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90503 Japhethboyce (2004 EP10)
Classification: Main-belt Asteroid          SPK-ID: 2090503
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022596909968324 4.6441e-08  
a 2.396968718055484 8.7264e-09 au
q 1.912158565812509 1.1413e-07 au
i 2.137970793179549 5.0111e-06 deg
node 189.2002899467869 9.702e-05 deg
peri 131.5200823802143 9.7467e-05 deg
M 9.482586946423437 9.3919e-06 deg
tp 2458964.796046439673
(2020-Apr-25.29604644)
3.5297e-05 TDB
period 1355.476449025942
3.71
7.4021e-06
2.027e-08
d
yr
n .2655892695580946 1.4504e-09 deg/d
Q 2.88177887029846 1.0491e-08 au
  Orbit Determination Parameters
   # obs. used (total)      856  
   data-arc span      10434 days (28.57 yr)  
   first obs. used      1992-01-10  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:13:03  

Additional Information
 Earth MOID = .900254 au 
 Jupiter MOID = 2.43752 au 
 T_jup = 3.499 
[ 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 15.8   n/a MPO436405  

90503 Japhethboyce           Discovered 2004 Mar. 15 by the Catalina Sky Survey.
Japheth Boyce (b. 1956), a paleontologist in South Dakota, is best known for his exquisite fossil preparation seen in museums around the world. He specializes in White River Badlands as well as Hell Creek material. He also appeared in the TV program "Walking with Prehistoric Beasts".
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 2015-12-25Last Updated: 2016-01-04

Alternate Designations
 2004 EP10 = 1997 LK7 = 2000 DG13 = 2002 YT22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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