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91187 (1998 RW66)
Classification: Main-belt Asteroid          SPK-ID: 2091187
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2025863397841168 5.7051e-08  
a 3.13343639753983 1.7693e-08 au
q 2.498644986815908 1.8093e-07 au
i 16.33643174676352 8.0548e-06 deg
node 348.5240872364968 1.154e-05 deg
peri 45.18547876248535 2.1756e-05 deg
M 24.26385619276105 1.5506e-05 deg
tp 2459259.951455531425
(2021-Feb-14.45145553)
8.7377e-05 TDB
period 2025.954803645467
5.55
1.716e-05
4.698e-08
d
yr
n .1776939936430084 1.505e-09 deg/d
Q 3.768227808263753 2.1278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1267  
   data-arc span      8407 days (23.02 yr)  
   first obs. used      1998-08-02  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:43  

Additional Information
 Earth MOID = 1.52968 au 
 Jupiter MOID = 1.86245 au 
 T_jup = 3.119 
[ 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 13.71   n/a MPO637239  

91187 (1998 RW66)          Discovered 1998-Sep-14 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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