996 -0.95941605
e 0.6310903 Incl. 11.64053 +0.14339079 -0.28073978
P 11.0
From 54 observations 2024 Nov. 29-2025 Nov. 25, mean residual 0".6.
43P/Wolf-Harrington
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 4.58329 TT Pike
q 2.4427829 (2000.0) P Q
n 0.10934172 Peri. 223.78794 -0.29693418 -0.94371875
a 4.3312386 Node 243.97989 +0.91465948 -0.23726908
e 0.4360082 Incl. 9.33000 +0.27427746 -0.23043068
P 9.01
From 1180 observations 2023 Sept. 11-2025 Nov. 25, mean residual 0".5.
Nongravitational parameters A1 = -2.28, A2 = +1.2412.
47P/Ashbrook-Jackson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 28.00476 TT Pike
q 2.8074555 (2000.0) P Q
n 0.11800659 Peri. 357.91828 +0.99593414 +0.08924398
a 4.1165356 Node 356.88094 -0.07904800 +0.80041059
e 0.3180053 Incl. 13.03942 -0.04320427 +0.59277179
P 8.35
From 2046 observations 2012 Feb. 15-2025 Nov. 22, mean residual 0".7.
Nongravitational parameters A1 = -0.10, A2 = -0.0136.
48P/Johnson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 2.66132 TT Pike
q 2.0067839 (2000.0) P Q
n 0.15057012 Peri. 216.78731 +0.82454380 +0.52982456
a 3.4992651 Node 110.06367 -0.45560807 +0.82979870
e 0.4265127 Incl. 12.20177 -0.33548295 +0.17527141
P 6.55
From 1361 observations 2018 Feb. 16-2025 Nov. 25, mean residual 0".7.
Nongravitational parameters A1 = +0.55, A2 = +0.0552.
63P/Wild
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 6.16680 TT Pike
q 1.9745642 (2000.0) P Q
n 0.07325195 Peri. 168.73538 -0.97281367 -0.23121884
a 5.6570489 Node 357.76502 +0.17769646 -0.70898438
e 0.6509551 Incl. 19.61603 +0.14851777 -0.66624245
P 13.5
From 1976 observations 1960 Apr. 16-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.38, A2 = -0.1100.
76P/West-Kohoutek-Ikemura
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Apr. 13.64315 TT Pike
q 1.5968128 (2000.0) P Q
n 0.15268383 Peri. 0.02300 +0.10229212 -0.85713516
a 3.4668950 Node 84.10900 +0.91258826 -0.12110488
e 0.5394113 Incl. 30.49828 +0.39587750 +0.50065250
P 6.46
From 749 observations 2007 Jan. 1-2025 Nov. 25, mean residual 0".7.
Nongravitational parameters A1 = +0.01, A2 = -0.0034.
78P/Gehrels
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 June 25.07097 TT Pike
q 2.0045782 (2000.0) P Q
n 0.13666068 Peri. 192.78037 +0.72871071 -0.68258419
a 3.7328483 Node 210.49714 +0.63751272 +0.70565292
e 0.4629896 Incl. 6.25722 +0.25011646 +0.19008623
P 7.21
From 2741 observations 2018 May 15-2025 Nov. 22, mean residual 0".6.
Nongravitational parameters A1 = -0.81, A2 = -0.1809.
87P/Bus
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2029 July 2.05724 TT Pike
q 3.5717824 (2000.0) P Q
n 0.10486226 Peri. 63.96232 -0.50195392 +0.86488097
a 4.4537235 Node 175.89868 -0.81563587 -0.47150746
e 0.1980233 Incl. 3.85878 -0.28771580 -0.17222550
P 9.40
From 449 observations 2019 Dec. 31-2020 Sept. 5, mean residual 0".6.
Nongravitational parameters A1 = +1.94, A2 = +0.4776.
91P/Russell
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2028 Oct. 25.49693 TT Pike
q 3.1056439 (2000.0) P Q
n 0.11632306 Peri. 356.96758 -0.51194952 +0.82367516
a 4.1561591 Node 242.11753 -0.78221216 -0.56432838
e 0.2527611 Incl. 16.01484 -0.35503779 +0.05561214
P 8.47
From 279 observations 2004 Mar. 18-2021 Aug. 30, mean residual 0".8.
Nongravitational parameters A1 = -0.10, A2 = +0.0050.
111P/Helin-Roman-Crockett
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2029 Dec. 6.79728 TT Pike
q 3.7079884 (2000.0) P Q
n 0.11645431 Peri. 1.56915 -0.02265420 -0.99702350
a 4.1530358 Node 89.73322 +0.91644200 -0.05016822
e 0.1071619 Incl. 4.22628 +0.39952578 +0.05854313
P 8.46
From 76 observations 1993 June 25-2012 Dec. 21, mean residual 0".3.
Nongravitational parameters A1 = +0.48, A2 = +0.0149.
112P/Urata-Niijima
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 21.83929 TT Pike
q 1.4411971 (2000.0) P Q
n 0.14912192 Peri. 21.57094 +0.61364236 -0.75945135
a 3.5218841 Node 31.80146 +0.65115070 +0.33198084
e 0.5907881 Incl. 24.20330 +0.44659356 +0.55948402
P 6.61
From 509 observations 2006 Aug. 2-2020 Apr. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.04, A2 = +0.0025.
123P/West-Hartley
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 22.09634 TT Pike
q 2.1580280 (2000.0) P Q
n 0.12867526 Peri. 103.92961 -0.83970720 -0.50898795
a 3.8857306 Node 45.88010 +0.33765362 -0.76234844
e 0.4446275 Incl. 15.28672 +0.42530208 -0.39969505
P 7.66
From 3213 observations 2010 Sept. 12-2025 Nov. 24, mean residual 0".7.
Nongravitational parameters A1 = -0.66, A2 = +0.0114.
128P/Shoemaker-Holt
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 16.92831 TT Pike
q 3.0369650 (2000.0) P Q
n 0.10389891 Peri. 210.53922 +0.42588292 -0.90375776
a 4.4812111 Node 214.30697 +0.84476314 +0.41419028
e 0.3222892 Incl. 4.37147 +0.32403544 +0.10802001
P 9.49
From 1001 observations 1987 Sept. 24-2025 Nov. 23, mean residual 0".9.
136P/Mueller
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Jan. 3.73983 TT Pike
q 2.9590941 (2000.0) P Q
n 0.11502426 Peri. 225.39077 +0.99229714 -0.05530946
a 4.1873869 Node 137.41158 +0.08474655 +0.95573472
e 0.2933316 Incl. 9.42752 -0.09035709 +0.28898445
P 8.57
From 449 observations 2016 Aug. 5-2025 Nov. 25, mean residual 0".7.
Nongravitational parameters A1 = -0.79, A2 = +0.1529.
145P/Shoemaker-Levy
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 31.93363 TT Pike
q 1.8897200 (2000.0) P Q
n 0.11745778 Peri. 10.41890 +0.79825375 -0.59584658
a 4.1293483 Node 26.76678 +0.53759679 +0.63887050
e 0.5423685 Incl. 11.27821 +0.27162591 +0.48663265
P 8.39
From 1059 observations 1991 Sept. 12-2025 Nov. 21, mean residual 0".6.
Nongravitational parameters A1 = +0.08, A2 = -0.0171.
164P/Christensen
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 27.37452 TT Pike
q 1.6748678 (2000.0) P Q
n 0.14119600 Peri. 325.93241 +0.56251709 -0.77787840
a 3.6524795 Node 88.26758 +0.80720982 +0.44341565
e 0.5414436 Incl. 16.27635 +0.17884862 +0.44529513
P 6.98
From 1244 observations 2010 Oct. 7-2025 Nov. 25, mean residual 0".7.
171P/Spahr
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Sept. 25.02537 TT Pike
q 1.7663999 (2000.0) P Q
n 0.14713433 Peri. 347.07134 +0.00565859 -0.93055138
a 3.5535305 Node 101.69397 +0.94752597 -0.11203600
e 0.5029169 Incl. 21.95497 +0.31962873 +0.34860015
P 6.70
From 644 observations 2005 Sept. 1-2025 Nov. 19, mean residual 0".7.
Nongravitational parameters A1 = +0.37, A2 = -0.1827.
195P/Hill
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 5.99998 TT Pike
q 4.4406089 (2000.0) P Q
n 0.06029775 Peri. 250.65376 -0.52714441 -0.66476128
a 6.4407329 Node 243.08973 +0.80912343 -0.58301105
e 0.3105429 Incl. 36.41504 -0.25968836 -0.46710872
P 16.3
From 954 observations 1993 Feb. 26-2025 Nov. 23, mean residual 0".6.
198P/ODAS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 21.12374 TT Pike
q 2.0048862 (2000.0) P Q
n 0.14247310 Peri. 69.27723 +0.38094475 -0.92459755
a 3.6306200 Node 358.33010 +0.83936900 +0.34613836
e 0.4477841 Incl. 1.33930 +0.38773803 +0.15908365
P 6.92
From 29 observations 2005 Oct. 7-2012 Jan. 27, mean residual 0".4.
Nongravitational parameters A1 = -9.84, A2 = +8.5261.
206P/Barnard-Boattini
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2027 Sept. 14.27439 TT Pike
q 1.5702603 (2000.0) P Q
n 0.15099117 Peri. 189.56244 +0.85974111 -0.46541982
a 3.4927569 Node 202.31478 +0.49751911 +0.85625378
e 0.5504238 Incl. 33.63415 +0.11541214 -0.22408446
P 6.53
From 277 observations 2008 Oct. 7-2009 Jan. 4, mean residual 0".6.
217P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 24.96379 TT Pike
q 1.2263052 (2000.0) P Q
n 0.12570631 Peri. 247.04391 +0.95777317 -0.22292678
a 3.9466747 Node 125.36815 +0.26648940 +0.92538494
e 0.6892814 Incl. 12.86675 -0.10795346 +0.30653934
P 7.84
From 3412 observations 2001 June 21-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = +0.16, A2 = +0.0032.
240P/NEAT
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.95062 TT Pike
q 2.1216365 (2000.0) P Q
n 0.12991768 Peri. 352.07814 +0.37982665 -0.84087323
a 3.8609177 Node 74.91150 +0.86911302 +0.18163030
e 0.4504839 Incl. 23.53673 +0.31681899 +0.50984571
P 7.59
From 881 observations 2020 Mar. 23-2025 Nov. 25, mean residual 0".6.
Nongravitational parameters A1 = -0.14, A2 = +0.4736.
240P/NEAT B
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.80052 TT Pike
q 2.1212530 (2000.0) P Q
n 0.13008946 Peri. 351.99707 +0.38088550 -0.84049720
a 3.8575181 Node 74.92051 +0.86889270 +0.18286264
e 0.4500990 Incl. 23.52112 +0.31615141 +0.51002520
P 7.58
From 167 observations 2025 Oct. 16-Nov. 23, mean residual 0".3.
242P/Spahr
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 23.54501 TT Pike
q 3.9719297 (2000.0) P Q
n 0.07562022 Peri. 245.05362 +0.41925564 -0.90786652
a 5.5383120 Node 180.18806 +0.89683353 +0.41385766
e 0.2828267 Incl. 32.42826 -0.14111817 -0.06708369
P 13.0
From 1099 observations 2011 July 20-2025 Nov. 23, mean residual 0".7.
261P/Larson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 27.41316 TT Pike
q 2.0141968 (2000.0) P Q
n 0.15124301 Peri. 67.36668 +0.99478352 +0.02560802
a 3.4888785 Node 291.05039 -0.06589642 +0.90022410
e 0.4226807 Incl. 6.07342 +0.07786793 +0.43467322
P 6.52
From 1169 observations 2005 July 3-2025 Nov. 25, mean residual 0".8.
Nongravitational parameters A1 = +0.35, A2 = +0.0856.
273P/Pons-Gambart
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2012 Dec. 22.80335 TT Pike
q 0.8054703 (2000.0) P Q
n 0.00546791 Peri. 20.10486 +0.56464559 -0.69729576
a 31.9096216 Node 320.34733 -0.81971278 -0.53612994
e 0.9747578 Incl. 136.21776 -0.09615777 +0.47575552
P 180
From 1114 observations 2012 Nov. 29-2014 Apr. 4, mean residual 0".6.
Nongravitational parameters A1 = +0.04, A2 = +0.1287.
276P/Vorobjov
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 11.96721 TT Pike
q 3.8985068 (2000.0) P Q
n 0.07893172 Peri. 199.65515 +0.63883347 -0.75805807
a 5.3823054 Node 211.06412 +0.73552419 +0.65183523
e 0.2756809 Incl. 14.74155 +0.22560136 +0.02141957
P 12.5
From 1177 observations 2000 Dec. 19-2025 Nov. 25, mean residual 0".6.
302P/Lemmon-PANSTARRS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 9.29288 TT Pike
q 3.2885999 (2000.0) P Q
n 0.11185756 Peri. 208.60752 +0.86658652 +0.49094558
a 4.2660488 Node 121.71710 -0.43548598 +0.83152093
e 0.2291228 Incl. 6.03566 -0.24367966 +0.25989495
P 8.81
From 778 observations 2007 Aug. 16-2025 Nov. 23, mean residual 0".6.
306P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 1.64707 TT Pike
q 1.2729847 (2000.0) P Q
n 0.17850235 Peri. 0.91457 +0.95236068 +0.30145444
a 3.1239693 Node 341.33889 -0.28071691 +0.80728958
e 0.5925105 Incl. 8.30172 -0.11919377 +0.50735465
P 5.52
From 380 observations 2003 July 30-2025 Nov. 21, mean residual 0".9.
315P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2027 Nov. 16.46719 TT Pike
q 2.3577816 (2000.0) P Q
n 0.08990468 Peri. 65.95862 -0.66152173 -0.69419651
a 4.9349320 Node 68.62475 +0.52827260 -0.69986776
e 0.5222261 Incl. 17.73686 +0.53227537 -0.16815566
P 11.0
From 2384 observations 2004 Nov. 3-2025 Nov. 25, mean residual 0".7.
331P/Gibbs
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 25.34820 TT Pike
q 2.8783955 (2000.0) P Q
n 0.18941774 Peri. 185.75459 +0.73818493 -0.66696226
a 3.0027715 Node 216.74177 +0.62548442 +0.73289441
e 0.0414204 Incl. 9.74105 +0.25269001 +0.13426512
P 5.20
From 188 observations 2004 Aug. 26-2025 Nov. 18, mean residual 0".8.
486P/Leonard
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Apr. 3.81471 TT Pike
q 2.3089455 (2000.0) P Q
n 0.14268638 Peri. 93.93701 +0.68102496 +0.73185767
a 3.6270012 Node 219.02334 -0.68620889 +0.62627337
e 0.3634010 Incl. 2.20970 -0.25558242 +0.26863734
P 6.91
From 512 observations 2018 June 8-2025 Nov. 20, mean residual 0".7.
493P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 14.09772 TT Pike
q 3.8229663 (2000.0) P Q
n 0.05128093 Peri. 83.22292 +0.10076811 -0.99487968
a 7.1751683 Node 1.08842 +0.67216771 +0.06232794
e 0.4671949 Incl. 24.10832 +0.73350961 +0.07955904
P 19.2
From 382 observations 2024 Aug. 2-2025 Nov. 23, mean residual 0".5.
509P/Catalina
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Mar. 19.81946 TT Pike
q 3.6928852 (2000.0) P Q
n 0.05278089 Peri. 180.10044 -0.09250002 -0.98450326
a 7.0385779 Node 275.20813 +0.91365282 -0.02443870
e 0.4753365 Incl. 8.60401 +0.39583112 -0.17365507
P 18.7
From 356 observations 2006 Oct. 19-2025 Nov. 22, mean residual 0".7.
513P/Broughton
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 June 13.77189 TT Pike
q 3.2536496 (2000.0) P Q
n 0.05043364 Peri. 304.86677 +0.95209401 +0.00048679
a 7.2553075 Node 56.99699 +0.17707915 +0.81440764
e 0.5515490 Incl. 21.38563 -0.24931902 +0.58029300
P 19.5
From 166 observations 2005 Aug. 26-2025 Nov. 25, mean residual 0".6.