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129158 Michaelmellman (2005 FD8)
Classification: Main-belt Asteroid          SPK-ID: 2129158
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03183621507818458 1.0953e-07  
a 2.953141449294481 3.0512e-08 au
q 2.859124602958441 3.2559e-07 au
i 11.13792104035038 5.5693e-06 deg
node 96.88960112889653 6.2556e-05 deg
peri 121.1027992477743 0.00015445 deg
M 335.5935211618506 0.0001433 deg
tp 2459126.168788282417
(2020-Oct-03.66878828)
0.00073792 TDB
period 1853.63747395446
5.07
2.8728e-05
7.865e-08
d
yr
n .1942127331036277 3.01e-09 deg/d
Q 3.047158295630522 3.1484e-08 au
  Orbit Determination Parameters
   # obs. used (total)      422  
   data-arc span      7306 days (20.00 yr)  
   first obs. used      2000-04-27  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62652  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:42:19  

Additional Information
 Earth MOID = 1.86363 au 
 Jupiter MOID = 2.01153 au 
 T_jup = 3.240 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO338148  
diameter diameter 3.476 km 0.718 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.791 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.140   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129158 Michaelmellman           Discovered 2005 Mar. 30 by the Catalina Sky Survey.
Michael J. Mellman (b. 1977) is the Lockheed Martin electrical ground equipment lead and test engineer for the OSIRIS-REx Asteroid Sample Return Mission. He was also a shop lead for an electronics laboratory and a surveyor.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-08-18Last Updated: 2016-08-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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