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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .34203093575145 1.2093e-07  
a 2.622788332209523 4.151e-08 AU
q 1.725713584665915 3.3221e-07 AU
i 14.26238937109682 1.4155e-05 deg
node 330.9280843666975 3.4226e-05 deg
peri 23.36097339278055 3.7375e-05 deg
M 174.2933027760928 1.6423e-05 deg
tp 2456249.358961526963
(2012-Nov-17.85896153)
5.9237e-05 JED
period 1551.469675215683
4.25
3.6832e-05
1.008e-07
d
yr
n .2320380512432209 5.5086e-09 deg/d
Q 3.519863079753131 5.5708e-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 = .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 15.4 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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