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9538 (1982 UM2)
Classification: Main-belt Asteroid          SPK-ID: 2009538
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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389091114597888 2.4834e-07  
a 2.521654575187533 1.6343e-08 AU
q 2.171373778739722 6.2583e-07 AU
i 2.26869337730502 8.5415e-06 deg
node 158.831294701726 0.00018635 deg
peri 250.5394522788424 0.00020057 deg
M 359.1688101962886 6.3432e-05 deg
tp 2457003.876949187521
(2014-Dec-12.37694919)
0.00025772 JED
period 1462.604211552258
4.00
1.4219e-05
3.893e-08
d
yr
n .2461363075236417 2.3928e-09 deg/d
Q 2.871935371635345 1.8613e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      21737 days (59.51 yr)  
   first obs. used      1954-12-21  
   last obs. used      2014-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53753  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:22:00  

Additional Information
 Earth MOID = 1.18247 AU 
 T_jup = 3.441 
[ 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 13.7 mag n/a MPO299031  

9538 (1982 UM2)          Discovered 1982-Oct-20 by Mrkos, A. at Klet (046)
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1982 UM2 = 1986 VH 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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