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7943 (1991 PQ12)
Classification: Main-belt Asteroid          SPK-ID: 2007943
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .124300206966093 4.5257e-08  
a 3.145079229190886 3.0413e-08 AU
q 2.754145230077699 1.4205e-07 AU
i 1.087569698852282 6.214e-06 deg
node 173.4031130364966 0.00026293 deg
peri 85.73845669394814 0.00026451 deg
M 123.4804919022244 2.7155e-05 deg
tp 2456301.718075251502
(2013-Jan-09.21807525)
0.0001517 JED
period 2037.256970993065
5.58
2.955e-05
8.09e-08
d
yr
n .1767081939714838 2.5632e-09 deg/d
Q 3.536013228304073 3.4193e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1302  
   data-arc span      8516 days (23.32 yr)  
   first obs. used      1991-08-05  
   last obs. used      2014-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46702  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:23:34  

Additional Information
 Earth MOID = 1.74072 AU 
 T_jup = 3.197 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO267739  

7943 (1991 PQ12)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 PQ12 = 1995 DF1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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