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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389091141681089 2.4745e-07  
a 2.521654575466042 1.6189e-08 AU
q 2.171373772150095 6.2375e-07 AU
i 2.26869332044385 8.5407e-06 deg
node 158.8312990504986 0.00018614 deg
peri 250.5394472968101 0.00020033 deg
M 359.1688105640355 6.3386e-05 deg
tp 2457003.876947694002
(2014-Dec-12.37694769)
0.00025753 JED
period 1462.604211794568
4.00
1.4085e-05
3.856e-08
d
yr
n .2461363074828642 2.3702e-09 deg/d
Q 2.871935378781989 1.8437e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1142  
   data-arc span      21793 days (59.67 yr)  
   first obs. used      1954-12-21  
   last obs. used      2014-08-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53739  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:14  

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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