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JPL Small-Body Database Browser
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79P/du Toit-Hartley
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000022
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456558.5 (2013-Sep-23.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6185134899509153 1.7001e-06  
a 2.945858611714987 1.4079e-05 au
q 1.123805320881192 1.2004e-06 au
i 3.145618792107812 2.548e-05 deg
node 280.6403368540958 0.0007548 deg
peri 281.689317338125 0.00031317 deg
M 5.987205298911507 0.00046136 deg
tp 2456527.785890768675
(2013-Aug-23.28589077)
0.0021492 TDB
period 1846.784730312691
5.06
0.01324
3.625e-05
d
yr
n .1949333856247805 1.3975e-06 deg/d
Q 4.767911902548781 2.2788e-05 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.871755274376041E-11 6.081E-10
A2 [EST] -3.296388071159945E-11 1.561E-11
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      3684 days (10.09 yr)  
   first obs. used      2003-03-04  
   last obs. used      2013-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .86966  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Sep-13 11:15:48  

Additional Information
 Earth MOID = .134779 au 
 T_jup = 2.947 
[ 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 15.0   1. 16 from 115 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 16 autocmod 2.5c
diameter diameter 2.8 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264  

79P/du Toit-Hartley          Discovered 1945-Apr-09 by du Toit, D.
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
1902-Apr-06 18:24 00:58 Earth 0.248443231776009 0.246580459157481 0.250314503407774 6.21760092184072 6.21587578878355 2415846.266382271 58.2106624045348 118928.574223316 18851.7817727617 -39.05024832738 2163.30994131159 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1904-Mar-13 19:46 02:06 Jupiter 0.526382724301298 0.522318036529938 0.530473696413967 6.71689870526275 6.47290135447343 2416553.323441443 125.779597505782 277564.288466954 2920.0232767967 -43.930754328298 13282.4538950115 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1916-Oct-11 20:34 11:07 Jupiter 0.601280172318675 0.592036591889534 0.61056542424086 6.24733418408073 6.01762305880931 2421148.356728583 666.65745961266 527131.425471271 469.940222590199 -31.6630019429964 41297.5618098945 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1945-Apr-09 01:53 03:45 Earth 0.282006036440817 0.275918033205236 0.292509187205713 5.38350462939961 5.38174929578529 2431554.578734267 225.298545391647 1811178.1941162 1259.56879801187 76.6962465864762 42894.7789282902 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1961-Apr-15 02:37 04:03 Earth 0.387358580872963 0.383918995993123 0.390799791371946 6.00733360259167 6.00618846196915 2437404.608950874 243.391068808795 176063.980051688 541.393821350027 13.0627360858284 14034.8748454447 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1963-Dec-14 20:48 03:17 Jupiter 0.342801338083894 0.342759915143006 0.342842848643893 5.48755631997561 5.0171212211431 2438378.366905762 196.980811853038 9488.31646639665 431.7073491373 78.4164060520938 119272.441024198 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1982-Apr-05 10:51 00:16 Earth 0.295073796203976 0.294415247493502 0.29573236256666 7.28820620656652 7.28696713046687 2445064.951892229 16.2574313181251 33036.2503856638 120.778143087584 6.38868382835565 19744.8001523225 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
1999-May-11 06:06 00:02 Jupiter 1.82580300622157 1.82569573235766 1.82591028027054 11.0280312644558 10.9858835770137 2451309.753927538 1.53232558989612 5427.70721950913 226.867312758647 -10.8940230787797 161690.555118846 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2003-Apr-28 22:36 < 00:01 Mars 0.0668596520203572 0.066853181347962 0.0668661228426719 14.3070076532591 14.3067083593987 2452758.441879717 0.501344834580632 361.274669568662 76.3563334149436 27.3982683937155 64881.3687858575 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2011-Sep-28 13:41 00:06 Jupiter 0.600767466606944 0.600748016131677 0.600786917370844 6.66264795530521 6.44756358863651 2455833.070115191 6.00346846055492 1195.26151661888 278.10728354334 -38.6140730972494 175671.27668744 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2047-May-05 10:48 00:56 Jupiter 0.894554957676765 0.893886855769365 0.895223057639272 7.81205032520974 7.68988952289143 2468835.950204920 55.5412400280703 33246.868745793 1688.31262600936 -9.5695158224229 8273.76458711175 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2070-Jun-30 10:53 01:10 Jupiter 0.907089088488635 0.906489759547542 0.907688519583368 7.70011094695774 7.57787217392704 2477292.953325339 69.799528825713 33579.668607094 1004.41199150303 -29.6795681413794 61192.2527637149 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2106-Feb-09 17:52 01:23 Jupiter 0.625012500553268 0.624741417076975 0.625283692244401 6.529767473545 6.31881677363201 2490300.244332788 82.8536589356295 18902.7647768313 577.598094067699 -47.8038971205854 26118.317947361 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2118-Jun-15 18:27 02:04 Jupiter 1.88367479468204 1.88301957598614 1.88433002170363 11.3361844611366 11.296448479699 2494809.268820147 124.267548334626 33268.8541754878 1652.78021317194 13.1975143629816 26016.5679016425 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2130-May-06 03:51 01:21 Earth 0.4578102656175 0.453352907053039 0.462270336859441 12.0626315052306 12.0621490095222 2499151.660578907 81.0288602534427 229177.799777642 339.105994040644 14.0444324783164 80593.630055191 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2153-Dec-15 16:49 02:15 Jupiter 0.31620287482678 0.316119318632842 0.31628644234403 5.57340220941695 5.07004435167647 2507776.200835852 135.080984243941 6379.77874402293 3567.96162821232 -58.0841593216974 20660.3437973362 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46
2188-Apr-22 13:27 03:06 Earth 0.274735221520697 0.272066774336891 0.277445626246596 6.10564171692734 6.10405308530234 2520323.060754944 186.234844564809 216005.396253908 462.040038701927 -51.6161026815046 23444.8215668752 T 16 CATAB v2.0e-lin.ifort 2017-Nov-30 18:46:52 2017-Nov-30 18:46

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1988.4       1987 IX   1986q 
 1983.3   79P/1982 C1-A   1982 II   1982b 
 1942.9   79P/1945 G1   1945 II   1945c 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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