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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1471511143831089 5.7578e-08  
a 2.440582362314974 1.436e-08 au
q 2.081447947956566 1.4215e-07 au
i 2.21620493227972 5.953e-06 deg
node 185.6208212090652 0.00015438 deg
peri 337.8294182975413 0.00015589 deg
M 213.619582377504 2.0623e-05 deg
tp 2458166.764206159313
(2018-Feb-17.26420616)
8.114e-05 JED
period 1392.639244568079
3.81
1.2291e-05
3.365e-08
d
yr
n .2585019784586441 2.2814e-09 deg/d
Q 2.799716776673383 1.6473e-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 = 1.08846 au 
 Jupiter MOID = 2.1818 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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