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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1243002107097342 4.5017e-08  
a 3.145079226001229 3.0171e-08 AU
q 2.754145215510468 1.4091e-07 AU
i 1.087569693334214 6.1383e-06 deg
node 173.4031114875744 0.00026095 deg
peri 85.73846092394548 0.00026252 deg
M 123.4804901613411 2.707e-05 deg
tp 2456301.718086166272
(2013-Jan-09.21808617)
0.0001511 JED
period 2037.256967893866
5.58
2.9315e-05
8.026e-08
d
yr
n .176708194240303 2.5427e-09 deg/d
Q 3.536013236491989 3.3921e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1327  
   data-arc span      8568 days (23.46 yr)  
   first obs. used      1991-08-05  
   last obs. used      2015-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46523  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:21:28  

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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