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215120 (1999 JG4)
Classification: Mars-crossing Asteroid          SPK-ID: 2215120
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2844289050630947 5.3458e-08  
a 2.224534060984297 1.2313e-08 au
q 1.591812273742974 1.1478e-07 au
i 7.828916194378031 5.4301e-06 deg
node 252.6293119674814 4.9154e-05 deg
peri 34.06744981749833 5.1503e-05 deg
M 90.48178773884828 1.8722e-05 deg
tp 2458695.909966509868
(2019-Jul-31.40996651)
6.1281e-05 TDB
period 1211.872740323502
3.32
1.0061e-05
2.755e-08
d
yr
n .2970608942849066 2.4663e-09 deg/d
Q 2.85725584822562 1.5815e-08 au
  Orbit Determination Parameters
   # obs. used (total)      324  
   data-arc span      7297 days (19.98 yr)  
   first obs. used      1999-05-10  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5752  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:21:46  

Additional Information
 Earth MOID = .582705 au 
 Jupiter MOID = 2.32857 au 
 T_jup = 3.581 
[ 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 16.7   n/a MPO433407  

215120 (1999 JG4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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