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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3420309406280587 1.3112e-07  
a 2.622788335227044 4.1597e-08 AU
q 1.725713573861038 3.5812e-07 AU
i 14.26239812981359 1.5918e-05 deg
node 330.9280628664902 3.7527e-05 deg
peri 23.36098968490219 4.3624e-05 deg
M 174.2933042258672 1.8639e-05 deg
tp 2456249.358953982677
(2012-Nov-17.85895398)
7.0125e-05 JED
period 1551.469677893134
4.25
3.6909e-05
1.011e-07
d
yr
n .232038050842781 5.5201e-09 deg/d
Q 3.51986309659305 5.5824e-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 = .728532 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 15.3 mag n/a MPO287360  

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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