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120161 (2003 HB31)
Classification: Main-belt Asteroid          SPK-ID: 2120161
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0384873229604363 4.7027e-08  
a 3.174490199211851 2.6599e-08 au
q 3.052312569680045 1.5793e-07 au
i 8.816386575659603 5.7618e-06 deg
node 211.0869526318277 2.7144e-05 deg
peri 49.38718006141973 7.6284e-05 deg
M 323.9015430454586 7.2968e-05 deg
tp 2459207.655062033799
(2020-Dec-24.15506203)
0.00041898 TDB
period 2065.90055708145
5.66
2.5965e-05
7.109e-08
d
yr
n .1742581455656225 2.1902e-09 deg/d
Q 3.296667828743657 2.7623e-08 au
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55293  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:35:05  

Additional Information
 Earth MOID = 2.04677 au 
 Jupiter MOID = 1.71369 au 
 T_jup = 3.182 
[ 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 14.5   n/a MPO432703  

120161 (2003 HB31)          Discovered 2003-Apr-26 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2003 HB31 = 2002 CQ48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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