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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06522318649991979 4.4413e-08  
a 2.37761748064356 1.179e-08 AU
q 2.222541692278076 1.0803e-07 AU
i 3.812874871297268 5.8173e-06 deg
node 11.7600629331207 6.2235e-05 deg
peri 293.3504501932545 7.838e-05 deg
M 171.7409232439963 4.971e-05 deg
tp 2456361.673832997152
(2013-Mar-10.17383300)
0.00018403 JED
period 1339.095049549088
3.67
9.9601e-06
2.727e-08
d
yr
n .2688382726239056 1.9996e-09 deg/d
Q 2.532693269009044 1.2559e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1405  
   data-arc span      23173 days (63.44 yr)  
   first obs. used      1951-12-01  
   last obs. used      2015-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47532  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:55:38  

Additional Information
 Earth MOID = 1.212 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
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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