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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1595009432787216 4.1199e-08  
a 2.539530369070545 1.209e-08 au
q 2.134472879718833 1.0485e-07 au
i 6.030329308210074 4.1747e-06 deg
node 97.32464547668262 3.1216e-05 deg
peri 170.745326089164 3.3162e-05 deg
M 190.171477826946 1.3237e-05 deg
tp 2459697.827307530613
(2022-Apr-28.32730753)
5.6773e-05 TDB
period 1478.184155987738
4.05
1.0556e-05
2.89e-08
d
yr
n .2435420502524899 1.7392e-09 deg/d
Q 2.944587858422257 1.4019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1035  
   data-arc span      8623 days (23.61 yr)  
   first obs. used      1997-04-06  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52741  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:48:49  

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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