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JPL Small-Body Database Browser
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27556 Williamprem (2000 JO54)
Classification: Main-belt Asteroid          SPK-ID: 2027556
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05092602147870443 3.1263e-08  
a 2.475943180176342 9.7897e-09 au
q 2.34985324460263 7.8729e-08 au
i 4.381573675173089 3.6193e-06 deg
node 94.77604566613745 6.8977e-05 deg
peri 359.5707626479343 0.00010278 deg
M 81.70997086356027 7.4087e-05 deg
tp 2458277.515268278500
(2018-Jun-08.01526828)
0.00029308 TDB
period 1423.014868208626
3.90
8.4398e-06
2.311e-08
d
yr
n .2529840046247647 1.5004e-09 deg/d
Q 2.602033115750054 1.0288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1646  
   data-arc span      10370 days (28.39 yr)  
   first obs. used      1990-12-18  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49553  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:28:18  

Additional Information
 Earth MOID = 1.36666 au 
 Jupiter MOID = 2.47566 au 
 T_jup = 3.475 
[ 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 14.1   n/a MPO337491  
rotation period rot_per 81.362 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.]

27556 Williamprem           Discovered 2000 May 6 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
William Prem mentored a finalist in the 2011 Broadcom MASTERS, a math and science competition for middle-school students. He teaches at the Central Middle School, Eden Prairie, Minnesota.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111210/MPCPages.arcLast Updated: 2011-12-12

Alternate Designations
 2000 JO54 = 1996 LP4 = 1999 BF21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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