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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .21073780580816 6.4789e-08  
a 2.377675630364725 1.2883e-08 AU
q 1.876609485098129 1.5556e-07 AU
i 3.402043210238865 6.2296e-06 deg
node 93.30814734509619 9.6706e-05 deg
peri 308.4629324228445 9.861e-05 deg
M 106.5044180350718 1.6162e-05 deg
tp 2456604.320080342529
(2013-Nov-07.82008034)
5.948e-05 JED
period 1339.144175500056
3.67
1.0884e-05
2.98e-08
d
yr
n .2688284104029133 2.1849e-09 deg/d
Q 2.878741775631321 1.5598e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      743  
   data-arc span      8498 days (23.27 yr)  
   first obs. used      1991-10-18  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54891  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:36:59  

Additional Information
 Earth MOID = .887158 AU 
 T_jup = 3.508 
[ 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
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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