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7159 Bobjoseph (1981 EN17)
Classification: Main-belt Asteroid          SPK-ID: 2007159
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .172495332578053 7.0006e-08  
a 2.293388062608583 1.5631e-08 AU
q 1.897789326018378 1.5892e-07 AU
i 4.574653394481063 6.3105e-06 deg
node 211.146647914264 8.1252e-05 deg
peri 157.7709789942551 8.3295e-05 deg
M 64.04470903535959 2.0478e-05 deg
tp 2456774.818736573404
(2014-Apr-27.31873657)
7.1383e-05 JED
period 1268.570910185859
3.47
1.2969e-05
3.551e-08
d
yr
n .2837838997484627 2.9013e-09 deg/d
Q 2.688986799198787 1.8327e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1017  
   data-arc span      22475 days (61.53 yr)  
   first obs. used      1951-11-29  
   last obs. used      2013-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48339  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:54:26  

Additional Information
 Earth MOID = .898214 AU 
 T_jup = 3.573 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO263413  

7159 Bobjoseph           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Robert D. Joseph (b. 1939), a professor of astronomy at the University of Hawaii, is an expert in infrared studies of extragalactic star formation. From 1989 to 2000, he served as division chief for the NASA Infrared Telescope Facility on Mauna Kea.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

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