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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3427470792396433 1.2112e-07  
a 2.621492817549435 4.1418e-08 au
q 1.722983811086663 3.3268e-07 au
i 14.26272748079105 1.4157e-05 deg
node 330.9264025069467 3.4241e-05 deg
peri 23.37352914389873 3.7363e-05 deg
M 267.1711834332616 1.8043e-05 deg
tp 2457800.262219991647
(2017-Feb-15.76221999)
8.5359e-05 JED
period 1550.320304832573
4.24
3.6741e-05
1.006e-07
d
yr
n .2322100787029802 5.5032e-09 deg/d
Q 3.520001824012207 5.5614e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      10004 days (27.39 yr)  
   first obs. used      1987-11-27  
   last obs. used      2015-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59079  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 19:07:26  

Additional Information
 Earth MOID = .723578 au 
 Jupiter MOID = 1.95391 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 15.4 mag n/a MPO337936  

90721 (1991 RC29)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar
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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