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12307 (1991 UA)
Classification: Outer Main-belt Asteroid          SPK-ID: 2012307
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 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .25337477780945 8.34e-08  
a 3.986147576247295 8.189e-08 AU
q 2.976158319799959 3.3559e-07 AU
i 2.345527799969059 9.0119e-06 deg
node 352.0233721122101 0.00018711 deg
peri 27.91518287089574 0.000188 deg
M 307.7422155439155 1.9986e-05 deg
tp 2457222.465533811647
(2015-Jul-18.96553381)
0.00017054 JED
period 2906.889255893548
7.96
8.9577e-05
2.452e-07
d
yr
n .1238437271974228 3.8163e-09 deg/d
Q 4.99613683269463 1.0264e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      747  
   data-arc span      7508 days (20.56 yr)  
   first obs. used      1991-09-13  
   last obs. used      2012-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54735  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 17:15:13  

Additional Information
 Earth MOID = 1.97764 AU 
 T_jup = 2.997 
[ 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 PDS3 (MPC 36688)  

12307 (1991 UA)          Discovered 1991-Oct-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 UA = 1995 FX15 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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