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91486 (1999 RS117)
Classification: Main-belt Asteroid          SPK-ID: 2091486
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1975230891568727 6.5258e-08  
a 2.749697762537378 2.1809e-08 au
q 2.206568966233254 1.7276e-07 au
i 12.37370370609283 6.0924e-06 deg
node 210.7781960398705 2.3809e-05 deg
peri 135.5340878029616 2.9271e-05 deg
M 185.4410929225014 2.3031e-05 deg
tp 2459808.042486281032
(2022-Aug-16.54248628)
0.0001136 TDB
period 1665.428020422374
4.56
1.9814e-05
5.425e-08
d
yr
n .2161606479448445 2.5717e-09 deg/d
Q 3.292826558841502 2.6116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      574  
   data-arc span      8033 days (21.99 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:41:36  

Additional Information
 Earth MOID = 1.21982 au 
 Jupiter MOID = 2.25456 au 
 T_jup = 3.284 
[ 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 MPO351487  

91486 (1999 RS117)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RS117 = 1998 HP156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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