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25486 Michaelwham (1999 XF81)
Classification: Main-belt Asteroid          SPK-ID: 2025486
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1595009420728458 4.1243e-08  
a 2.539530368828412 1.2098e-08 au
q 2.134472882577679 1.0495e-07 au
i 6.030329342700393 4.1754e-06 deg
node 97.32464501412571 3.1231e-05 deg
peri 170.745326578436 3.3177e-05 deg
M 190.1714779592918 1.3239e-05 deg
tp 2459697.827306887461
(2022-Apr-28.32730689)
5.6784e-05 TDB
period 1478.184155776329
4.05
1.0563e-05
2.892e-08
d
yr
n .243542050287321 1.7403e-09 deg/d
Q 2.944587855079146 1.4028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      8601 days (23.55 yr)  
   first obs. used      1997-04-06  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52717  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:34:19  

Additional Information
 Earth MOID = 1.11866 au 
 Jupiter MOID = 2.14732 au 
 T_jup = 3.421 
[ 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 14.9   n/a MPO406114  
diameter diameter 2.373 km 0.579 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.497   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

25486 Michaelwham           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Michael Tyler Wham (b. 1990) is a finalist in the 2009 Intel Science Talent Search (STS), a science competition for high school seniors, for his zoology project. He attends the Sterling Ridge Home School, Woodlands, Texas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090311/MPCPages.arcLast Updated: 2009-03-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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