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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1832552921319899 4.9602e-08  
a 3.104346238030672 2.3318e-08 au
q 2.535458361301517 1.5059e-07 au
i 2.94485519728411 5.2341e-06 deg
node 208.1206724915047 9.4967e-05 deg
peri 343.3496852952538 9.5883e-05 deg
M 197.6202470916302 1.6866e-05 deg
tp 2460101.620838071480
(2023-Jun-06.12083807)
0.00010051 TDB
period 1997.807583121477
5.47
2.2509e-05
6.163e-08
d
yr
n .1801975340575681 2.0303e-09 deg/d
Q 3.673234114759827 2.7591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      633  
   data-arc span      8997 days (24.63 yr)  
   first obs. used      1996-04-18  
   last obs. used      2020-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55749  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:25:16  

Additional Information
 Earth MOID = 1.53499 au 
 Jupiter MOID = 1.28993 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 09:44 00:04 Jupiter 1.99757575191181 1.99757213991899 1.99757936390191 3.23744404523436 3.10370641135133 2417392.905835762 4.20199581562835 140.756532796121 47.9158974222216 16.7719501744136 530950.183455216 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
1916-Jun-12 02:56 00:04 Jupiter 1.3198279208852 1.31982664212548 1.31982919965779 0.915154942050413 n/a 2421026.622527090 3.88673129503802 237.903195764433 28.1756633925624 -75.98612034483 6799448.02910615 F 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
1926-May-18 21:56 00:04 Jupiter 1.7373188415278 1.73731596509511 1.73732171795191 1.8705874269563 1.5887119653379 2424654.414103259 3.67125673226146 177.051645627262 44.9859506244719 51.817251929564 948615.101454669 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
1988-Jan-26 12:28 00:01 Jupiter 1.39165506199274 1.39165408571649 1.39165603847924 1.14911570537694 0.321214705030895 2447187.019457671 1.20742263502155 10707.0859292027 728.65983976773 -13.4981059633577 3427859.14857484 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
1998-Jan-17 12:21 < 00:01 Jupiter 1.57375393535695 1.57375320064864 1.57375467006608 1.27299180574905 0.737612612395831 2450831.014635381 0.784139737529195 642.815552067334 196.867544014174 18.1843536206618 1446758.66066267 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
2059-Oct-03 13:26 00:02 Jupiter 1.53236176612101 1.53236070278865 1.5323628294586 1.51493553123715 1.09064989796264 2473370.059673918 1.80502495775017 287.969481526281 100.872881950743 -48.1267051441854 2186651.90829335 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
2069-Oct-01 19:20 00:02 Jupiter 1.41504333537298 1.41504193279343 1.41504473795389 0.895566105099868 n/a 2477021.305282903 2.30028690054569 105.062610894842 32.8848750262297 51.7846982012147 5206878.70814773 F 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
2131-Jun-02 17:22 00:05 Jupiter 1.70016654844814 1.70016320779242 1.70016988909912 1.99897930300045 1.7319118895987 2499544.223498481 4.54097023173272 179.554592160791 27.8247037133287 -85.7996103265766 1116782.09757201 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25
2141-May-24 08:58 00:05 Jupiter 1.32293044702168 1.32292880063519 1.32293209342255 0.8614772495146 n/a 2503187.873899743 4.7704266401568 246.701966373084 29.1268404676847 71.7399621749518 6454963.49066684 F 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:25:17 2021-Feb-24 08:25

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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