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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2846022712648103 5.3389e-08  
a 2.224786125166218 1.2202e-08 au
q 1.591606940865476 1.1477e-07 au
i 7.829114215339249 5.4307e-06 deg
node 252.6299175741926 4.9151e-05 deg
peri 34.07041855606914 5.1502e-05 deg
M 331.6571671713922 1.8047e-05 deg
tp 2458695.927068465073
(2019-Jul-31.42706846)
6.1287e-05 TDB
period 1212.078723928797
3.32
9.9717e-06
2.73e-08
d
yr
n .2970104110342821 2.4435e-09 deg/d
Q 2.85796530946696 1.5675e-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 = .581915 au 
 Jupiter MOID = 2.3264 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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