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312450 (2008 KG9)
Classification: Main-belt Asteroid          SPK-ID: 2312450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01344832149078969 8.1897e-08  
a 3.083735473041354 5.8154e-08 au
q 3.042264407007341 2.5245e-07 au
i 9.582442405910795 8.881e-06 deg
node 227.90384310 3.2834e-05 deg
peri 45.84033971558305 0.00051742 deg
M 43.15576900157928 0.0005049 deg
tp 2458763.389677717438
(2019-Oct-06.88967772)
0.0027781 TDB
period 1977.944501894949
5.42
5.5951e-05
1.532e-07
d
yr
n .1820071289437624 5.1485e-09 deg/d
Q 3.125206539075366 5.8936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      1999-11-02  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59171  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:01:56  

Additional Information
 Earth MOID = 2.03406 au 
 Jupiter MOID = 1.87947 au 
 T_jup = 3.205 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO494656  

312450 (2008 KG9)          Discovered 2008-May-27 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2008 KG9 = 1999 VZ17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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