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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203180335171507 6.4546e-08  
a 2.370646536037466 1.442e-08 AU
q 2.085415006657193 1.5527e-07 AU
i 5.829842501312782 6.5692e-06 deg
node 216.5154442787506 5.0239e-05 deg
peri 171.4721580476014 5.4687e-05 deg
M 109.0096674139022 2.3071e-05 deg
tp 2456596.797769616728
(2013-Oct-31.29776962)
8.444e-05 JED
period 1333.210222412287
3.65
1.2164e-05
3.33e-08
d
yr
n .2700249322635874 2.4637e-09 deg/d
Q 2.655878065417739 1.6155e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1181  
   data-arc span      11057 days (30.27 yr)  
   first obs. used      1984-11-18  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52019  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:11:21  

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
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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