Коррекция орбиты некоторых периодических комет от 20 февраля ..
Добавлено: 21 фев 2025 08:00Коррекция орбиты некоторых периодических комет от 20 февраля 2025 года, MPEC 2025-D44
Orbital elements:
10P/Tempel
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2026 Aug. 2.15781 TT Pike
q 1.4173611 (2000.0) P Q
n 0.18378925 Peri. 195.49500 +0.68058010 +0.70910807
a 3.0637688 Node 117.80102 -0.64812767 +0.70000344
e 0.5373799 Incl. 12.02742 -0.34167419 +0.08462226
P 5.36
From 4592 observations 2003 Mar. 7-2025 Feb. 18, mean residual 0".6.
Nongravitational parameters A1 = +0.02, A2 = +0.0006.
12P/Pons-Brooks
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Apr. 21.13732 TT Pike
q 0.7810654 (2000.0) P Q
n 0.01378751 Peri. 199.00482 +0.14500112 -0.32936004
a 17.2244526 Node 255.85642 +0.98570050 +0.12989871
e 0.9546537 Incl. 74.19010 +0.08584408 -0.93522633
P 71.5
From 4376 observations 2023 Oct. 1-2025 Feb. 9, mean residual 0".6.
Nongravitational parameters A1 = +0.72, A2 = -0.2249.
13P/Olbers
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 June 30.07099 TT Pike
q 1.1754661 (2000.0) P Q
n 0.01418364 Peri. 64.42199 -0.60856330 -0.37158204
a 16.9022360 Node 85.84669 +0.18547893 -0.92571571
e 0.9304550 Incl. 44.66594 +0.77152335 -0.07054930
P 69.5
From 2133 observations 2023 Oct. 8-2025 Feb. 14, mean residual 0".5.
Nongravitational parameters A1 = +0.65, A2 = -0.0940.
29P/Schwassmann-Wachmann
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2019 May 2.67316 TT Pike
q 5.7941953 (2000.0) P Q
n 0.06612305 Peri. 52.12697 +0.98912071 -0.08503138
a 6.0566733 Node 312.40418 +0.01493966 +0.86986245
e 0.0433370 Incl. 9.35598 +0.14634559 +0.48591046
P 14.9
From 14989 observations 2020 Jan. 1-2025 Feb. 20, mean residual 0".6.
Nongravitational parameters A1 = -1.49, A2 = +2.6734.
30P/Reinmuth
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Aug. 17.22435 TT Pike
q 1.8138464 (2000.0) P Q
n 0.13653302 Peri. 9.51013 -0.59678908 -0.79267060
a 3.7351747 Node 117.23366 +0.72667240 -0.59974892
e 0.5143878 Incl. 8.05325 +0.34027933 -0.10942825
P 7.22
From 1176 observations 2011 Apr. 12-2025 Feb. 8, mean residual 0".8.
32P/Comas Sola
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Apr. 20.67949 TT Pike
q 2.0250740 (2000.0) P Q
n 0.10142243 Peri. 54.70264 -0.31950002 -0.93714103
a 4.5538638 Node 54.53205 +0.80383966 -0.34644947
e 0.5553064 Incl. 9.92016 +0.50175845 -0.04170684
P 9.72
From 3610 observations 2013 Sept. 24-2025 Feb. 6, mean residual 0".8.
Nongravitational parameters A1 = +1.33, A2 = +0.0245.
33P/Daniel
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Nov. 10.90084 TT Pike
q 2.2425033 (2000.0) P Q
n 0.11906254 Peri. 20.25967 +0.08404278 -0.93397518
a 4.0921602 Node 66.28071 +0.85400388 -0.11208041
e 0.4520001 Incl. 22.29403 +0.51343372 +0.33930568
P 8.28
From 754 observations 1999 Nov. 13-2025 Feb. 19, mean residual 0".8.
Nongravitational parameters A1 = +0.54, A2 = +0.0466.
37P/Forbes
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Oct. 11.23800 TT Pike
q 1.6177975 (2000.0) P Q
n 0.15301970 Peri. 330.05963 +0.25654536 +0.96015546
a 3.4618200 Node 314.54910 -0.85303284 +0.17100526
e 0.5326743 Incl. 8.94783 -0.45444411 +0.22104001
P 6.44
From 1747 observations 2011 Feb. 8-2025 Jan. 5, mean residual 0".7.
Nongravitational parameters A1 = +0.55, A2 = -0.0499.
43P/Wolf-Harrington
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Aug. 4.74992 TT Pike
q 2.4428753 (2000.0) P Q
n 0.10928749 Peri. 223.81847 -0.29768695 -0.94347231
a 4.3326713 Node 243.99528 +0.91447006 -0.23797801
e 0.4361734 Incl. 9.33264 +0.27409304 -0.23070863
P 9.02
From 1034 observations 2023 Sept. 11-2025 Feb. 18, mean residual 0".5.
Nongravitational parameters A1 = +1.80, A2 = +1.0371.
49P/Arend-Rigaux
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Apr. 10.61234 TT Pike
q 1.4313490 (2000.0) P Q
n 0.14612106 Peri. 332.93084 -0.05191091 -0.95676828
a 3.5699393 Node 118.79106 +0.96515465 -0.12166355
e 0.5990551 Incl. 19.05942 +0.25647956 +0.26418258
P 6.75
From 4183 observations 2004 June 24-2025 Feb. 18, mean residual 0".6.
Nongravitational parameters A1 = -0.02, A2 = -0.0006.
50P/Arend
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 May 12.64363 TT Pike
q 1.9219583 (2000.0) P Q
n 0.11929353 Peri. 49.31606 +0.71019147 -0.70346369
a 4.0868759 Node 355.14517 +0.50576024 +0.53717078
e 0.5297243 Incl. 19.10024 +0.48972917 +0.46538843
P 8.26
From 1830 observations 1999 Aug. 3-2025 Feb. 17, mean residual 0".7.
Nongravitational parameters A1 = +0.23, A2 = -0.0102.
65P/Gunn
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 June 16.49265 TT Pike
q 2.9262492 (2000.0) P Q
n 0.12836270 Peri. 213.67812 +0.09226203 +0.98573525
a 3.8920357 Node 61.97614 -0.87478675 +0.14776819
e 0.2481443 Incl. 9.17540 -0.47564257 -0.08056410
P 7.68
From 2950 observations 2013 Jan. 1-2025 Feb. 20, mean residual 0".6.
Nongravitational parameters A1 = -0.14, A2 = -0.0217.
88P/Howell
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2026 Mar. 18.79616 TT Pike
q 1.3576747 (2000.0) P Q
n 0.17984850 Peri. 235.88241 +0.38149046 +0.92216585
a 3.1083614 Node 56.66901 -0.82094615 +0.36973906
e 0.5632185 Incl. 4.38195 -0.42486757 +0.11359213
P 5.48
From 2491 observations 2015 July 7-2025 Feb. 20, mean residual 0".8.
Nongravitational parameters A1 = +0.67, A2 = +0.0117.
96P/Machholz
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2023 Jan. 31.30122 TT Pike
q 0.1160914 (2000.0) P Q
n 0.18677292 Peri. 14.73688 -0.20286245 -0.49958854
a 3.0310523 Node 93.96250 +0.79111328 -0.59045339
e 0.9616993 Incl. 57.58554 +0.57704991 +0.63385810
P 5.28
From 255 observations 2022 June 11-2024 July 14, mean residual 0".5.
Nongravitational parameters A1 = -0.24, A2 = +0.0041.
130P/McNaught-Hughes
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Apr. 15.18094 TT Pike
q 1.8245099 (2000.0) P Q
n 0.15817492 Peri. 246.26362 +0.71989758 +0.68693431
a 3.3861872 Node 70.18131 -0.59214998 +0.68251833
e 0.4611905 Incl. 6.06150 -0.36208545 +0.24957960
P 6.23
From 2241 observations 2004 Apr. 20-2025 Feb. 17, mean residual 0".6.
Nongravitational parameters A1 = -0.02, A2 = +0.0007.
154P/Brewington
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 June 13.22374 TT Pike
q 1.5525494 (2000.0) P Q
n 0.09383322 Peri. 47.93555 +0.84757308 -0.52322941
a 4.7962113 Node 342.99641 +0.35150913 +0.67861760
e 0.6762967 Incl. 17.63752 +0.39756912 +0.51546983
P 10.5
From 2832 observations 2013 July 6-2025 Feb. 20, mean residual 0".7.
Nongravitational parameters A1 = +1.53, A2 = +0.3758.
195P/Hill
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Aug. 5.50110 TT Pike
q 4.4406023 (2000.0) P Q
n 0.06022674 Peri. 250.58478 -0.52644625 -0.66524888
a 6.4457951 Node 243.10080 +0.80973436 -0.58215341
e 0.3110854 Incl. 36.41746 -0.25919994 -0.46748405
P 16.4
From 832 observations 1993 Feb. 26-2025 Feb. 20, mean residual 0".6.
242P/Spahr
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Dec. 23.32518 TT Pike
q 3.9716509 (2000.0) P Q
n 0.07563053 Peri. 244.96159 +0.41976854 -0.90762796
a 5.5378087 Node 180.25868 +0.89665449 +0.41427694
e 0.2828118 Incl. 32.42355 -0.14073060 -0.06772082
P 13.0
From 1030 observations 2011 July 20-2025 Feb. 20, mean residual 0".7.
250P/Larson
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 May 16.74390 TT Pike
q 2.2723282 (2000.0) P Q
n 0.13424061 Peri. 45.70928 -0.46702750 -0.85696236
a 3.7775779 Node 73.30400 +0.73260804 -0.51302129
e 0.3984695 Incl. 13.15224 +0.49514723 -0.04924085
P 7.34
From 528 observations 1995 Dec. 22-2025 Feb. 16, mean residual 0".6.
268P/Bernardi
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Dec. 18.45267 TT Pike
q 2.4126598 (2000.0) P Q
n 0.10018455 Peri. 0.00717 -0.58268586 -0.78251800
a 4.5912988 Node 125.63277 +0.74562192 -0.62214548
e 0.4745148 Incl. 15.66188 +0.32330349 +0.02450680
P 9.84
From 98 observations 2024 Nov. 8-2025 Feb. 20, mean residual 0".3.
Nongravitational parameters A1 = +3.93, A2 = -0.8580.
276P/Vorobjov
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Dec. 10.90785 TT Pike
q 3.8986514 (2000.0) P Q
n 0.07935015 Peri. 199.32273 +0.64023228 -0.75666621
a 5.3633675 Node 211.29103 +0.73410385 +0.65346717
e 0.2730964 Incl. 14.78119 +0.22626127 +0.02090223
P 12.4
From 1132 observations 2000 Dec. 19-2025 Feb. 20, mean residual 0".6.
305P/Skiff
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Nov. 17.14279 TT Pike
q 1.4184175 (2000.0) P Q
n 0.09871398 Peri. 147.40914 +0.87726850 -0.44681766
a 4.6367848 Node 240.10182 +0.38555247 +0.87356533
e 0.6940946 Incl. 11.67093 +0.28591830 +0.19297045
P 9.98
From 740 observations 2004 Oct. 7-2025 Feb. 14, mean residual 1".1.
323P/SOHO
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Mar. 14.20597 TT Pike
q 0.0402871 (2000.0) P Q
n 0.25491823 Peri. 353.29031 +0.73515750 +0.67577613
a 2.4634029 Node 324.00606 -0.61764436 +0.63515016
e 0.9836457 Incl. 5.23018 -0.27939021 +0.37404666
P 3.87
From 28 observations 2025 Jan. 27-Feb. 8, mean residual 0".3.
333P/LINEAR
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Nov. 29.29816 TT Pike
q 1.1129751 (2000.0) P Q
n 0.11367848 Peri. 26.01968 -0.12520559 +0.73231414
a 4.2203702 Node 115.70684 +0.73012385 -0.38878817
e 0.7362850 Incl. 132.02230 +0.67174602 +0.55907044
P 8.67
From 1168 observations 2016 Jan. 1-2025 Feb. 14, mean residual 0".6.
404P/Bressi
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2023 Oct. 31.99033 TT Pike
q 4.1325450 (2000.0) P Q
n 0.09614659 Peri. 169.01556 +0.35468909 -0.91981866
a 4.7189654 Node 260.04200 +0.84440829 +0.39215473
e 0.1242689 Incl. 9.80429 +0.40146019 -0.01217820
P 10.3
From 476 observations 2020 Nov. 8-2025 Feb. 18, mean residual 0".6.
450P/LONEOS
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2027 Jan. 29.45599 TT Pike
q 5.4486748 (2000.0) P Q
n 0.04400871 Peri. 23.14755 -0.83776362 -0.52426983
a 7.9452997 Node 124.34879 +0.46761394 -0.83317370
e 0.3142266 Incl. 10.65279 +0.28193849 -0.17596233
P 22.4
From 603 observations 2003 Oct. 25-2025 Feb. 17, mean residual 0".7.
472P/NEAT-LINEAR
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 July 14.31315 TT Pike
q 3.3878203 (2000.0) P Q
n 0.04536298 Peri. 218.85275 +0.43195663 -0.89816603
a 7.7863691 Node 205.86436 +0.86724277 +0.43857975
e 0.5649037 Incl. 10.82388 +0.24759533 +0.03075039
P 21.7
From 1202 observations 2002 Sept. 15-2025 Feb. 20, mean residual 0".7.
487P/Siding Spring
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Oct. 20.60627 TT Pike
q 1.8147972 (2000.0) P Q
n 0.08401011 Peri. 0.84718 +0.64462380 -0.59488276
a 5.1631533 Node 49.20542 +0.69763179 +0.20083581
e 0.6485099 Incl. 39.36620 +0.31268200 +0.77831837
P 11.7
From 1302 observations 2002 Feb. 13-2025 Feb. 19, mean residual 0".6.
492P/LINEAR
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 July 20.45982 TT Pike
q 1.7819971 (2000.0) P Q
n 0.07128412 Peri. 40.98642 +0.61416761 -0.78822352
a 5.7606855 Node 11.30609 +0.66264547 +0.48840499
e 0.6906623 Incl. 11.40083 +0.42860137 +0.37438517
P 13.8
From 794 observations 2010 Aug. 10-2025 Feb. 20, mean residual 0".7.
496P/Hill
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Mar. 10.27854 TT Pike
q 1.6210430 (2000.0) P Q
n 0.06541706 Peri. 42.24559 -0.25280961 -0.94002518
a 6.1001715 Node 63.58684 +0.80517630 -0.33564588
e 0.7342627 Incl. 14.81443 +0.53644985 +0.06078240
P 15.1
From 1081 observations 2009 Oct. 14-2025 Feb. 19, mean residual 0".5.
Orbital elements:
10P/Tempel
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2026 Aug. 2.15781 TT Pike
q 1.4173611 (2000.0) P Q
n 0.18378925 Peri. 195.49500 +0.68058010 +0.70910807
a 3.0637688 Node 117.80102 -0.64812767 +0.70000344
e 0.5373799 Incl. 12.02742 -0.34167419 +0.08462226
P 5.36
From 4592 observations 2003 Mar. 7-2025 Feb. 18, mean residual 0".6.
Nongravitational parameters A1 = +0.02, A2 = +0.0006.
12P/Pons-Brooks
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Apr. 21.13732 TT Pike
q 0.7810654 (2000.0) P Q
n 0.01378751 Peri. 199.00482 +0.14500112 -0.32936004
a 17.2244526 Node 255.85642 +0.98570050 +0.12989871
e 0.9546537 Incl. 74.19010 +0.08584408 -0.93522633
P 71.5
From 4376 observations 2023 Oct. 1-2025 Feb. 9, mean residual 0".6.
Nongravitational parameters A1 = +0.72, A2 = -0.2249.
13P/Olbers
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 June 30.07099 TT Pike
q 1.1754661 (2000.0) P Q
n 0.01418364 Peri. 64.42199 -0.60856330 -0.37158204
a 16.9022360 Node 85.84669 +0.18547893 -0.92571571
e 0.9304550 Incl. 44.66594 +0.77152335 -0.07054930
P 69.5
From 2133 observations 2023 Oct. 8-2025 Feb. 14, mean residual 0".5.
Nongravitational parameters A1 = +0.65, A2 = -0.0940.
29P/Schwassmann-Wachmann
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2019 May 2.67316 TT Pike
q 5.7941953 (2000.0) P Q
n 0.06612305 Peri. 52.12697 +0.98912071 -0.08503138
a 6.0566733 Node 312.40418 +0.01493966 +0.86986245
e 0.0433370 Incl. 9.35598 +0.14634559 +0.48591046
P 14.9
From 14989 observations 2020 Jan. 1-2025 Feb. 20, mean residual 0".6.
Nongravitational parameters A1 = -1.49, A2 = +2.6734.
30P/Reinmuth
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Aug. 17.22435 TT Pike
q 1.8138464 (2000.0) P Q
n 0.13653302 Peri. 9.51013 -0.59678908 -0.79267060
a 3.7351747 Node 117.23366 +0.72667240 -0.59974892
e 0.5143878 Incl. 8.05325 +0.34027933 -0.10942825
P 7.22
From 1176 observations 2011 Apr. 12-2025 Feb. 8, mean residual 0".8.
32P/Comas Sola
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Apr. 20.67949 TT Pike
q 2.0250740 (2000.0) P Q
n 0.10142243 Peri. 54.70264 -0.31950002 -0.93714103
a 4.5538638 Node 54.53205 +0.80383966 -0.34644947
e 0.5553064 Incl. 9.92016 +0.50175845 -0.04170684
P 9.72
From 3610 observations 2013 Sept. 24-2025 Feb. 6, mean residual 0".8.
Nongravitational parameters A1 = +1.33, A2 = +0.0245.
33P/Daniel
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Nov. 10.90084 TT Pike
q 2.2425033 (2000.0) P Q
n 0.11906254 Peri. 20.25967 +0.08404278 -0.93397518
a 4.0921602 Node 66.28071 +0.85400388 -0.11208041
e 0.4520001 Incl. 22.29403 +0.51343372 +0.33930568
P 8.28
From 754 observations 1999 Nov. 13-2025 Feb. 19, mean residual 0".8.
Nongravitational parameters A1 = +0.54, A2 = +0.0466.
37P/Forbes
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Oct. 11.23800 TT Pike
q 1.6177975 (2000.0) P Q
n 0.15301970 Peri. 330.05963 +0.25654536 +0.96015546
a 3.4618200 Node 314.54910 -0.85303284 +0.17100526
e 0.5326743 Incl. 8.94783 -0.45444411 +0.22104001
P 6.44
From 1747 observations 2011 Feb. 8-2025 Jan. 5, mean residual 0".7.
Nongravitational parameters A1 = +0.55, A2 = -0.0499.
43P/Wolf-Harrington
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Aug. 4.74992 TT Pike
q 2.4428753 (2000.0) P Q
n 0.10928749 Peri. 223.81847 -0.29768695 -0.94347231
a 4.3326713 Node 243.99528 +0.91447006 -0.23797801
e 0.4361734 Incl. 9.33264 +0.27409304 -0.23070863
P 9.02
From 1034 observations 2023 Sept. 11-2025 Feb. 18, mean residual 0".5.
Nongravitational parameters A1 = +1.80, A2 = +1.0371.
49P/Arend-Rigaux
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Apr. 10.61234 TT Pike
q 1.4313490 (2000.0) P Q
n 0.14612106 Peri. 332.93084 -0.05191091 -0.95676828
a 3.5699393 Node 118.79106 +0.96515465 -0.12166355
e 0.5990551 Incl. 19.05942 +0.25647956 +0.26418258
P 6.75
From 4183 observations 2004 June 24-2025 Feb. 18, mean residual 0".6.
Nongravitational parameters A1 = -0.02, A2 = -0.0006.
50P/Arend
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 May 12.64363 TT Pike
q 1.9219583 (2000.0) P Q
n 0.11929353 Peri. 49.31606 +0.71019147 -0.70346369
a 4.0868759 Node 355.14517 +0.50576024 +0.53717078
e 0.5297243 Incl. 19.10024 +0.48972917 +0.46538843
P 8.26
From 1830 observations 1999 Aug. 3-2025 Feb. 17, mean residual 0".7.
Nongravitational parameters A1 = +0.23, A2 = -0.0102.
65P/Gunn
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 June 16.49265 TT Pike
q 2.9262492 (2000.0) P Q
n 0.12836270 Peri. 213.67812 +0.09226203 +0.98573525
a 3.8920357 Node 61.97614 -0.87478675 +0.14776819
e 0.2481443 Incl. 9.17540 -0.47564257 -0.08056410
P 7.68
From 2950 observations 2013 Jan. 1-2025 Feb. 20, mean residual 0".6.
Nongravitational parameters A1 = -0.14, A2 = -0.0217.
88P/Howell
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2026 Mar. 18.79616 TT Pike
q 1.3576747 (2000.0) P Q
n 0.17984850 Peri. 235.88241 +0.38149046 +0.92216585
a 3.1083614 Node 56.66901 -0.82094615 +0.36973906
e 0.5632185 Incl. 4.38195 -0.42486757 +0.11359213
P 5.48
From 2491 observations 2015 July 7-2025 Feb. 20, mean residual 0".8.
Nongravitational parameters A1 = +0.67, A2 = +0.0117.
96P/Machholz
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2023 Jan. 31.30122 TT Pike
q 0.1160914 (2000.0) P Q
n 0.18677292 Peri. 14.73688 -0.20286245 -0.49958854
a 3.0310523 Node 93.96250 +0.79111328 -0.59045339
e 0.9616993 Incl. 57.58554 +0.57704991 +0.63385810
P 5.28
From 255 observations 2022 June 11-2024 July 14, mean residual 0".5.
Nongravitational parameters A1 = -0.24, A2 = +0.0041.
130P/McNaught-Hughes
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Apr. 15.18094 TT Pike
q 1.8245099 (2000.0) P Q
n 0.15817492 Peri. 246.26362 +0.71989758 +0.68693431
a 3.3861872 Node 70.18131 -0.59214998 +0.68251833
e 0.4611905 Incl. 6.06150 -0.36208545 +0.24957960
P 6.23
From 2241 observations 2004 Apr. 20-2025 Feb. 17, mean residual 0".6.
Nongravitational parameters A1 = -0.02, A2 = +0.0007.
154P/Brewington
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 June 13.22374 TT Pike
q 1.5525494 (2000.0) P Q
n 0.09383322 Peri. 47.93555 +0.84757308 -0.52322941
a 4.7962113 Node 342.99641 +0.35150913 +0.67861760
e 0.6762967 Incl. 17.63752 +0.39756912 +0.51546983
P 10.5
From 2832 observations 2013 July 6-2025 Feb. 20, mean residual 0".7.
Nongravitational parameters A1 = +1.53, A2 = +0.3758.
195P/Hill
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Aug. 5.50110 TT Pike
q 4.4406023 (2000.0) P Q
n 0.06022674 Peri. 250.58478 -0.52644625 -0.66524888
a 6.4457951 Node 243.10080 +0.80973436 -0.58215341
e 0.3110854 Incl. 36.41746 -0.25919994 -0.46748405
P 16.4
From 832 observations 1993 Feb. 26-2025 Feb. 20, mean residual 0".6.
242P/Spahr
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Dec. 23.32518 TT Pike
q 3.9716509 (2000.0) P Q
n 0.07563053 Peri. 244.96159 +0.41976854 -0.90762796
a 5.5378087 Node 180.25868 +0.89665449 +0.41427694
e 0.2828118 Incl. 32.42355 -0.14073060 -0.06772082
P 13.0
From 1030 observations 2011 July 20-2025 Feb. 20, mean residual 0".7.
250P/Larson
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 May 16.74390 TT Pike
q 2.2723282 (2000.0) P Q
n 0.13424061 Peri. 45.70928 -0.46702750 -0.85696236
a 3.7775779 Node 73.30400 +0.73260804 -0.51302129
e 0.3984695 Incl. 13.15224 +0.49514723 -0.04924085
P 7.34
From 528 observations 1995 Dec. 22-2025 Feb. 16, mean residual 0".6.
268P/Bernardi
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Dec. 18.45267 TT Pike
q 2.4126598 (2000.0) P Q
n 0.10018455 Peri. 0.00717 -0.58268586 -0.78251800
a 4.5912988 Node 125.63277 +0.74562192 -0.62214548
e 0.4745148 Incl. 15.66188 +0.32330349 +0.02450680
P 9.84
From 98 observations 2024 Nov. 8-2025 Feb. 20, mean residual 0".3.
Nongravitational parameters A1 = +3.93, A2 = -0.8580.
276P/Vorobjov
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Dec. 10.90785 TT Pike
q 3.8986514 (2000.0) P Q
n 0.07935015 Peri. 199.32273 +0.64023228 -0.75666621
a 5.3633675 Node 211.29103 +0.73410385 +0.65346717
e 0.2730964 Incl. 14.78119 +0.22626127 +0.02090223
P 12.4
From 1132 observations 2000 Dec. 19-2025 Feb. 20, mean residual 0".6.
305P/Skiff
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Nov. 17.14279 TT Pike
q 1.4184175 (2000.0) P Q
n 0.09871398 Peri. 147.40914 +0.87726850 -0.44681766
a 4.6367848 Node 240.10182 +0.38555247 +0.87356533
e 0.6940946 Incl. 11.67093 +0.28591830 +0.19297045
P 9.98
From 740 observations 2004 Oct. 7-2025 Feb. 14, mean residual 1".1.
323P/SOHO
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Mar. 14.20597 TT Pike
q 0.0402871 (2000.0) P Q
n 0.25491823 Peri. 353.29031 +0.73515750 +0.67577613
a 2.4634029 Node 324.00606 -0.61764436 +0.63515016
e 0.9836457 Incl. 5.23018 -0.27939021 +0.37404666
P 3.87
From 28 observations 2025 Jan. 27-Feb. 8, mean residual 0".3.
333P/LINEAR
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Nov. 29.29816 TT Pike
q 1.1129751 (2000.0) P Q
n 0.11367848 Peri. 26.01968 -0.12520559 +0.73231414
a 4.2203702 Node 115.70684 +0.73012385 -0.38878817
e 0.7362850 Incl. 132.02230 +0.67174602 +0.55907044
P 8.67
From 1168 observations 2016 Jan. 1-2025 Feb. 14, mean residual 0".6.
404P/Bressi
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2023 Oct. 31.99033 TT Pike
q 4.1325450 (2000.0) P Q
n 0.09614659 Peri. 169.01556 +0.35468909 -0.91981866
a 4.7189654 Node 260.04200 +0.84440829 +0.39215473
e 0.1242689 Incl. 9.80429 +0.40146019 -0.01217820
P 10.3
From 476 observations 2020 Nov. 8-2025 Feb. 18, mean residual 0".6.
450P/LONEOS
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2027 Jan. 29.45599 TT Pike
q 5.4486748 (2000.0) P Q
n 0.04400871 Peri. 23.14755 -0.83776362 -0.52426983
a 7.9452997 Node 124.34879 +0.46761394 -0.83317370
e 0.3142266 Incl. 10.65279 +0.28193849 -0.17596233
P 22.4
From 603 observations 2003 Oct. 25-2025 Feb. 17, mean residual 0".7.
472P/NEAT-LINEAR
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 July 14.31315 TT Pike
q 3.3878203 (2000.0) P Q
n 0.04536298 Peri. 218.85275 +0.43195663 -0.89816603
a 7.7863691 Node 205.86436 +0.86724277 +0.43857975
e 0.5649037 Incl. 10.82388 +0.24759533 +0.03075039
P 21.7
From 1202 observations 2002 Sept. 15-2025 Feb. 20, mean residual 0".7.
487P/Siding Spring
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 Oct. 20.60627 TT Pike
q 1.8147972 (2000.0) P Q
n 0.08401011 Peri. 0.84718 +0.64462380 -0.59488276
a 5.1631533 Node 49.20542 +0.69763179 +0.20083581
e 0.6485099 Incl. 39.36620 +0.31268200 +0.77831837
P 11.7
From 1302 observations 2002 Feb. 13-2025 Feb. 19, mean residual 0".6.
492P/LINEAR
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2024 July 20.45982 TT Pike
q 1.7819971 (2000.0) P Q
n 0.07128412 Peri. 40.98642 +0.61416761 -0.78822352
a 5.7606855 Node 11.30609 +0.66264547 +0.48840499
e 0.6906623 Incl. 11.40083 +0.42860137 +0.37438517
P 13.8
From 794 observations 2010 Aug. 10-2025 Feb. 20, mean residual 0".7.
496P/Hill
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Mar. 10.27854 TT Pike
q 1.6210430 (2000.0) P Q
n 0.06541706 Peri. 42.24559 -0.25280961 -0.94002518
a 6.1001715 Node 63.58684 +0.80517630 -0.33564588
e 0.7342627 Incl. 14.81443 +0.53644985 +0.06078240
P 15.1
From 1081 observations 2009 Oct. 14-2025 Feb. 19, mean residual 0".5.