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90721 (1991 RC29)
Classification: Main-belt Asteroid          SPK-ID: 2090721
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3413088015773088 1.3095e-07  
a 2.624302700505063 4.1791e-08 AU
q 1.728605090819585 3.5785e-07 AU
i 14.25636071184647 1.5912e-05 deg
node 330.9256680031875 3.7538e-05 deg
peri 23.40551878614966 4.3656e-05 deg
M 127.8666531514378 1.8e-05 deg
tp 2456248.963682628874
(2012-Nov-17.46368263)
7.0588e-05 JED
period 1552.813570700492
4.25
3.7092e-05
1.016e-07
d
yr
n .2318372319721548 5.5378e-09 deg/d
Q 3.52000031019054 5.6054e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      227  
   data-arc span      9596 days (26.27 yr)  
   first obs. used      1987-11-27  
   last obs. used      2014-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59815  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 17:49:28  

Additional Information
 Earth MOID = .729811 AU 
 T_jup = 3.277 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO250965  

90721 (1991 RC29)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675)
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1991 RC29 = 2001 AH43 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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