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13971 (1991 UF1)
Classification: Main-belt Asteroid          SPK-ID: 2013971
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2104460007569137 6.7714e-08  
a 2.378324061641131 1.2593e-08 AU
q 1.877815274364816 1.6209e-07 AU
i 3.402530128719729 6.6237e-06 deg
node 93.31840771215035 0.00010157 deg
peri 308.5448637801136 0.00010363 deg
M 52.68847083703694 1.7233e-05 deg
tp 2456604.426877567765
(2013-Nov-07.92687757)
6.377e-05 JED
period 1339.692022832185
3.67
1.064e-05
2.913e-08
d
yr
n .2687184769817018 2.1342e-09 deg/d
Q 2.878832848917447 1.5243e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      724  
   data-arc span      8201 days (22.45 yr)  
   first obs. used      1991-10-18  
   last obs. used      2014-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56962  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:04:51  

Additional Information
 Earth MOID = .887466 AU 
 T_jup = 3.507 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO272706  

13971 (1991 UF1)          Discovered 1991-Oct-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 UF1 = 1993 FR31 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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