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85968 (1999 GB2)
Classification: Main-belt Asteroid          SPK-ID: 2085968
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08213547634584342 4.1804e-08  
a 2.48657803406664 1.1845e-08 au
q 2.282341762767466 1.0734e-07 au
i 7.503763850171106 5.1019e-06 deg
node 57.12132796888093 2.7707e-05 deg
peri 304.1778880130043 4.1585e-05 deg
M 340.1598427326719 3.3463e-05 deg
tp 2459079.430376744800
(2020-Aug-17.93037674)
0.00013327 TDB
period 1432.193064060056
3.92
1.0234e-05
2.802e-08
d
yr
n .2513627589980453 1.7961e-09 deg/d
Q 2.690814305365814 1.2818e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1108  
   data-arc span      7437 days (20.36 yr)  
   first obs. used      1999-03-21  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:42:04  

Additional Information
 Earth MOID = 1.29028 au 
 Jupiter MOID = 2.6572 au 
 T_jup = 3.459 
[ 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 14.8   n/a MPO344893  
diameter diameter 3.427 km 0.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85968 (1999 GB2)          Discovered 1999-Apr-08 by Kagawa, T. at Gekko
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 GB2 = 2001 XC21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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