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249962 (2001 UM54)
Classification: Main-belt Asteroid          SPK-ID: 2249962
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08819680459897375 4.7386e-08  
a 2.765856475067887 2.1728e-08 au
q 2.521916771987518 1.3243e-07 au
i 10.50019408460464 7.2954e-06 deg
node 301.5917056979021 2.7734e-05 deg
peri 81.32587777338318 5.0569e-05 deg
M 21.27714401950222 4.1177e-05 deg
tp 2458901.198977724756
(2020-Feb-21.69897772)
0.00019201 TDB
period 1680.130001767224
4.60
1.9798e-05
5.42e-08
d
yr
n .2142691337106881 2.5249e-09 deg/d
Q 3.009796178148256 2.3645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6694 days (18.33 yr)  
   first obs. used      2001-09-26  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:28:28  

Additional Information
 Earth MOID = 1.55039 au 
 Jupiter MOID = 2.40272 au 
 T_jup = 3.309 
[ 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 16.0   n/a MPO494363  

249962 (2001 UM54)          Discovered 2001-Oct-18 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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