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85974 (1999 GF21)
Classification: Main-belt Asteroid          SPK-ID: 2085974
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2259784530189867 3.2017e-08  
a 2.526197455937078 1.1024e-08 au
q 1.955331262823917 8.1489e-08 au
i 9.648179436834072 1.1028e-05 deg
node 195.5275739791722 1.9155e-05 deg
peri 89.26758426061954 4.0719e-05 deg
M 39.31455940757253 3.3842e-05 deg
tp 2458840.341394329653
(2019-Dec-22.84139433)
0.00013783 TDB
period 1466.558417801303
4.02
9.5994e-06
2.628e-08
d
yr
n .2454726628208373 1.6068e-09 deg/d
Q 3.097063649050239 1.3515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1163  
   data-arc span      7785 days (21.31 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49515  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:57:55  

Additional Information
 Earth MOID = .968345 au 
 Jupiter MOID = 2.1532 au 
 T_jup = 3.398 
[ 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 14.7   n/a MPO337906  

85974 (1999 GF21)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 GF21 = 2000 SZ153 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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