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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04659464304858125 5.356e-08  
a 2.27385204026414 1.0938e-08 au
q 2.167902716102744 1.2391e-07 au
i 11.19716790268108 6.0923e-06 deg
node 10.15127475271238 2.4736e-05 deg
peri 116.0025095297656 7.061e-05 deg
M 241.3436509592441 6.3064e-05 deg
tp 2459809.290990568275
(2022-Aug-17.79099057)
0.00021901 TDB
period 1252.396165952625
3.43
9.0368e-06
2.474e-08
d
yr
n .2874489796335082 2.0741e-09 deg/d
Q 2.379801364425536 1.1448e-08 au
  Orbit Determination Parameters
   # obs. used (total)      708  
   data-arc span      8157 days (22.33 yr)  
   first obs. used      1999-03-10  
   last obs. used      2021-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:17:24  

Additional Information
 Earth MOID = 1.2021 au 
 Jupiter MOID = 2.62432 au 
 T_jup = 3.584 
[ 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 15.57   n/a MPO637241  
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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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