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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138999074102115 2.4843e-07  
a 2.522010800292742 1.6418e-08 AU
q 2.171453634176517 6.2611e-07 AU
i 2.26859321683027 8.5409e-06 deg
node 158.829516272214 0.00018635 deg
peri 250.4999026321886 0.00020053 deg
M 309.9838012689249 6.3245e-05 deg
tp 2457003.748346505301
(2014-Dec-12.24834651)
0.00025729 JED
period 1462.914147780851
4.01
1.4285e-05
3.911e-08
d
yr
n .2460841605408611 2.4029e-09 deg/d
Q 2.872567966408967 1.87e-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 = 1.18171 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 13.6 mag n/a MPO231478  

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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