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

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Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB
Reference: MPO169582 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1782522 n/a  
a 2.3246352 n/a AU
q 1.9102639 n/a AU
i 5.01582 n/a deg
node 212.54152 n/a deg
peri 173.51457 n/a deg
M 146.60691 n/a deg
tp 2454673.2912704
(2008-Jul-25.79127040)		 n/a JED
period 1294.5852462
3.54		 n/a
n/a		 d
yr
n 0.27808134 n/a deg/d
Q 2.7390065 n/a AU
   Orbit Determination Parameters
   # obs. used (total)      540  
   first obs. used      1979-??-??  
   last obs. used      2010-01-18  
   # oppositions      16  
   planetary ephem.      DE403  
   quality code      0  
   fit RMS      0.58  
   data source      MPC:mpn  
   producer      MPC  

Additional Information
 T_jup = 3.549 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a PDS3 (MPC 27292)  

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

Alternate Designations
 1979 OB9 = 1982 JC2 = 1983 VH7 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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