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

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1785555806364327 3.3326e-08  
a 2.324154600480066 8.6129e-09 au
q 1.909163826302512 7.7772e-08 au
i 5.021263786051698 3.9031e-06 deg
node 212.4944835794047 3.9086e-05 deg
peri 173.8976906398939 4.0344e-05 deg
M 11.90180767419545 1.0045e-05 deg
tp 2458557.713538181638
(2019-Mar-15.21353818)
3.606e-05 TDB
period 1294.183764034935
3.54
7.194e-06
1.97e-08
d
yr
n .2781676064901416 1.5463e-09 deg/d
Q 2.739145374657621 1.0151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1720  
   data-arc span      14709 days (40.27 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49306  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:58:44  

Additional Information
 Earth MOID = .912915 au 
 Jupiter MOID = 2.70609 au 
 T_jup = 3.549 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO263411  
diameter diameter 4.388 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.253   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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Alternate Designations
 1979 OB9 = 1982 JC2 = 1983 VH7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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