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7946 (1991 RV13)
Classification: Main-belt Asteroid          SPK-ID: 2007946
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203180337963068 6.6673e-08  
a 2.370646537165566 1.5248e-08 AU
q 2.085415006987782 1.6134e-07 AU
i 5.829841718858789 6.8952e-06 deg
node 216.5154402615187 5.1625e-05 deg
peri 171.4721640112435 5.6296e-05 deg
M 109.0096647917452 2.346e-05 deg
tp 2456596.797779039364
(2013-Oct-31.29777904)
8.6073e-05 JED
period 1333.210223363923
3.65
1.2863e-05
3.522e-08
d
yr
n .2700249320708455 2.6052e-09 deg/d
Q 2.655878067343351 1.7082e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1156  
   data-arc span      10999 days (30.11 yr)  
   first obs. used      1984-11-18  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51671  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:21:29  

Additional Information
 Earth MOID = 1.09022 AU 
 T_jup = 3.528 
[ 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 MPO324381  

7946 (1991 RV13)          Discovered 1991-Sep-13 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1991 RV13 = 1984 WM 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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