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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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3413088089235185 1.3668e-07  
a 2.624302701866049 2.9526e-08 AU
q 1.728605072437376 3.6747e-07 AU
i 14.25636247373782 1.5559e-05 deg
node 330.9256874163735 4.1669e-05 deg
peri 23.40551373086837 4.8124e-05 deg
M 127.8666435689764 1.7879e-05 deg
tp 2456248.963723532538
(2012-Nov-17.46372353)
7.2764e-05 JED
period 1552.813571908446
4.25
2.6206e-05
7.175e-08
d
yr
n .2318372317918056 3.9126e-09 deg/d
Q 3.520000331294721 3.9604e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      228  
   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      .60795  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 12:33:55  

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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