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JPL Small-Body Database Browser
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91313 (1999 GR7)
Classification: Main-belt Asteroid          SPK-ID: 2091313
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334511789460452 4.0354e-08  
a 2.378558939255757 1.0604e-08 au
q 2.061137444619421 9.6172e-08 au
i 1.477142899232502 4.7988e-06 deg
node 159.5026655102611 0.0001531 deg
peri 54.38916603320024 0.0001542 deg
M 261.9952167589526 2.1199e-05 deg
tp 2459365.265768169699
(2021-May-30.76576817)
8.0079e-05 TDB
period 1339.890484917605
3.67
8.9603e-06
2.453e-08
d
yr
n .26867867490091 1.7968e-09 deg/d
Q 2.695980433892092 1.2019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      870  
   data-arc span      7564 days (20.71 yr)  
   first obs. used      1999-03-19  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55623  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:16:32  

Additional Information
 Earth MOID = 1.05514 au 
 Jupiter MOID = 2.26852 au 
 T_jup = 3.527 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO502690  
diameter diameter 2.045 km 0.606 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.266   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91313 (1999 GR7)          Discovered 1999-Apr-07 by LONEOS at Anderson Mesa
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 GR7 = 1999 FP27 = 2000 QH95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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