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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203180564452258 6.2468e-08  
a 2.370646529417371 1.3632e-08 AU
q 2.085414946479253 1.493e-07 AU
i 5.82984138774167 6.1912e-06 deg
node 216.5154381552607 4.8308e-05 deg
peri 171.472172869007 5.2651e-05 deg
M 109.009662483242 2.279e-05 deg
tp 2456596.797789567770
(2013-Oct-31.29778957)
8.3188e-05 JED
period 1333.210216827747
3.65
1.15e-05
3.149e-08
d
yr
n .2700249333946654 2.3291e-09 deg/d
Q 2.655878112355488 1.5272e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1244  
   data-arc span      11087 days (30.35 yr)  
   first obs. used      1984-11-18  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51669  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:30:01  

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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