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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08213547834676498 4.1582e-08  
a 2.486578032306906 1.1536e-08 au
q 2.28234175617682 1.0653e-07 au
i 7.503762914908695 5.0166e-06 deg
node 57.12132570358613 2.7652e-05 deg
peri 304.1778845212557 4.0638e-05 deg
M 340.1598496703734 3.1768e-05 deg
tp 2459079.430349060657
(2020-Aug-17.93034906)
0.00012649 TDB
period 1432.193062539726
3.92
9.9666e-06
2.729e-08
d
yr
n .2513627592648769 1.7492e-09 deg/d
Q 2.690814308436991 1.2484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1119  
   data-arc span      7801 days (21.36 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:57:55  

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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