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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457262.5 (2015-Aug-28.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0692278070029619 9.9505e-08  
q 2.678507623538109 2.7783e-07 au
tp 2456811.999126921539
(2014-Jun-03.49912692)
0.00022058 TDB
node 192.1761508528001 1.8077e-05 deg
peri 156.6906150061619 4.7763e-05 deg
i 11.92320523873738 9.7725e-06 deg
  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
 Jupiter MOID = 2.24751 au 
 T_jup = 3.259 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.901280439294898E-15 -2.759366213869793E-14 1.574632621665204E-11 6.172780998570514E-14 2.976110964094165E-12 -1.293617784367177E-14
q -2.759366213869793E-14 7.719122896851329E-14 -4.418580443926492E-11 -1.707207655944324E-13 -8.342859860507034E-12 3.774870385235465E-14
tp 1.574632621665204E-11 -4.418580443926492E-11 4.865632345803629E-8 1.196729562870514E-10 9.744133368002567E-9 -2.601209531798354E-11
node 6.172780998570514E-14 -1.707207655944324E-13 1.196729562870514E-10 3.267860574642632E-10 -2.959229775479128E-10 6.913443472728068E-11
peri 2.976110964094165E-12 -8.342859860507034E-12 9.744133368002567E-9 -2.959229775479128E-10 2.281335421017629E-9 -7.276985914099665E-11
i -1.293617784367177E-14 3.774870385235465E-14 -2.601209531798354E-11 6.913443472728068E-11 -7.276985914099665E-11 9.550182271470868E-11

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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