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160908 (2001 UM138)
Classification: Main-belt Asteroid          SPK-ID: 2160908
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06744149610792258 9.1196e-08  
a 2.16143962639444 1.1426e-08 au
q 2.015668904243449 1.9623e-07 au
i 5.357685997787791 9.5768e-06 deg
node 43.03527587226795 3.9457e-05 deg
peri 197.742670853011 5.7114e-05 deg
M 155.1360397422004 4.2884e-05 deg
tp 2458700.323491354589
(2019-Aug-04.82349135)		 0.00013861 TDB
period 1160.68157606428
3.18		 9.2032e-06
2.52e-08		 d
yr
n .3101625867283198 2.4593e-09 deg/d
Q 2.30721034854543 1.2196e-08 au
   Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      7581 days (20.76 yr)  
   first obs. used      2000-04-06  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:03:18  

Additional Information
 Earth MOID = 1.00261 au 
 Jupiter MOID = 2.67903 au 
 T_jup = 3.688 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.07   n/a E2020-QM9  

160908 (2001 UM138)          Discovered 2001-Oct-23 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 2001 UM138 = 2001 SZ168 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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