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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389090330851869 2.3844e-07  
a 2.521654566310491 1.1414e-08 AU
q 2.171373968729454 6.0142e-07 AU
i 2.268695342389459 7.1894e-06 deg
node 158.8313297236837 0.00018079 deg
peri 250.5394339298919 0.00019433 deg
M 359.1688018539729 6.0331e-05 deg
tp 2457003.876983062761
(2014-Dec-12.37698306)
0.00024511 JED
period 1462.604203828995
4.00
9.9304e-06
2.719e-08
d
yr
n .2461363088233613 1.6712e-09 deg/d
Q 2.871935163891528 1.2999e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1264  
   data-arc span      21947 days (60.09 yr)  
   first obs. used      1954-12-21  
   last obs. used      2015-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52682  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:26:29  

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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