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102886 (1999 XG4)
Classification: Main-belt Asteroid          SPK-ID: 2102886
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2110180719331251 5.1123e-08  
a 2.277755620228252 1.0644e-08 au
q 1.797108020912847 1.1501e-07 au
i .9760133640676351 4.253e-06 deg
node 115.2423752480824 0.00030585 deg
peri 237.4396385714927 0.00030599 deg
M 91.27379956808966 9.7788e-06 deg
tp 2458882.151545155113
(2020-Feb-02.65154516)
3.336e-05 TDB
period 1255.622580482852
3.44
8.8013e-06
2.41e-08
d
yr
n .2867103583479371 2.0097e-09 deg/d
Q 2.758403219543657 1.289e-08 au
  Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7742 days (21.20 yr)  
   first obs. used      1999-11-09  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54355  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:32:42  

Additional Information
 Earth MOID = .790236 au 
 Jupiter MOID = 2.67692 au 
 T_jup = 3.578 
[ 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 MPO436483  

102886 (1999 XG4)          Discovered 1999-Dec-04 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XG4 = 2005 JW39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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