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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472058057377669 6.5473e-08  
a 2.439951273825641 1.5639e-08 AU
q 2.080776280601247 1.6379e-07 AU
i 2.215831037400706 6.586e-06 deg
node 185.6346273410526 0.00015462 deg
peri 337.6746680407828 0.00015647 deg
M 58.664172871895 2.0735e-05 deg
tp 2456773.649046972834
(2014-Apr-26.14904697)
8.0032e-05 JED
period 1392.099114192142
3.81
1.3384e-05
3.664e-08
d
yr
n .2586022764685932 2.4863e-09 deg/d
Q 2.799126267050035 1.7941e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      797  
   data-arc span      7049 days (19.30 yr)  
   first obs. used      1995-03-04  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .571  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:39:17  

Additional Information
 Earth MOID = 1.08958 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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