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JPL Small-Body Database Browser
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91315 (1999 GM8)
Classification: Main-belt Asteroid          SPK-ID: 2091315
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04646205625693661 5.3133e-08  
a 2.274265006358103 1.0716e-08 au
q 2.16859797768951 1.2259e-07 au
i 11.19146958596924 6.1653e-06 deg
node 10.21246527347884 2.4893e-05 deg
peri 114.8955056976546 7.1842e-05 deg
M 128.6717868906554 6.4479e-05 deg
tp 2458552.744569541373
(2019-Mar-10.24456954)
0.00022472 TDB
period 1252.737362714064
3.43
8.8538e-06
2.424e-08
d
yr
n .2873706897510086 2.031e-09 deg/d
Q 2.379932035026696 1.1214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      7378 days (20.20 yr)  
   first obs. used      1999-03-10  
   last obs. used      2019-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58767  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:36:01  

Additional Information
 Earth MOID = 1.20289 au 
 Jupiter MOID = 2.62736 au 
 T_jup = 3.584 
[ 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 MPO474791  
diameter diameter 2.389 km 0.370 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.162   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91315 (1999 GM8)          Discovered 1999-Apr-09 by LONEOS at Anderson Mesa
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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