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JPL Small-Body Database Browser
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46441 Mikepenston (2002 LE30)
Classification: Main-belt Asteroid          SPK-ID: 2046441
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169601985915991 3.9868e-08  
a 2.625201243447327 1.2048e-08 au
q 2.179961899129531 1.0824e-07 au
i 12.09853625997712 4.195e-06 deg
node 275.2694672195697 2.609e-05 deg
peri 124.7221125138122 3.1061e-05 deg
M 277.1921062704772 1.6658e-05 deg
tp 2458957.864630059246
(2020-Apr-18.36463006)
7.252e-05 TDB
period 1553.611147767444
4.25
1.0695e-05
2.928e-08
d
yr
n .2317182137353506 1.5951e-09 deg/d
Q 3.070440587765122 1.4091e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1220  
   data-arc span      7712 days (21.11 yr)  
   first obs. used      1998-09-20  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53655  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:12  

Additional Information
 Earth MOID = 1.2139 au 
 Jupiter MOID = 2.37173 au 
 T_jup = 3.351 
[ 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 14.2   n/a MPO359048  
rotation period rot_per 11.783 h n/a LCDB (Rev. 2019-January); 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.]

46441 Mikepenston           Discovered 2002 June 10 by C. W. Juels and P. R. Holvorcem at Fountain Hills.
Michael Penston (1943-1990) was a British observational astronomer who spent the majority of his career at the Royal Greenwich Observatory. He studied the power sources of active galaxies and determined the mass of the central object (thought to be a black hole) in the AGN of NGC 4151. The name was suggested by K. Tritton.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

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