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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .253225419888077 6.6494e-08  
a 3.9855343995991 5.8715e-08 AU
q 2.976295777782243 2.9137e-07 AU
i 2.34564375857175 7.708e-06 deg
node 352.0203259525489 0.00015944 deg
peri 27.92141101066612 0.0001605 deg
M 332.4987367569002 1.7031e-05 deg
tp 2457222.513003476494
(2015-Jul-19.01300348)
0.00014021 JED
period 2906.218545127796
7.96
6.4221e-05
1.758e-07
d
yr
n .1238723084344538 2.7373e-09 deg/d
Q 4.994773021415957 7.3583e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      787  
   data-arc span      8362 days (22.89 yr)  
   first obs. used      1991-09-13  
   last obs. used      2014-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50409  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:20:21  

Additional Information
 Earth MOID = 1.97902 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 12.8 mag n/a MPO302141  

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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