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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1242357928792717 5.2661e-08  
a 3.14572487732152 3.4799e-08 AU
q 2.754913253007431 1.7102e-07 AU
i 1.087404628406379 6.8866e-06 deg
node 173.3984020143159 0.00030645 deg
peri 85.83533886170963 0.00030819 deg
M 88.04939020143044 3.0128e-05 deg
tp 2456302.070906902215
(2013-Jan-09.57090690)
0.00016957 JED
period 2037.884340876306
5.58
3.3816e-05
9.258e-08
d
yr
n .1766537937306085 2.9313e-09 deg/d
Q 3.536536501635608 3.9122e-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      .50828  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Nov-21 03:37:56  

Additional Information
 Earth MOID = 1.73974 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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