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26P/Grigg-Skjellerup
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000034
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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:
Orbital Elements at Epoch 2454326.5 (2007-Aug-14.0) TDB
Reference: JPL K1810/3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6330527671345312 5.5993e-08  
a 3.043315833693677 4.8306e-08 au
q 1.116736323909562 1.7588e-07 au
i 22.35649066304651 1.0161e-05 deg
node 211.710319637668 2.9596e-05 deg
peri 1.704070781269587 2.5765e-05 deg
M 318.6607259499996 4.4847e-06 deg
tp 2454549.179024563690
(2008-Mar-23.67902456)
2.4166e-05 TDB
period 1939.183758910921
5.31
4.617e-05
1.264e-07
d
yr
n .185645119161983 4.4201e-09 deg/d
Q 4.969895343477792 7.8886e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.607514810981455E-10 1.934E-11
A2 [EST] -1.042381945690657E-11 2.227E-13
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      19278 days (52.78 yr)  
   first obs. used      1966-12-19  
   last obs. used      2019-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .74833  
   source      ORB  
   producer      Javier Roa  
   solution date      2019-Oct-10 09:54:25  

Additional Information
 Earth MOID = .110412 au 
 Jupiter MOID = .00221554 au 
 T_jup = 2.805 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 15.1   1. K1810/3 from 130 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 14.   n/a K1810/3 autocmod 2.8
comet nuclear magnitude M2 18.1   01. K1810/3 from 280 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a K1810/3 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a K1810/3 autocmod 2.8
diameter diameter 2.6 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

26P/Grigg-Skjellerup          Discovered 1902-Jul-23 by Grigg, John at Thames, New Zealand
Reference: comet.disLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1905-Jan-21 22:54 00:12 Jupiter 0.1724831033029 0.172460067095511 0.172506139595402 7.6383937219785 6.96588441682007 2416867.453944976 11.7880375487807 1166.3071186736 36.5399908133139 -7.70825733821444 89287.3649791469 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1912-Jun-30 15:05 00:09 Earth 0.472730940717581 0.472659300121062 0.472802584628046 26.0223182173555 26.0221016194999 2419584.128626267 9.09519903910997 4081.58513796465 55.7217016697006 -28.9263703610022 629910.19128922 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1917-Jun-22 21:05 00:12 Earth 0.372407580540949 0.372326127222372 0.372489041420683 22.9997948341432 22.9994837536211 2421402.378434779 11.9705330613842 4847.83694080315 22.4264313005145 -33.0840105344811 1388025.86519131 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1922-Jun-12 18:28 00:16 Earth 0.268262497981849 0.268180144255705 0.268344871369159 19.8681024197579 19.867602498659 2423218.269266499 16.1843326242978 5475.87988282385 37.1163781505392 -41.4085112030224 607259.083389644 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1927-Jun-03 08:23 00:21 Earth 0.203811458235523 0.203733524117622 0.203889431486095 17.9156720524289 17.9149423269653 2425034.849077441 20.7049763316613 5911.8836501487 70.3940120021554 -48.894269129952 298551.339078249 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1932-Jun-07 09:33 00:20 Earth 0.244956378741953 0.244859789286111 0.245052995124039 18.8961596885699 18.8955840410096 2426865.898216527 19.5431677503626 6293.53455308493 47.4701424799357 -40.0585532912512 431406.054753311 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1937-Jun-22 01:55 00:16 Earth 0.384052956633078 0.383939384798234 0.384166540414982 22.9998927328772 22.9995910863836 2428706.579530687 15.6842025654217 6594.44864123919 21.7642849464971 -30.8133509382443 1314271.57959574 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1940-Oct-27 07:34 00:08 Jupiter 0.860713862340933 0.860685606357401 0.860742118464245 9.69071609251516 9.58862828138798 2429929.815172950 7.55033363103459 1512.5665766347 42.6785017602573 22.1882402004121 729624.66403946 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1942-Jun-24 10:50 00:16 Earth 0.332003913317965 0.331910788774768 0.332097058402762 22.2503421954908 22.2499815039313 2430534.951273988 16.4897362761168 6207.13919331593 30.5767478867458 -41.5659359728765 1100833.42646955 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1947-Apr-12 14:15 00:21 Earth 0.159235283912311 0.159226923481297 0.15924369654661 16.5617341514169 16.5607237813098 2432288.093768543 20.8424089012262 4712.70370512638 104.015917624833 85.068177296069 224913.818531895 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1964-Mar-17 07:20 00:06 Jupiter 0.32797987039846 0.327963320796203 0.32799642006226 7.49668848433799 7.14389598245 2438471.805367581 5.76774269030549 856.739805029619 73.1217622233622 -16.1089781841054 189957.122495258 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1977-Apr-02 10:20 < 00:01 Earth 0.182124785466322 0.182123256634856 0.182126314301361 16.8832862936963 16.8824197360393 2443235.930480469 0.253002117117949 87.0695219783128 22.2230110844427 29.9762111335837 623823.684931102 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1982-May-31 14:09 < 00:01 Earth 0.334644714831777 0.334642979253753 0.334646450410143 19.748774086606 19.7483709124573 2445121.089480970 0.425081221375588 88.8530466030356 45.789516677272 -15.3216066818472 564298.885321445 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
1999-Sep-18 06:08 00:01 Jupiter 0.512772200190283 0.51276774397549 0.512776656408573 7.7605122099568 7.54465709684484 2451439.755854632 1.43264405213991 233.574087801199 71.7274723977627 -19.907810116888 452105.470382794 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2011-Dec-08 11:41 < 00:01 Jupiter 1.52619811230472 1.52619428343302 1.52620194117642 11.078652846773 11.0284437591587 2455903.986552539 0.447649535444312 190.367198557215 90.3236722140217 -0.198980698964511 908632.557987323 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2047-Mar-25 04:12 00:03 Jupiter 0.284479407354895 0.284466076823889 0.284492737883443 7.54541600282254 7.1399164943384 2468794.675114087 3.06256326302263 663.220385425044 100.71888352213 -0.0819926442901361 64579.8050006316 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2059-Jun-02 00:44 00:04 Jupiter 0.639112012003561 0.639070585012703 0.63915344318733 7.79903014149225 7.62720447452609 2473246.530454198 4.42760876714387 3332.30225329062 116.897983216359 52.2905282799513 516291.469646132 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2083-Apr-15 08:42 00:19 Earth 0.30839061309292 0.308040462618457 0.308740765646053 15.8756460846777 15.8751018487079 2481964.862789860 19.2876508982537 17506.2287208693 60.4190446345588 4.15049505427624 49679.4053765539 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2106-Jul-12 00:35 00:19 Jupiter 1.47701326502639 1.4768651932308 1.47716133937045 10.6015757558911 10.547344162811 2490452.524544654 19.4465981805693 7996.72027354543 335.570019483182 -23.2670331991711 204363.32193449 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2110-Apr-25 17:29 00:13 Earth 0.290866537005623 0.29059731471056 0.2911357935924 13.893378935131 13.892719577524 2491836.228371385 12.6083920007724 14319.9233021202 133.461042084308 20.3553547435853 109409.908634876 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2118-Jul-09 16:21 00:19 Jupiter 0.159305273532443 0.159248832601427 0.159361716252953 7.62614190419615 6.89377152471714 2494833.181418711 18.5831339405635 2951.86899777802 255.028794070608 16.9200267733682 28725.904195865 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2136-Feb-20 20:20 02:49 Earth 0.484900532979137 0.48326846368031 0.48653339794204 27.0075575814351 27.0073541228498 2501268.347196931 168.624083687914 87098.1426115461 41.9999679706265 20.8326707930894 640960.751445837 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2141-Mar-10 07:01 04:39 Earth 0.246409357156775 0.244427367008778 0.24839704405819 20.0571322913683 20.0565931630318 2503112.792294759 279.364453906384 115268.732754106 51.4549122493514 30.8349918345254 299960.893029501 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2146-Apr-13 23:09 08:46 Earth 0.0716376893253432 0.0711054350800576 0.0722465811853179 14.9617161206479 14.9592299813332 2504973.464339194 525.949171541533 120285.418198768 272.177806589994 -76.3103301038372 38196.703363178 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2151-Jun-10 22:55 09:17 Earth 0.30135181421175 0.298741650157355 0.303983578909164 18.2428907805549 18.2424061055119 2506857.454651396 556.905948714508 182397.217829028 29.4903133088713 -44.2290493296364 681019.355553166 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2154-Mar-31 10:40 04:07 Jupiter 0.370464236904368 0.369766933818159 0.371162929136499 7.50790255639732 7.19693255007439 2507881.944153978 247.103139896557 50464.8387147435 228.092658666048 46.9638509620984 163160.518934154 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2156-Jun-17 06:39 11:49 Earth 0.232925130034968 0.232495729581131 0.23340245796181 16.7716607590096 16.7709786892863 2508690.776765920 709.166995196598 168148.175507991 121.574536886642 -82.2738310541166 292194.804259885 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2161-Mar-08 17:51 11:24 Earth 0.134656888565367 0.133693218054745 0.135773005703863 17.8740313565755 17.8729242875096 2510416.244090951 684.059032797441 231844.455848684 69.6087761545575 77.0693098316466 287670.121319076 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2166-Feb-19 13:35 09:17 Venus 0.136755377732549 0.131629600601798 0.141894640320551 15.3049156445002 15.3038780962244 2512225.066149021 556.914232301662 264746.152903377 77.6384121322988 -14.8188316284138 63730.3708439453 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2177-Jul-19 02:37 01:22 Jupiter 0.516848422046437 0.514814488760603 0.518882225343476 8.66084431977025 8.46950887127129 2516392.609016282 81.5811672832473 100558.572401243 413.715150933207 0.93771693874394 1520.82712802104 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2189-Nov-09 09:02 06:07 Jupiter 1.93106250475019 1.93003023209267 1.93209535996037 12.9317977838045 12.8978344434845 2520888.876274762 367.427331193096 73867.8485611652 747.002572980567 46.0335543260644 227589.6928068 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02
2196-Feb-17 07:43 16:40 Earth 0.434472919426316 0.423703399949955 0.445267860586074 27.0808455817688 27.080619122949 2523179.821624203 1000.44181790633 562628.064694314 87.4654738216802 17.1271350370758 223422.158024447 T K1810/3 CATAB v2.0f-lin.ifort 2019-Oct-10 10:02:01 2019-Oct-10 10:02

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1992.3       1992 XVIII   
 1987.0       1987 X   1986m 
 1981.7       1982 IV   1982a 
 1976.4       1977 VI   1977b 
 1971.1       1972 II   1972b 
 1965.8       1967 I   1966f 
 1960.4       1961 IX   1961g 
 1955.1       1957 I   1956i 
 1949.8       1952 IV   1952b 
 1944.5       1942 V   1947a 
 1939.2       1937 III   1937e 
 1933.9       1932 II   1932d 
 1928.6   26P/1927 F1   1927 V   1927e 
 1923.3   26P/1922 K1   1922 I   1922b 
 1902.0   26P/1902 O1   1902 II   1902c 
 1806.5   26P/1808 C1   1808 III   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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