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6651 (1991 RV9)
Classification: Main-belt Asteroid          SPK-ID: 2006651
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06558432099593089 4.9271e-08  
a 2.376516513812724 1.3554e-08 AU
q 2.2206542919187 1.2023e-07 AU
i 3.812978790854658 7.7099e-06 deg
node 11.78438102959282 6.9875e-05 deg
peri 293.0112777176103 9.4091e-05 deg
M 118.28332358219 6.3339e-05 deg
tp 2456360.826085733369
(2013-Mar-09.32608573)
0.00023593 JED
period 1338.165045945835
3.66
1.1448e-05
3.134e-08
d
yr
n .2690251109836355 2.3014e-09 deg/d
Q 2.532378735706748 1.4442e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1172  
   data-arc span      22717 days (62.20 yr)  
   first obs. used      1951-12-01  
   last obs. used      2014-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50109  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 18:05:07  

Additional Information
 Earth MOID = 1.20818 AU 
 T_jup = 3.535 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO279585  

6651 (1991 RV9)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 RV9 = 1990 HL4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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