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12487 (1997 GJ8)
Classification: Main-belt Asteroid          SPK-ID: 2012487
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08583231174307851 3.5349e-08  
a 3.083780596028063 1.7097e-08 au
q 2.819092578562526 1.0935e-07 au
i 10.117300170788 3.6303e-06 deg
node 222.0048825470899 2.2351e-05 deg
peri 242.5298603787333 3.3904e-05 deg
M 204.476890679683 2.8397e-05 deg
tp 2459855.007863457965
(2022-Oct-02.50786346)
0.00015921 TDB
period 1977.987915681934
5.42
1.6449e-05
4.503e-08
d
yr
n .1820031341677262 1.5136e-09 deg/d
Q 3.3484686134936 1.8564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1861  
   data-arc span      14894 days (40.78 yr)  
   first obs. used      1980-01-21  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5407  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:52:38  

Additional Information
 Earth MOID = 1.85338 au 
 Jupiter MOID = 1.90604 au 
 T_jup = 3.197 
[ 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 13.2   n/a MPO347623  
diameter diameter 8.051 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.130   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12487 (1997 GJ8)          Discovered 1997-Apr-02 by LINEAR at Socorro
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 GJ8 = 1980 BE = 1998 MJ13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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