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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08211114173938834 3.9065e-08  
a 2.486791375577206 9.5747e-09 au
q 2.282598096460898 9.8543e-08 au
i 7.503277193512503 4.2766e-06 deg
node 57.11887736839876 2.4056e-05 deg
peri 304.3746455921184 3.3448e-05 deg
M 79.52494431981155 2.1758e-05 deg
tp 2459080.084078300138
(2020-Aug-18.58407830)
8.7143e-05 TDB
period 1432.377385312708
3.92
8.2725e-06
2.265e-08
d
yr
n .2513304131239177 1.4515e-09 deg/d
Q 2.690984654693515 1.0361e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1504  
   data-arc span      8022 days (21.96 yr)  
   first obs. used      1999-03-21  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50077  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:27:28  

Additional Information
 Earth MOID = 1.28973 au 
 Jupiter MOID = 2.65512 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 14.85   n/a E2021B10  
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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