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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 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1242899916715006 6.0064e-08  
a 3.146889875640847 4.1929e-08 AU
q 2.755762959206317 2.0413e-07 AU
i 1.087141699995208 7.3637e-06 deg
node 173.4052589041702 0.00031398 deg
peri 86.00391679253801 0.00031592 deg
M 17.24815422185495 3.6568e-05 deg
tp 2456302.807579398435
(2013-Jan-10.30757940)		 0.00020636 JED
period 2039.016521083789
5.58		 4.0751e-05
1.116e-07		 d
yr
n .1765557053008334 3.5286e-09 deg/d
Q 3.538016792075378 4.714e-08 AU
   Orbit Determination Parameters
   # obs. used (total)      1176  
   data-arc span      7907 days (21.65 yr)  
   first obs. used      1991-08-05  
   last obs. used      2013-03-29  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .51109  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Apr-29 13:28:53  

Additional Information
 Earth MOID = 1.74099 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 12.6 mag n/a PDS3 (MPC 30746)  

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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