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JPL Small-Body Database Browser
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91311 (1999 GB7)
Classification: Main-belt Asteroid          SPK-ID: 2091311
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 .1762835180050908 6.8231e-08  
a 2.402986810529732 1.2818e-08 au
q 1.979379841849718 1.6174e-07 au
i 23.20848678954815 7.4769e-06 deg
node 206.2234360795448 9.5014e-06 deg
peri 22.26076836272798 1.3583e-05 deg
M 230.0571343065116 1.1683e-05 deg
tp 2459491.606233920885
(2021-Oct-04.10623392)
4.6762e-05 TDB
period 1360.584463548415
3.73
1.0886e-05
2.98e-08
d
yr
n .2645921731761637 2.1171e-09 deg/d
Q 2.826593779209746 1.5078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      7554 days (20.68 yr)  
   first obs. used      1999-03-25  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52787  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:16:32  

Additional Information
 Earth MOID = .984085 au 
 Jupiter MOID = 2.16481 au 
 T_jup = 3.395 
[ 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 15.0   n/a MPO453352  
diameter diameter 2.458 km 0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.385   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91311 (1999 GB7)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 GB7 = 2000 SB233 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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