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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1781938331888653 5.1253e-08  
a 2.324271803359017 1.1166e-08 au
q 1.910100901345677 1.1679e-07 au
i 5.016402168215635 5.4472e-06 deg
node 212.5189264497429 5.2299e-05 deg
peri 173.3897591450412 5.4473e-05 deg
M 94.37937573945207 1.3734e-05 deg
tp 2457261.184735759989
(2015-Aug-26.68473576)
4.9442e-05 JED
period 1294.28166026046
3.54
9.3269e-06
2.554e-08
d
yr
n .2781465665885692 2.0044e-09 deg/d
Q 2.738442705372357 1.3156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1244  
   data-arc span      13404 days (36.70 yr)  
   first obs. used      1979-07-24  
   last obs. used      2016-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49781  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:57:41  

Additional Information
 Earth MOID = .913065 au 
 Jupiter MOID = 2.70805 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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