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312589 (2009 HR102)
Classification: Main-belt Asteroid          SPK-ID: 2312589
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1855262913658251 5.778e-08  
a 2.736802904537517 2.6006e-08 au
q 2.229054011459453 1.6704e-07 au
i 15.0740057281161 6.1014e-06 deg
node 100.0827780529403 1.9836e-05 deg
peri 267.7016462706803 3.1286e-05 deg
M 80.60472231470155 1.9364e-05 deg
tp 2458830.227297904093
(2019-Dec-12.72729790)
8.8204e-05 TDB
period 1653.726592272055
4.53
2.3572e-05
6.454e-08
d
yr
n .2176901560888587 3.1029e-09 deg/d
Q 3.244551797615581 3.0831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      7114 days (19.48 yr)  
   first obs. used      2001-07-29  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59045  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 15:20:57  

Additional Information
 Earth MOID = 1.2869 au 
 Jupiter MOID = 2.4067 au 
 T_jup = 3.278 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO450244  

312589 (2009 HR102)          Discovered 2009-Apr-23 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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