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JPL Small-Body Database Browser
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91469 (1999 RW87)
Classification: Main-belt Asteroid          SPK-ID: 2091469
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05685109247955292 3.2419e-08  
a 2.939936183870503 1.8394e-08 au
q 2.772797599997297 9.2914e-08 au
i 2.653238775670468 3.693e-06 deg
node 46.08202613969434 8.949e-05 deg
peri 204.5807861347048 9.8017e-05 deg
M 138.9702922138083 4.0055e-05 deg
tp 2458289.737097858587
(2018-Jun-20.23709786)
0.00020559 TDB
period 1841.218297053307
5.04
1.728e-05
4.731e-08
d
yr
n .1955227148112451 1.835e-09 deg/d
Q 3.107074767743709 1.944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1207  
   data-arc span      7401 days (20.26 yr)  
   first obs. used      1999-08-22  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56296  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:17:01  

Additional Information
 Earth MOID = 1.75886 au 
 Jupiter MOID = 1.89919 au 
 T_jup = 3.269 
[ 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 14.3   n/a MPO493512  

91469 (1999 RW87)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RW87 = 2000 WG95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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