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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .253225417965273 6.6194e-08  
a 3.98553439671766 5.7863e-08 AU
q 2.976295783293859 2.9083e-07 AU
i 2.345644091550001 7.623e-06 deg
node 352.0203341088763 0.00015687 deg
peri 27.92140285270026 0.00015796 deg
M 332.498737269431 1.6935e-05 deg
tp 2457222.512999098157
(2015-Jul-19.01299910)
0.00013936 JED
period 2906.218541976113
7.96
6.3289e-05
1.733e-07
d
yr
n .1238723085687886 2.6976e-09 deg/d
Q 4.994773010141462 7.2515e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8384 days (22.95 yr)  
   first obs. used      1991-09-13  
   last obs. used      2014-08-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50172  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:59:54  

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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