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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2528233549786593 4.6199e-08  
a 3.98342440060061 3.6513e-08 au
q 2.976321679336909 1.8901e-07 au
i 2.345639542505146 5.6886e-06 deg
node 352.0187720536119 0.00012576 deg
peri 27.90392019142607 0.00012667 deg
M 22.07565222995347 1.1155e-05 deg
tp 2457222.428532054875
(2015-Jul-18.92853206)
9.0135e-05 JED
period 2903.910960024228
7.95
3.9927e-05
1.093e-07
d
yr
n .1239707432341508 1.7045e-09 deg/d
Q 4.990527121864311 4.5744e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      8858 days (24.25 yr)  
   first obs. used      1991-09-13  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48643  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:20:24  

Additional Information
 Earth MOID = 1.97752 au 
 Jupiter MOID = .512878 au 
 T_jup = 2.998 
[ 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 12.9 mag n/a MPO347622  

12307 (1991 UA)          Discovered 1991-Oct-18 by Ueda, S., Kaneda, H. at Kushiro
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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