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JPL Small-Body Database Browser
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300995 (2008 GJ20)
Classification: Main-belt Asteroid          SPK-ID: 2300995
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09648560252451385 6.326e-08  
a 3.044384503235551 5.8181e-08 au
q 2.750645230124575 1.9927e-07 au
i 24.07004131618902 7.8398e-06 deg
node 81.07833921869751 1.45e-05 deg
peri 195.0691340071276 4.0357e-05 deg
M 228.9166674038219 4.1035e-05 deg
tp 2459306.968258961781
(2021-Apr-02.46825896)
0.00023092 TDB
period 1940.205273920969
5.31
5.5618e-05
1.523e-07
d
yr
n .1855473773001732 5.3189e-09 deg/d
Q 3.338123776346525 6.3794e-08 au
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      7213 days (19.75 yr)  
   first obs. used      1999-05-12  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60708  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 10:30:06  

Additional Information
 Earth MOID = 1.73862 au 
 Jupiter MOID = 1.76961 au 
 T_jup = 3.099 
[ 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 15.0   n/a MPO433941  

300995 (2008 GJ20)          Discovered 2008-Apr-08 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13

[ show close-approach data ]
Alternate Designations
 2008 GJ20 = 1999 JH94 = 2004 HE54 = 2010 FG103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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