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31652 (1999 HS2)
Classification: Main-belt Asteroid          SPK-ID: 2031652
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147187471149089 5.7584e-08  
a 2.440531314991197 1.4319e-08 au
q 2.081315682477482 1.4215e-07 au
i 2.215983301004353 5.9529e-06 deg
node 185.6224281919806 0.0001544 deg
peri 337.790015490528 0.00015591 deg
M 161.9690588828101 2.0509e-05 deg
tp 2456773.951691752610
(2014-Apr-26.45169175)
7.8283e-05 JED
period 1392.595552044655
3.81
1.2256e-05
3.356e-08
d
yr
n .2585100889281429 2.275e-09 deg/d
Q 2.799746947504912 1.6426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      853  
   data-arc span      7460 days (20.42 yr)  
   first obs. used      1995-03-04  
   last obs. used      2015-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55345  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:20:01  

Additional Information
 Earth MOID = 1.08935 au 
 Jupiter MOID = 2.18199 au 
 T_jup = 3.486 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7 mag n/a MPO279845  

31652 (1999 HS2)          Discovered 1999-Apr-21 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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