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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 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389990794421003 2.373e-07  
a 2.522010788793455 1.5855e-08 AU
q 2.171453610808119 5.9823e-07 AU
i 2.268577724827988 8.5738e-06 deg
node 158.828938140073 0.00019131 deg
peri 250.5005089748432 0.0002041 deg
M 309.9837857176333 6.0693e-05 deg
tp 2457003.748408310225
(2014-Dec-12.24840831)
0.00024694 JED
period 1462.91413777546
4.01
1.3795e-05
3.777e-08
d
yr
n .2460841622239184 2.3206e-09 deg/d
Q 2.87256796677879 1.8059e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1131  
   data-arc span      20978 days (57.43 yr)  
   first obs. used      1954-12-21  
   last obs. used      2012-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56558  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 16:23:59  

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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