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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784425562195563 5.8616e-08  
a 2.324361913987571 1.6088e-08 AU
q 1.909596832476248 1.3864e-07 AU
i 5.015929282907092 6.2102e-06 deg
node 212.529718978698 7.7514e-05 deg
peri 173.3395648556061 8.1075e-05 deg
M 287.518495099949 2.7605e-05 deg
tp 2457261.102605765963
(2015-Aug-26.60260577)
0.00010082 JED
period 1294.356928779504
3.54
1.3439e-05
3.679e-08
d
yr
n .2781303920082207 2.8877e-09 deg/d
Q 2.739126995498894 1.8959e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      881  
   data-arc span      12763 days (34.94 yr)  
   first obs. used      1979-07-24  
   last obs. used      2014-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52202  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:09:36  

Additional Information
 Earth MOID = .913737 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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