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100431 (1996 HU20)
Classification: Main-belt Asteroid          SPK-ID: 2100431
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833218526870704 5.0257e-08  
a 3.104178617489962 2.3842e-08 au
q 2.535114842260114 1.5208e-07 au
i 2.94500389557788 5.2363e-06 deg
node 208.1194768601308 0.00010546 deg
peri 343.4004766302691 0.00010637 deg
M 161.5081977051959 1.6786e-05 deg
tp 2458104.288419374757
(2017-Dec-16.78841937)
8.7484e-05 TDB
period 1997.645776556815
5.47
2.3015e-05
6.301e-08
d
yr
n .180212129810373 2.0762e-09 deg/d
Q 3.673242392719811 2.8213e-08 au
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      8590 days (23.52 yr)  
   first obs. used      1996-04-18  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56516  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 11:53:33  

Additional Information
 Earth MOID = 1.53526 au 
 Jupiter MOID = 1.29098 au 
 T_jup = 3.193 
[ 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
absolute magnitude H 14.9   n/a MPO449610  

100431 (1996 HU20)          Discovered 1996-Apr-18 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1906-Jul-01 09:45 00:04 Jupiter 1.9975761049534 1.99757245936225 1.99757975054171 3.23744511317211 3.10370754945147 2417392.906014430 4.27389046249459 142.290965369364 49.2655116959353 17.0678488126645 523663.23628731 T 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
1916-Jun-12 02:57 00:04 Jupiter 1.31982779142041 1.31982649419669 1.3198290886573 0.915155295287168 n/a 2421026.622665537 3.95371650808538 242.309685476749 29.4181470573146 -76.1411483924901 6516722.72725057 F 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
1926-May-18 21:57 00:04 Jupiter 1.73731859189623 1.73731569491271 1.73732148887115 1.87058575295748 1.58870995023619 2424654.414243360 3.73151914815252 178.670351514793 45.3147328049056 52.0670171667218 943321.484640071 T 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
1988-Jan-26 12:28 00:01 Jupiter 1.39165500686126 1.39165402842458 1.39165598550951 1.1491158820936 0.321215262153094 2447187.019540308 1.21808981514566 10737.51321451 731.404315505329 -13.4981670599832 3408371.86863556 T 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
1998-Jan-17 12:21 < 00:01 Jupiter 1.5737536975456 1.57375294938396 1.57375444570786 1.27299063870221 0.737610488010749 2450831.014723709 0.786271342900732 658.828899413964 202.331312999294 18.1872052491497 1406237.25547928 T 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
2059-Oct-03 13:26 00:02 Jupiter 1.53236177455284 1.53236064543545 1.5323629036759 1.51493537883908 1.09064968906726 2473370.059698849 1.85890388102232 299.911186583717 108.330759574176 -48.4651239055395 2000988.94180505 T 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
2069-Oct-01 19:20 00:02 Jupiter 1.41504310504186 1.41504163014192 1.41504457994323 0.895565707188578 n/a 2477021.305325428 2.36107310746703 109.034481565305 34.2146683034982 51.0338068744624 4961007.56690877 F 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
2131-Jun-02 17:22 00:05 Jupiter 1.7001665351983 1.70016309236138 1.7001699780301 1.99897882416998 1.73191133468894 2499544.223440264 4.63448306752689 184.211444972748 30.0292736223868 -86.0026077747697 1042275.99564519 T 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53
2141-May-24 08:58 00:05 Jupiter 1.32293024496864 1.3229285447051 1.32293194524723 0.861477382201179 n/a 2503187.873823905 4.86257642021817 252.350733249978 29.833290142496 71.5354257581032 6294771.96295435 F 21 CATAB v2.0f-lin.ifort 2019-Nov-07 11:53:54 2019-Nov-07 11:53

Alternate Designations
 1996 HU20 = 1997 NM5 = 2001 DL45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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