Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
27556 Williamprem (2000 JO54)
Classification: Main-belt Asteroid          SPK-ID: 2027556
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05147080271553496 4.9164e-08  
a 2.476086944210094 1.5403e-08 au
q 2.348640761598145 1.2153e-07 au
i 4.381487542417501 5.3033e-06 deg
node 94.78418562810799 8.6506e-05 deg
peri 359.9069089732125 0.00012315 deg
M 188.460513139405 8.6374e-05 deg
tp 2458278.623614279003
(2018-Jun-09.12361428)
0.00034117 JED
period 1423.138809659805
3.90
1.328e-05
3.636e-08
d
yr
n .252961972195851 2.3604e-09 deg/d
Q 2.603533126822044 1.6196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1120  
   data-arc span      8966 days (24.55 yr)  
   first obs. used      1990-12-18  
   last obs. used      2015-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53819  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 20:49:09  

Additional Information
 Earth MOID = 1.36376 au 
 Jupiter MOID = 2.47796 au 
 T_jup = 3.475 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1 mag n/a MPO337491  
rotation period rot_per 81.3622 h n/a LCDB (Rev. 2016-February); 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. (2016) 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 | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Apr-29 10:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin