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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06522318618070529 4.4412e-08  
a 2.377617480010724 1.177e-08 AU
q 2.222541692445485 1.0803e-07 AU
i 3.812874849208035 5.8086e-06 deg
node 11.7600627269234 6.2081e-05 deg
peri 293.3504531462853 7.8211e-05 deg
M 171.7409208897506 4.9647e-05 deg
tp 2456361.673842009308
(2013-Mar-10.17384201)
0.00018378 JED
period 1339.09504901446
3.67
9.9435e-06
2.722e-08
d
yr
n .2688382727312382 1.9963e-09 deg/d
Q 2.532693267575963 1.2538e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1408  
   data-arc span      23203 days (63.53 yr)  
   first obs. used      1951-12-01  
   last obs. used      2015-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47518  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:54:41  

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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