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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .124496020315413 4.4807e-08  
a 3.144300567640706 2.9652e-08 au
q 2.752847660293944 1.4006e-07 au
i 1.08765708421125 5.9865e-06 deg
node 173.4142287517897 0.00025932 deg
peri 85.60085192656203 0.00026083 deg
M 194.3286464858108 2.7081e-05 deg
tp 2458337.693844868798
(2018-Aug-07.19384487)
0.00015771 JED
period 2036.500438948072
5.58
2.8807e-05
7.887e-08
d
yr
n .1767738386474169 2.5005e-09 deg/d
Q 3.535753474987468 3.3343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1385  
   data-arc span      8896 days (24.36 yr)  
   first obs. used      1991-08-05  
   last obs. used      2015-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47319  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:05:38  

Additional Information
 Earth MOID = 1.73662 au 
 Jupiter MOID = 1.51448 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
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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