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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0568510616671877 3.2234e-08  
a 2.939936195980924 1.7551e-08 au
q 2.772797702005615 9.23e-08 au
i 2.653238734707454 3.6664e-06 deg
node 46.0818965296625 8.4615e-05 deg
peri 204.5808954118156 9.2754e-05 deg
M 138.9703110754273 3.8531e-05 deg
tp 2458289.736996999178
(2018-Jun-20.23699700)
0.00019726 TDB
period 1841.218308430048
5.04
1.6488e-05
4.514e-08
d
yr
n .1955227136031258 1.7509e-09 deg/d
Q 3.107074689956233 1.8549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1248  
   data-arc span      7737 days (21.18 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56195  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:47  

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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