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91500 (1999 RA147)
Classification: Main-belt Asteroid          SPK-ID: 2091500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06782428550578316 1.0001e-07  
a 2.879301985285478 2.0918e-08 au
q 2.684015385378108 2.7925e-07 au
i 11.92155127962185 9.7714e-06 deg
node 192.1279114047483 1.8083e-05 deg
peri 159.1753383476761 4.7179e-05 deg
M 78.99168197102935 4.5282e-05 deg
tp 2458608.931170832153
(2019-May-05.43117083)
0.00022308 TDB
period 1784.552183002314
4.89
1.9447e-05
5.324e-08
d
yr
n .2017312821832642 2.1984e-09 deg/d
Q 3.074588585192849 2.2337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      7389 days (20.23 yr)  
   first obs. used      1999-09-05  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54443  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:17:00  

Additional Information
 Earth MOID = 1.68298 au 
 Jupiter MOID = 2.24751 au 
 T_jup = 3.259 
[ 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 15.0   n/a MPO412707  

91500 (1999 RA147)          Discovered 1999-Sep-09 by LINEAR at Socorro
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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