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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472058046975556 6.5495e-08  
a 2.439951272731498 1.5711e-08 AU
q 2.080776282206233 1.6382e-07 AU
i 2.215830539988349 6.6517e-06 deg
node 185.6346189306898 0.00015526 deg
peri 337.6746751568115 0.00015713 deg
M 58.66417477963197 2.0909e-05 deg
tp 2456773.649039748315
(2014-Apr-26.14903975)
8.068e-05 JED
period 1392.099113255757
3.81
1.3446e-05
3.681e-08
d
yr
n .25860227664254 2.4978e-09 deg/d
Q 2.799126263256764 1.8024e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      781  
   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      .5724  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:05:17  

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 (327)
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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