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JPL Small-Body Database Browser
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103P/Hartley 2
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000041
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2455530.5 (2010-Nov-30.0) TDB
Reference: JPL K173/7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6948883789281467 1.1697e-07  
a 3.46980916452526 1.4796e-06 au
q 1.058679098998275 5.099e-08 au
i 13.61926973311054 2.2786e-06 deg
node 219.7583231740731 6.3062e-06 deg
peri 181.2099869444809 8.2111e-06 deg
M 4.991761696667041 3.8751e-06 deg
tp 2455497.765315841213
(2010-Oct-28.26531584)
6.0561e-06 TDB
period 2360.787035373048
6.46
0.00151
4.134e-06
d
yr
n .1524915185511908 9.7535e-08 deg/d
Q 5.880939230052245 2.5077e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.81473130558195E-10 4.823E-11
A2 [EST] 2.539602225693799E-10 1.473E-12
  Orbit Determination Parameters
   # obs. used (total)      6097  
   data-arc span      5313 days (14.55 yr)  
   first obs. used      2004-09-20  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .54139  
   source      ORB  
   producer      Javier Roa  
   solution date      2019-May-15 16:14:27  

Additional Information
 Earth MOID = .0666239 au 
 Jupiter MOID = .269774 au 
 T_jup = 2.641 
[ 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 14.2   1. K173/7 from 594 observations, assumed slope, autocmod 2.6q
comet total magnitude slope K1 15.   n/a K173/7 autocmod 2.6q
diameter diameter 1.6 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  
rotation period rot_per 18.1 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Harmon, J.K.; Nolan, M.C; Howell, E.S.; Giorgini, J.D. (2010) CBET 2515.]
[Belton, M.J.S.; Thomas, P.; Li, J.-Y.; Williams, J.; et al. (2013) Icarus 222, 595-609.]

103P/Hartley 2          Discovered 1986-Mar-15 by Hartley, Malcolm at U. K. Schmidt Telescope Unit, Siding Spring
Reference: comet.disLast Updated: 2003-08-29

[ hide close-approach data ]
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
1947-Aug-26 05:40 05:58 Jupiter 0.186661008030439 0.180239455488114 0.193087086948076 7.84420227453489 7.24265096264417 2432423.736322777 358.318699738198 323649.178013815 674.887108953674 -10.386407449158 6791.09200308688 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
1971-Apr-28 20:12 00:15 Jupiter 0.0854200286030019 0.0853733192186655 0.0854667382989831 8.32913788962048 7.03865017125962 2441070.341796533 14.8441589378358 2342.14644942773 431.214699309668 -4.0905734888708 6193.06530608221 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
1982-Nov-02 15:36 00:35 Jupiter 0.325396182935088 0.325366652374501 0.325425715968267 6.64227606784581 6.23808716460569 2445276.149798379 34.9005786447063 2077.19905018876 93.9688069644498 44.1122793649362 433244.580060288 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
1993-Dec-19 07:17 00:05 Jupiter 0.374289127871502 0.374283715605687 0.374294540504603 7.10430897696667 6.77828686372046 2449340.803757018 5.17019392823802 954.852100213891 204.719063775643 79.5183488929039 282529.362454075 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2005-Dec-10 10:25 < 00:01 Jupiter 1.82613804524794 1.82613468177022 1.82614140872586 11.7472608438439 11.7077099366149 2453714.933827510 0.938004290203396 170.57102370524 54.0828765541168 11.8190836261951 1421283.81870796 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2010-Oct-20 17:33 < 00:01 Earth 0.120878685511751 0.120878566021215 0.120878805002287 11.8796586524698 11.8778030173367 2455490.231501431 0.0209045978154052 5.96202174355567 2.99887377078577 -2.3773328504753 2793528.42037923 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2023-Sep-26 05:44 00:05 Earth 0.382668772993281 0.382626258912398 0.382711287310328 18.2834455472023 18.2830647131154 2460213.739005231 4.77542962017779 2172.3704203657 16.4785238972756 -12.6115841488826 667517.991694365 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2054-Mar-18 21:03 00:12 Jupiter 0.718482863696932 0.71838977709948 0.718575955058815 8.51278396963567 8.37315247526486 2471345.377210150 11.8620186115943 5509.43290839138 603.393367656554 -33.504563168099 84486.8120078686 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2065-Nov-13 20:58 00:11 Jupiter 0.267514041678129 0.267488673286461 0.267539411876105 6.90616369252012 6.43137238345285 2475603.373759862 11.2436771956973 1797.98739988524 582.457776865768 48.1804581594531 57744.8078453181 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2076-Dec-11 10:00 00:22 Jupiter 0.24609754483501 0.246092494212779 0.246102598585088 6.99158181310349 6.48063143958156 2479648.916641259 21.8084808109278 1636.76837990266 119.203862459501 -81.400947221075 334168.039353585 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2088-Jul-29 05:55 00:21 Jupiter 0.472593514947688 0.472446386259762 0.472740651150313 8.11607698334672 7.89215652091545 2483896.746184943 21.4824807789043 7931.14815522512 228.914822596129 23.5414569950935 91439.8343199146 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2136-Dec-20 10:20 01:25 Jupiter 1.44516285678731 1.44470545442923 1.44562031863023 10.3140151762845 10.2570313281654 2501571.930876864 85.4671860404803 27156.7244547075 2276.86981873146 -33.4535493717235 36125.3083623515 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2148-Aug-23 12:38 01:40 Jupiter 0.448564878199118 0.448504438400752 0.448625402583884 6.57840367310335 6.28480757285196 2505836.026664698 99.9607806946226 11508.1908501899 1325.11227767068 75.8730609495634 44049.2455178272 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2159-Aug-28 14:53 00:35 Jupiter 0.240094933697301 0.239770709820637 0.240419259559843 7.94321835563896 7.48591930387928 2509858.120211938 35.4108667124959 18055.0102725975 467.626286743323 27.3389522748424 30664.8223721513 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2178-Oct-25 20:23 00:56 Earth 0.292512544676843 0.288883370820194 0.296156495016535 8.70992798528183 8.70888211126907 2516856.349473418 56.1865604674912 208887.177310483 519.899775611744 -29.7528641056353 76664.610482264 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22
2195-Apr-01 03:40 13:16 Jupiter 0.106110430604467 0.102450701971215 0.109980950641518 7.87817213621664 6.78974753101146 2522857.653045507 796.487569222784 317348.954248239 396.901602508767 -52.5311108604463 34285.5271565751 T K173/7 CATAB v2.0e-lin.ifort 2019-May-15 16:22:01 2019-May-15 16:22

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1991.4   103P/1991 N1   1991 XV   1991t 
 1985.0   103P/1986 E2   1985 V   1986c 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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