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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1243002030755575 4.9502e-08  
a 3.145079232159154 3.4052e-08 AU
q 2.754145244913052 1.6134e-07 AU
i 1.08757067272426 6.6e-06 deg
node 173.4030618649486 0.00029103 deg
peri 85.73850562008205 0.00029274 deg
M 123.4804932692583 2.8045e-05 deg
tp 2456301.718066526146
(2013-Jan-09.21806653)
0.00015817 JED
period 2037.256973877153
5.58
3.3086e-05
9.058e-08
d
yr
n .1767081937213229 2.8698e-09 deg/d
Q 3.536013219405255 3.8285e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      8108 days (22.20 yr)  
   first obs. used      1991-08-05  
   last obs. used      2013-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47347  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:07:33  

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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