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7004 Markthiemens (1979 OB9)
Classification: Main-belt Asteroid          SPK-ID: 2007004
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782516893420061 5.1822e-08  
a 2.323972639413932 1.131e-08 au
q 1.909720590453798 1.1838e-07 au
i 5.016391031658809 5.7298e-06 deg
node 212.5244666719022 5.4095e-05 deg
peri 173.3357430632608 5.6347e-05 deg
M 38.78428611157506 1.4245e-05 deg
tp 2457261.088614245044
(2015-Aug-26.58861424)
5.1226e-05 JED
period 1294.03178203158
3.54
9.4468e-06
2.586e-08
d
yr
n .2782002768392704 2.031e-09 deg/d
Q 2.738224688374066 1.3327e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      13295 days (36.40 yr)  
   first obs. used      1979-07-24  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50387  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:02:12  

Additional Information
 Earth MOID = .912469 au 
 Jupiter MOID = 2.70955 au 
 T_jup = 3.549 
[ 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 MPO263411  

7004 Markthiemens           Discovered 1979 July 24 by S. J. Bus at Siding Spring.
Mark H. Thiemens (b. 1950) is a professor of chemistry at the University of California, San Diego. He is known for his seminal work on the "mass-independent isotope effect" and for his studies of the early atmosphere of Mars based on isotopic measurements from Martian meteorites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1979 OB9 = 1982 JC2 = 1983 VH7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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