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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3420309345625402 1.2451e-07  
a 2.622788331928617 4.1551e-08 AU
q 1.725713587599346 3.4132e-07 AU
i 14.26238838844443 1.5036e-05 deg
node 330.9280862546668 3.5435e-05 deg
peri 23.36097233364528 3.9642e-05 deg
M 174.293302455308 1.7204e-05 deg
tp 2456249.358963030102
(2012-Nov-17.85896303)
6.3105e-05 JED
period 1551.469674966435
4.25
3.6868e-05
1.009e-07
d
yr
n .2320380512804985 5.514e-09 deg/d
Q 3.519863076257888 5.5763e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      9954 days (27.25 yr)  
   first obs. used      1987-11-27  
   last obs. used      2015-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5977  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 18:07:12  

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
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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