Коррекция орбиты некоторых периодических комет от 18 декабря ..
Добавлено: 19 дек 2025 08:08Коррекция орбиты некоторых периодических комет от 18 декабря 2025 года, MPEC 2025-Y51
Orbital elements:
3I/ATLAS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 29.48277 TT Pike
q 1.3564837 (2000.0) P Q
z -3.7889568 Peri. 128.00724 -0.96791181 -0.24579422
+/-0.0000349 Node 322.15485 -0.24887740 +0.90889888
e 6.1396579 Incl. 175.11293 -0.03473862 +0.33687984
From 5376 observations 2025 May 8-Dec. 18, mean residual 0".5.
24P/Schaumasse
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 8.34244 TT Pike
q 1.1839385 (2000.0) P Q
n 0.12054315 Peri. 58.48325 -0.71166617 -0.67484141
a 4.0585823 Node 78.27165 +0.55777392 -0.71174319
e 0.7082877 Incl. 11.50231 +0.42710598 -0.19496334
P 8.18
From 1039 observations 2017 July 24-2025 Dec. 18, mean residual 0".6.
Nongravitational parameters A1 = +0.08, A2 = -0.0101.
29P/Schwassmann-Wachmann
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2019 Apr. 28.33557 TT Pike
q 5.7968680 (2000.0) P Q
n 0.06610678 Peri. 51.91227 +0.98943639 -0.08128323
a 6.0576665 Node 312.40186 +0.01164833 +0.86991934
e 0.0430526 Incl. 9.35523 +0.14449893 +0.48644977
P 14.9
From 17319 observations 2020 Jan. 1-2025 Dec. 18, mean residual 0".6.
Nongravitational parameters A1 = -1.60, A2 = +1.5302.
40P/Vaisala
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 12.01697 TT Pike
q 1.8237774 (2000.0) P Q
n 0.08966756 Peri. 52.05715 -0.98723776 +0.02656237
a 4.9436282 Node 128.90093 -0.06929020 -0.95941683
e 0.6310852 Incl. 11.64036 +0.14338927 -0.28073792
P 11.0
From 78 observations 2024 Nov. 29-2025 Dec. 17, mean residual 0".6.
43P/Wolf-Harrington
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 4.58606 TT Pike
q 2.4427692 (2000.0) P Q
n 0.10935514 Peri. 223.78878 -0.29694658 -0.94371479
a 4.3308843 Node 243.97981 +0.91465653 -0.23728110
e 0.4359653 Incl. 9.33004 +0.27427387 -0.23043454
P 9.01
From 1261 observations 2023 Sept. 11-2025 Dec. 18, mean residual 0".5.
Nongravitational parameters A1 = -2.17, A2 = +0.8156.
47P/Ashbrook-Jackson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 28.00484 TT Pike
q 2.8074540 (2000.0) P Q
n 0.11800661 Peri. 357.91833 +0.99593422 +0.08924305
a 4.1165352 Node 356.88095 -0.07904723 +0.80041068
e 0.3180056 Incl. 13.03942 -0.04320374 +0.59277181
P 8.35
From 2131 observations 2012 Feb. 15-2025 Dec. 16, mean residual 0".7.
Nongravitational parameters A1 = -0.11, A2 = -0.0157.
48P/Johnson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 2.66236 TT Pike
q 2.0067877 (2000.0) P Q
n 0.15056961 Peri. 216.78783 +0.82454779 +0.52981838
a 3.4992730 Node 110.06357 -0.45560174 +0.82980202
e 0.4265130 Incl. 12.20175 -0.33548173 +0.17527434
P 6.55
From 1483 observations 2018 Feb. 16-2025 Dec. 18, mean residual 0".7.
Nongravitational parameters A1 = +0.49, A2 = +0.0556.
63P/Wild
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 6.16728 TT Pike
q 1.9745656 (2000.0) P Q
n 0.07325194 Peri. 168.73568 -0.97281490 -0.23121367
a 5.6570494 Node 357.76503 +0.17769268 -0.70898539
e 0.6509549 Incl. 19.61602 +0.14851422 -0.66624317
P 13.5
From 2003 observations 1960 Apr. 16-2025 Dec. 18, mean residual 0".6.
Nongravitational parameters A1 = +0.16, A2 = -0.1099.
78P/Gehrels
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 June 25.06701 TT Pike
q 2.0045656 (2000.0) P Q
n 0.13666146 Peri. 192.78014 +0.72871233 -0.68258245
a 3.7328341 Node 210.49724 +0.63751097 +0.70565444
e 0.4629910 Incl. 6.25722 +0.25011619 +0.19008686
P 7.21
From 2773 observations 2018 May 15-2025 Dec. 14, mean residual 0".6.
Nongravitational parameters A1 = -0.78, A2 = -0.2102.
123P/West-Hartley
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 22.09590 TT Pike
q 2.1580277 (2000.0) P Q
n 0.12867527 Peri. 103.92958 -0.83970682 -0.50898858
a 3.8857303 Node 45.88008 +0.33765418 -0.76234814
e 0.4446275 Incl. 15.28672 +0.42530237 -0.39969481
P 7.66
From 3289 observations 2010 Sept. 12-2025 Dec. 18, mean residual 0".7.
Nongravitational parameters A1 = -0.64, A2 = +0.0104.
124P/Mrkos
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 June 23.58862 TT Pike
q 1.7349024 (2000.0) P Q
n 0.15875357 Peri. 185.10915 -0.99608046 +0.08845103
a 3.3779538 Node 359.95941 -0.05063343 -0.57361422
e 0.4864043 Incl. 31.40192 -0.07252570 -0.81433601
P 6.21
From 882 observations 2020 Jan. 1-2025 Dec. 13, mean residual 0".4.
Nongravitational parameters A1 = -0.03, A2 = +0.0082.
128P/Shoemaker-Holt
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 16.92861 TT Pike
q 3.0369655 (2000.0) P Q
n 0.10389891 Peri. 210.53930 +0.42588175 -0.90375831
a 4.4812110 Node 214.30696 +0.84476368 +0.41418918
e 0.3222891 Incl. 4.37147 +0.32403558 +0.10801960
P 9.49
From 1017 observations 1987 Sept. 24-2025 Dec. 15, mean residual 0".9.
131P/Mueller
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Feb. 15.69492 TT Pike
q 2.4078088 (2000.0) P Q
n 0.13995748 Peri. 179.26563 +0.83480369 -0.54583234
a 3.6739957 Node 214.13279 +0.50446213 +0.81067897
e 0.3446348 Incl. 7.36220 +0.22050117 +0.21181753
P 7.04
From 867 observations 1990 Sept. 15-2025 Dec. 12, mean residual 0".8.
Nongravitational parameters A1 = +0.69, A2 = -0.0426.
136P/Mueller
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Jan. 3.72847 TT Pike
q 2.9590662 (2000.0) P Q
n 0.11502943 Peri. 225.38793 +0.99229971 -0.05526351
a 4.1872613 Node 137.41176 +0.08470221 +0.95573884
e 0.2933170 Incl. 9.42755 -0.09037045 +0.28897962
P 8.57
From 489 observations 2016 Aug. 5-2025 Dec. 16, mean residual 0".7.
Nongravitational parameters A1 = -0.38, A2 = +0.0597.
143P/Kowal-Mrkos
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Dec. 27.48895 TT Pike
q 2.9564173 (2000.0) P Q
n 0.09482650 Peri. 304.64400 -0.98972707 +0.11622801
a 4.7626600 Node 242.15929 -0.07944005 -0.93123030
e 0.3792508 Incl. 5.40258 -0.11886803 -0.34540002
P 10.4
From 255 observations 2020 July 28-2025 Dec. 15, mean residual 0".2.
145P/Shoemaker-Levy
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 31.93227 TT Pike
q 1.8897190 (2000.0) P Q
n 0.11745792 Peri. 10.41855 +0.79825743 -0.59584165
a 4.1293451 Node 26.76678 +0.53759285 +0.63887380
e 0.5423684 Incl. 11.27822 +0.27162291 +0.48663435
P 8.39
From 1169 observations 1991 Sept. 12-2025 Dec. 14, mean residual 0".6.
Nongravitational parameters A1 = +0.16, A2 = -0.0178.
164P/Christensen
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 27.37452 TT Pike
q 1.6748679 (2000.0) P Q
n 0.14119600 Peri. 325.93240 +0.56251711 -0.77787837
a 3.6524795 Node 88.26759 +0.80720982 +0.44341569
e 0.5414436 Incl. 16.27635 +0.17884855 +0.44529514
P 6.98
From 1243 observations 2010 Oct. 7-2025 Dec. 17, mean residual 0".7.
175P/Hergenrother
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 3.07073 TT Pike
q 2.3067600 (2000.0) P Q
n 0.13894194 Peri. 74.58011 -0.99372977 +0.07722926
a 3.6918764 Node 109.79604 -0.10184955 -0.92358990
e 0.3751795 Incl. 4.92941 +0.04612822 -0.37552276
P 7.09
From 855 observations 2000 Jan. 4-2025 Dec. 14, mean residual 0".7.
Nongravitational parameters A1 = +0.07, A2 = +0.0223.
195P/Hill
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 6.00028 TT Pike
q 4.4406071 (2000.0) P Q
n 0.06029776 Peri. 250.65382 -0.52714506 -0.66476070
a 6.4407328 Node 243.08973 +0.80912283 -0.58301188
e 0.3105432 Incl. 36.41505 -0.25968890 -0.46710852
P 16.3
From 988 observations 1993 Feb. 26-2025 Dec. 16, mean residual 0".6.
210P/Christensen
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 22.72671 TT Pike
q 0.5244174 (2000.0) P Q
n 0.17541075 Peri. 345.94961 +0.17411168 -0.96846930
a 3.1605688 Node 93.79677 +0.91983817 +0.09535321
e 0.8340750 Incl. 10.28728 +0.35154354 +0.23016294
P 5.62
From 682 observations 2008 Dec. 8-2025 Dec. 16, mean residual 0".7.
Nongravitational parameters A1 = -0.02, A2 = +0.0043.
217P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 24.96370 TT Pike
q 1.2263049 (2000.0) P Q
n 0.12570631 Peri. 247.04382 +0.95777348 -0.22292545
a 3.9466747 Node 125.36815 +0.26648811 +0.92538531
e 0.6892815 Incl. 12.86675 -0.10795389 +0.30653918
P 7.84
From 3456 observations 2001 June 21-2025 Dec. 16, mean residual 0".6.
Nongravitational parameters A1 = +0.17, A2 = +0.0032.
233P/La Sagra
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 8.10898 TT Pike
q 1.7767553 (2000.0) P Q
n 0.18709947 Peri. 26.98907 -0.19787720 -0.96182638
a 3.0275245 Node 74.91988 +0.86029682 -0.26283985
e 0.4131327 Incl. 11.29018 +0.46982336 +0.07619199
P 5.27
From 137 observations 2005 Feb. 9-2025 Dec. 15, mean residual 0".6.
235P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 22.66732 TT Pike
q 1.9779167 (2000.0) P Q
n 0.15409891 Peri. 352.19424 -0.97612009 +0.20913118
a 3.4456382 Node 200.17022 -0.18896364 -0.95088497
e 0.4259651 Incl. 9.81321 -0.10715555 -0.22821465
P 6.40
From 74 observations 2024 Nov. 21-2025 Dec. 14, mean residual 0".6.
240P/NEAT
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.94587 TT Pike
q 2.1216543 (2000.0) P Q
n 0.12991381 Peri. 352.07604 +0.37985477 -0.84086058
a 3.8609943 Node 74.91167 +0.86910737 +0.18166010
e 0.4504902 Incl. 23.53670 +0.31680079 +0.50985595
P 7.59
From 1353 observations 2020 Mar. 23-2025 Dec. 17, mean residual 0".5.
Nongravitational parameters A1 = +0.00, A2 = +0.6389.
240P/NEAT B
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.94002 TT Pike
q 2.1215561 (2000.0) P Q
n 0.12997045 Peri. 352.05403 +0.38014593 -0.84075903
a 3.8598725 Node 74.91390 +0.86904612 +0.18199968
e 0.4503559 Incl. 23.53219 +0.31661949 +0.50990231
P 7.58
From 496 observations 2025 Oct. 16-Dec. 13, mean residual 0".5.
242P/Spahr
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 23.54497 TT Pike
q 3.9719304 (2000.0) P Q
n 0.07562022 Peri. 245.05361 +0.41925581 -0.90786644
a 5.5383121 Node 180.18806 +0.89683344 +0.41385782
e 0.2828265 Incl. 32.42827 -0.14111819 -0.06708381
P 13.0
From 1119 observations 2011 July 20-2025 Dec. 17, mean residual 0".7.
248P/Gibbs
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Sept. 14.94512 TT Pike
q 2.1577374 (2000.0) P Q
n 0.06727951 Peri. 209.99911 +0.53444888 -0.84362554
a 5.9870677 Node 207.79129 +0.79579555 +0.52282880
e 0.6396003 Incl. 6.35126 +0.28473469 +0.12225378
P 14.6
From 252 observations 1996 Sept. 14-2025 Dec. 18, mean residual 0".7.
261P/Larson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 27.41187 TT Pike
q 2.0141946 (2000.0) P Q
n 0.15124309 Peri. 67.36640 +0.99478338 +0.02561348
a 3.4888772 Node 291.05036 -0.06590136 +0.90022376
e 0.4226812 Incl. 6.07342 +0.07786557 +0.43467360
P 6.52
From 1216 observations 2005 July 3-2025 Dec. 14, mean residual 0".8.
Nongravitational parameters A1 = +0.39, A2 = +0.0860.
276P/Vorobjov
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 11.96693 TT Pike
q 3.8985085 (2000.0) P Q
n 0.07893171 Peri. 199.65511 +0.63883413 -0.75805752
a 5.3823057 Node 211.06412 +0.73552361 +0.65183586
e 0.2756806 Incl. 14.74155 +0.22560134 +0.02141988
P 12.5
From 1197 observations 2000 Dec. 19-2025 Dec. 18, mean residual 0".6.
295P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 22.75512 TT Pike
q 2.0257290 (2000.0) P Q
n 0.08084140 Peri. 73.06139 +0.17431716 -0.98360504
a 5.2972054 Node 7.37801 +0.70954323 +0.09293666
e 0.6175853 Incl. 21.08724 +0.68276052 +0.15454417
P 12.2
From 90 observations 2002 Jan. 6-2025 Dec. 12, mean residual 0".4.
302P/Lemmon-PANSTARRS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 9.29283 TT Pike
q 3.2885995 (2000.0) P Q
n 0.11185756 Peri. 208.60753 +0.86658655 +0.49094556
a 4.2660487 Node 121.71709 -0.43548597 +0.83152087
e 0.2291228 Incl. 6.03565 -0.24367956 +0.25989517
P 8.81
From 830 observations 2007 Aug. 16-2025 Dec. 18, mean residual 0".6.
331P/Gibbs
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 25.34836 TT Pike
q 2.8783955 (2000.0) P Q
n 0.18941773 Peri. 185.75460 +0.73818492 -0.66696227
a 3.0027716 Node 216.74177 +0.62548444 +0.73289441
e 0.0414204 Incl. 9.74105 +0.25268999 +0.13426509
P 5.20
From 191 observations 2004 Aug. 26-2025 Dec. 12, mean residual 0".8.
450P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2027 Feb. 20.87172 TT Pike
q 5.4135609 (2000.0) P Q
n 0.04457669 Peri. 25.65130 -0.85614075 -0.49259550
a 7.8776644 Node 123.95370 +0.43576337 -0.85061320
e 0.3127962 Incl. 10.84830 +0.27772883 -0.18386640
P 22.1
From 647 observations 2003 Oct. 25-2025 Dec. 17, mean residual 0".7.
486P/Leonard
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Apr. 3.81498 TT Pike
q 2.3089451 (2000.0) P Q
n 0.14268638 Peri. 93.93695 +0.68102578 +0.73185690
a 3.6270012 Node 219.02346 -0.68620816 +0.62627411
e 0.3634011 Incl. 2.20969 -0.25558217 +0.26863770
P 6.91
From 544 observations 2018 June 8-2025 Dec. 16, mean residual 0".7.
493P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 14.09696 TT Pike
q 3.8229692 (2000.0) P Q
n 0.05128143 Peri. 83.22276 +0.10077093 -0.99487940
a 7.1751220 Node 1.08842 +0.67216756 +0.06232985
e 0.4671910 Incl. 24.10832 +0.73350937 +0.07956112
P 19.2
From 493 observations 2024 Aug. 2-2025 Dec. 17, mean residual 0".5.
509P/Catalina
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Mar. 19.81818 TT Pike
q 3.6928844 (2000.0) P Q
n 0.05278090 Peri. 180.10002 -0.09249824 -0.98450331
a 7.0385769 Node 275.20845 +0.91365253 -0.02443658
e 0.4753365 Incl. 8.60406 +0.39583219 -0.17365510
P 18.7
From 417 observations 2006 Oct. 19-2025 Dec. 17, mean residual 0".7.
513P/Broughton
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 June 13.77326 TT Pike
q 3.2536473 (2000.0) P Q
n 0.05043364 Peri. 304.86700 +0.95209402 +0.00048262
a 7.2553078 Node 56.99701 +0.17708266 +0.81440698
e 0.5515494 Incl. 21.38562 -0.24931650 +0.58029393
P 19.5
From 201 observations 2005 Aug. 26-2025 Dec. 15, mean residual 0".6.
Orbital elements:
3I/ATLAS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 29.48277 TT Pike
q 1.3564837 (2000.0) P Q
z -3.7889568 Peri. 128.00724 -0.96791181 -0.24579422
+/-0.0000349 Node 322.15485 -0.24887740 +0.90889888
e 6.1396579 Incl. 175.11293 -0.03473862 +0.33687984
From 5376 observations 2025 May 8-Dec. 18, mean residual 0".5.
24P/Schaumasse
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 8.34244 TT Pike
q 1.1839385 (2000.0) P Q
n 0.12054315 Peri. 58.48325 -0.71166617 -0.67484141
a 4.0585823 Node 78.27165 +0.55777392 -0.71174319
e 0.7082877 Incl. 11.50231 +0.42710598 -0.19496334
P 8.18
From 1039 observations 2017 July 24-2025 Dec. 18, mean residual 0".6.
Nongravitational parameters A1 = +0.08, A2 = -0.0101.
29P/Schwassmann-Wachmann
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2019 Apr. 28.33557 TT Pike
q 5.7968680 (2000.0) P Q
n 0.06610678 Peri. 51.91227 +0.98943639 -0.08128323
a 6.0576665 Node 312.40186 +0.01164833 +0.86991934
e 0.0430526 Incl. 9.35523 +0.14449893 +0.48644977
P 14.9
From 17319 observations 2020 Jan. 1-2025 Dec. 18, mean residual 0".6.
Nongravitational parameters A1 = -1.60, A2 = +1.5302.
40P/Vaisala
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 12.01697 TT Pike
q 1.8237774 (2000.0) P Q
n 0.08966756 Peri. 52.05715 -0.98723776 +0.02656237
a 4.9436282 Node 128.90093 -0.06929020 -0.95941683
e 0.6310852 Incl. 11.64036 +0.14338927 -0.28073792
P 11.0
From 78 observations 2024 Nov. 29-2025 Dec. 17, mean residual 0".6.
43P/Wolf-Harrington
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 4.58606 TT Pike
q 2.4427692 (2000.0) P Q
n 0.10935514 Peri. 223.78878 -0.29694658 -0.94371479
a 4.3308843 Node 243.97981 +0.91465653 -0.23728110
e 0.4359653 Incl. 9.33004 +0.27427387 -0.23043454
P 9.01
From 1261 observations 2023 Sept. 11-2025 Dec. 18, mean residual 0".5.
Nongravitational parameters A1 = -2.17, A2 = +0.8156.
47P/Ashbrook-Jackson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Oct. 28.00484 TT Pike
q 2.8074540 (2000.0) P Q
n 0.11800661 Peri. 357.91833 +0.99593422 +0.08924305
a 4.1165352 Node 356.88095 -0.07904723 +0.80041068
e 0.3180056 Incl. 13.03942 -0.04320374 +0.59277181
P 8.35
From 2131 observations 2012 Feb. 15-2025 Dec. 16, mean residual 0".7.
Nongravitational parameters A1 = -0.11, A2 = -0.0157.
48P/Johnson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 2.66236 TT Pike
q 2.0067877 (2000.0) P Q
n 0.15056961 Peri. 216.78783 +0.82454779 +0.52981838
a 3.4992730 Node 110.06357 -0.45560174 +0.82980202
e 0.4265130 Incl. 12.20175 -0.33548173 +0.17527434
P 6.55
From 1483 observations 2018 Feb. 16-2025 Dec. 18, mean residual 0".7.
Nongravitational parameters A1 = +0.49, A2 = +0.0556.
63P/Wild
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 6.16728 TT Pike
q 1.9745656 (2000.0) P Q
n 0.07325194 Peri. 168.73568 -0.97281490 -0.23121367
a 5.6570494 Node 357.76503 +0.17769268 -0.70898539
e 0.6509549 Incl. 19.61602 +0.14851422 -0.66624317
P 13.5
From 2003 observations 1960 Apr. 16-2025 Dec. 18, mean residual 0".6.
Nongravitational parameters A1 = +0.16, A2 = -0.1099.
78P/Gehrels
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 June 25.06701 TT Pike
q 2.0045656 (2000.0) P Q
n 0.13666146 Peri. 192.78014 +0.72871233 -0.68258245
a 3.7328341 Node 210.49724 +0.63751097 +0.70565444
e 0.4629910 Incl. 6.25722 +0.25011619 +0.19008686
P 7.21
From 2773 observations 2018 May 15-2025 Dec. 14, mean residual 0".6.
Nongravitational parameters A1 = -0.78, A2 = -0.2102.
123P/West-Hartley
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 22.09590 TT Pike
q 2.1580277 (2000.0) P Q
n 0.12867527 Peri. 103.92958 -0.83970682 -0.50898858
a 3.8857303 Node 45.88008 +0.33765418 -0.76234814
e 0.4446275 Incl. 15.28672 +0.42530237 -0.39969481
P 7.66
From 3289 observations 2010 Sept. 12-2025 Dec. 18, mean residual 0".7.
Nongravitational parameters A1 = -0.64, A2 = +0.0104.
124P/Mrkos
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 June 23.58862 TT Pike
q 1.7349024 (2000.0) P Q
n 0.15875357 Peri. 185.10915 -0.99608046 +0.08845103
a 3.3779538 Node 359.95941 -0.05063343 -0.57361422
e 0.4864043 Incl. 31.40192 -0.07252570 -0.81433601
P 6.21
From 882 observations 2020 Jan. 1-2025 Dec. 13, mean residual 0".4.
Nongravitational parameters A1 = -0.03, A2 = +0.0082.
128P/Shoemaker-Holt
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 16.92861 TT Pike
q 3.0369655 (2000.0) P Q
n 0.10389891 Peri. 210.53930 +0.42588175 -0.90375831
a 4.4812110 Node 214.30696 +0.84476368 +0.41418918
e 0.3222891 Incl. 4.37147 +0.32403558 +0.10801960
P 9.49
From 1017 observations 1987 Sept. 24-2025 Dec. 15, mean residual 0".9.
131P/Mueller
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Feb. 15.69492 TT Pike
q 2.4078088 (2000.0) P Q
n 0.13995748 Peri. 179.26563 +0.83480369 -0.54583234
a 3.6739957 Node 214.13279 +0.50446213 +0.81067897
e 0.3446348 Incl. 7.36220 +0.22050117 +0.21181753
P 7.04
From 867 observations 1990 Sept. 15-2025 Dec. 12, mean residual 0".8.
Nongravitational parameters A1 = +0.69, A2 = -0.0426.
136P/Mueller
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Jan. 3.72847 TT Pike
q 2.9590662 (2000.0) P Q
n 0.11502943 Peri. 225.38793 +0.99229971 -0.05526351
a 4.1872613 Node 137.41176 +0.08470221 +0.95573884
e 0.2933170 Incl. 9.42755 -0.09037045 +0.28897962
P 8.57
From 489 observations 2016 Aug. 5-2025 Dec. 16, mean residual 0".7.
Nongravitational parameters A1 = -0.38, A2 = +0.0597.
143P/Kowal-Mrkos
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Dec. 27.48895 TT Pike
q 2.9564173 (2000.0) P Q
n 0.09482650 Peri. 304.64400 -0.98972707 +0.11622801
a 4.7626600 Node 242.15929 -0.07944005 -0.93123030
e 0.3792508 Incl. 5.40258 -0.11886803 -0.34540002
P 10.4
From 255 observations 2020 July 28-2025 Dec. 15, mean residual 0".2.
145P/Shoemaker-Levy
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 31.93227 TT Pike
q 1.8897190 (2000.0) P Q
n 0.11745792 Peri. 10.41855 +0.79825743 -0.59584165
a 4.1293451 Node 26.76678 +0.53759285 +0.63887380
e 0.5423684 Incl. 11.27822 +0.27162291 +0.48663435
P 8.39
From 1169 observations 1991 Sept. 12-2025 Dec. 14, mean residual 0".6.
Nongravitational parameters A1 = +0.16, A2 = -0.0178.
164P/Christensen
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 27.37452 TT Pike
q 1.6748679 (2000.0) P Q
n 0.14119600 Peri. 325.93240 +0.56251711 -0.77787837
a 3.6524795 Node 88.26759 +0.80720982 +0.44341569
e 0.5414436 Incl. 16.27635 +0.17884855 +0.44529514
P 6.98
From 1243 observations 2010 Oct. 7-2025 Dec. 17, mean residual 0".7.
175P/Hergenrother
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Sept. 3.07073 TT Pike
q 2.3067600 (2000.0) P Q
n 0.13894194 Peri. 74.58011 -0.99372977 +0.07722926
a 3.6918764 Node 109.79604 -0.10184955 -0.92358990
e 0.3751795 Incl. 4.92941 +0.04612822 -0.37552276
P 7.09
From 855 observations 2000 Jan. 4-2025 Dec. 14, mean residual 0".7.
Nongravitational parameters A1 = +0.07, A2 = +0.0223.
195P/Hill
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Aug. 6.00028 TT Pike
q 4.4406071 (2000.0) P Q
n 0.06029776 Peri. 250.65382 -0.52714506 -0.66476070
a 6.4407328 Node 243.08973 +0.80912283 -0.58301188
e 0.3105432 Incl. 36.41505 -0.25968890 -0.46710852
P 16.3
From 988 observations 1993 Feb. 26-2025 Dec. 16, mean residual 0".6.
210P/Christensen
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Nov. 22.72671 TT Pike
q 0.5244174 (2000.0) P Q
n 0.17541075 Peri. 345.94961 +0.17411168 -0.96846930
a 3.1605688 Node 93.79677 +0.91983817 +0.09535321
e 0.8340750 Incl. 10.28728 +0.35154354 +0.23016294
P 5.62
From 682 observations 2008 Dec. 8-2025 Dec. 16, mean residual 0".7.
Nongravitational parameters A1 = -0.02, A2 = +0.0043.
217P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 May 24.96370 TT Pike
q 1.2263049 (2000.0) P Q
n 0.12570631 Peri. 247.04382 +0.95777348 -0.22292545
a 3.9466747 Node 125.36815 +0.26648811 +0.92538531
e 0.6892815 Incl. 12.86675 -0.10795389 +0.30653918
P 7.84
From 3456 observations 2001 June 21-2025 Dec. 16, mean residual 0".6.
Nongravitational parameters A1 = +0.17, A2 = +0.0032.
233P/La Sagra
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 8.10898 TT Pike
q 1.7767553 (2000.0) P Q
n 0.18709947 Peri. 26.98907 -0.19787720 -0.96182638
a 3.0275245 Node 74.91988 +0.86029682 -0.26283985
e 0.4131327 Incl. 11.29018 +0.46982336 +0.07619199
P 5.27
From 137 observations 2005 Feb. 9-2025 Dec. 15, mean residual 0".6.
235P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 22.66732 TT Pike
q 1.9779167 (2000.0) P Q
n 0.15409891 Peri. 352.19424 -0.97612009 +0.20913118
a 3.4456382 Node 200.17022 -0.18896364 -0.95088497
e 0.4259651 Incl. 9.81321 -0.10715555 -0.22821465
P 6.40
From 74 observations 2024 Nov. 21-2025 Dec. 14, mean residual 0".6.
240P/NEAT
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.94587 TT Pike
q 2.1216543 (2000.0) P Q
n 0.12991381 Peri. 352.07604 +0.37985477 -0.84086058
a 3.8609943 Node 74.91167 +0.86910737 +0.18166010
e 0.4504902 Incl. 23.53670 +0.31680079 +0.50985595
P 7.59
From 1353 observations 2020 Mar. 23-2025 Dec. 17, mean residual 0".5.
Nongravitational parameters A1 = +0.00, A2 = +0.6389.
240P/NEAT B
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 19.94002 TT Pike
q 2.1215561 (2000.0) P Q
n 0.12997045 Peri. 352.05403 +0.38014593 -0.84075903
a 3.8598725 Node 74.91390 +0.86904612 +0.18199968
e 0.4503559 Incl. 23.53219 +0.31661949 +0.50990231
P 7.58
From 496 observations 2025 Oct. 16-Dec. 13, mean residual 0".5.
242P/Spahr
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 23.54497 TT Pike
q 3.9719304 (2000.0) P Q
n 0.07562022 Peri. 245.05361 +0.41925581 -0.90786644
a 5.5383121 Node 180.18806 +0.89683344 +0.41385782
e 0.2828265 Incl. 32.42827 -0.14111819 -0.06708381
P 13.0
From 1119 observations 2011 July 20-2025 Dec. 17, mean residual 0".7.
248P/Gibbs
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Sept. 14.94512 TT Pike
q 2.1577374 (2000.0) P Q
n 0.06727951 Peri. 209.99911 +0.53444888 -0.84362554
a 5.9870677 Node 207.79129 +0.79579555 +0.52282880
e 0.6396003 Incl. 6.35126 +0.28473469 +0.12225378
P 14.6
From 252 observations 1996 Sept. 14-2025 Dec. 18, mean residual 0".7.
261P/Larson
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 27.41187 TT Pike
q 2.0141946 (2000.0) P Q
n 0.15124309 Peri. 67.36640 +0.99478338 +0.02561348
a 3.4888772 Node 291.05036 -0.06590136 +0.90022376
e 0.4226812 Incl. 6.07342 +0.07786557 +0.43467360
P 6.52
From 1216 observations 2005 July 3-2025 Dec. 14, mean residual 0".8.
Nongravitational parameters A1 = +0.39, A2 = +0.0860.
276P/Vorobjov
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2024 Dec. 11.96693 TT Pike
q 3.8985085 (2000.0) P Q
n 0.07893171 Peri. 199.65511 +0.63883413 -0.75805752
a 5.3823057 Node 211.06412 +0.73552361 +0.65183586
e 0.2756806 Incl. 14.74155 +0.22560134 +0.02141988
P 12.5
From 1197 observations 2000 Dec. 19-2025 Dec. 18, mean residual 0".6.
295P/LINEAR
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 July 22.75512 TT Pike
q 2.0257290 (2000.0) P Q
n 0.08084140 Peri. 73.06139 +0.17431716 -0.98360504
a 5.2972054 Node 7.37801 +0.70954323 +0.09293666
e 0.6175853 Incl. 21.08724 +0.68276052 +0.15454417
P 12.2
From 90 observations 2002 Jan. 6-2025 Dec. 12, mean residual 0".4.
302P/Lemmon-PANSTARRS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Mar. 9.29283 TT Pike
q 3.2885995 (2000.0) P Q
n 0.11185756 Peri. 208.60753 +0.86658655 +0.49094556
a 4.2660487 Node 121.71709 -0.43548597 +0.83152087
e 0.2291228 Incl. 6.03565 -0.24367956 +0.25989517
P 8.81
From 830 observations 2007 Aug. 16-2025 Dec. 18, mean residual 0".6.
331P/Gibbs
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Dec. 25.34836 TT Pike
q 2.8783955 (2000.0) P Q
n 0.18941773 Peri. 185.75460 +0.73818492 -0.66696227
a 3.0027716 Node 216.74177 +0.62548444 +0.73289441
e 0.0414204 Incl. 9.74105 +0.25268999 +0.13426509
P 5.20
From 191 observations 2004 Aug. 26-2025 Dec. 12, mean residual 0".8.
450P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2027 Feb. 20.87172 TT Pike
q 5.4135609 (2000.0) P Q
n 0.04457669 Peri. 25.65130 -0.85614075 -0.49259550
a 7.8776644 Node 123.95370 +0.43576337 -0.85061320
e 0.3127962 Incl. 10.84830 +0.27772883 -0.18386640
P 22.1
From 647 observations 2003 Oct. 25-2025 Dec. 17, mean residual 0".7.
486P/Leonard
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 Apr. 3.81498 TT Pike
q 2.3089451 (2000.0) P Q
n 0.14268638 Peri. 93.93695 +0.68102578 +0.73185690
a 3.6270012 Node 219.02346 -0.68620816 +0.62627411
e 0.3634011 Incl. 2.20969 -0.25558217 +0.26863770
P 6.91
From 544 observations 2018 June 8-2025 Dec. 16, mean residual 0".7.
493P/LONEOS
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Jan. 14.09696 TT Pike
q 3.8229692 (2000.0) P Q
n 0.05128143 Peri. 83.22276 +0.10077093 -0.99487940
a 7.1751220 Node 1.08842 +0.67216756 +0.06232985
e 0.4671910 Incl. 24.10832 +0.73350937 +0.07956112
P 19.2
From 493 observations 2024 Aug. 2-2025 Dec. 17, mean residual 0".5.
509P/Catalina
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2026 Mar. 19.81818 TT Pike
q 3.6928844 (2000.0) P Q
n 0.05278090 Peri. 180.10002 -0.09249824 -0.98450331
a 7.0385769 Node 275.20845 +0.91365253 -0.02443658
e 0.4753365 Incl. 8.60406 +0.39583219 -0.17365510
P 18.7
From 417 observations 2006 Oct. 19-2025 Dec. 17, mean residual 0".7.
513P/Broughton
Epoch 2025 Nov. 21.0 TT = JDT 2461000.5
T 2025 June 13.77326 TT Pike
q 3.2536473 (2000.0) P Q
n 0.05043364 Peri. 304.86700 +0.95209402 +0.00048262
a 7.2553078 Node 56.99701 +0.17708266 +0.81440698
e 0.5515494 Incl. 21.38562 -0.24931650 +0.58029393
P 19.5
From 201 observations 2005 Aug. 26-2025 Dec. 15, mean residual 0".6.