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120452 Schombert (1988 NA)
Classification: Main-belt Asteroid          SPK-ID: 2120452
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .381690458392051 4.4389e-08  
a 2.764106295682572 1.2107e-08 au
q 1.709073296639137 1.2648e-07 au
i 30.23112321382497 6.378e-06 deg
node 169.6089303078741 9.3476e-06 deg
peri 81.57409315793915 1.4969e-05 deg
M 349.4060801844962 6.6305e-06 deg
tp 2459049.895196536547
(2020-Jul-19.39519654)
3.0906e-05 TDB
period 1678.535524417796
4.60
1.1028e-05
3.019e-08
d
yr
n .2144726726143415 1.4091e-09 deg/d
Q 3.819139294726007 1.6727e-08 au
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      13663 days (37.41 yr)  
   first obs. used      1983-03-07  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47054  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:09:31  

Additional Information
 Earth MOID = .937516 au 
 Jupiter MOID = 2.05823 au 
 T_jup = 3.047 
[ 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 15.3   n/a MPO432706  
diameter diameter 5.023 km 0.627 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120452 Schombert           Discovered 1988 July 6 by A. Maury at Palomar.
James Schombert (b. 1957) is an observational cosmologist, who started working during the second Palomar Observatory Sky Survey. He is now an astronomy professor at the University of Oregon working on galaxy formation and evolution and the interaction with dark matter using telescopes such as HST and Spitzer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2020-08-07Last Updated: 2020-08-24

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Alternate Designations
 1988 NA = 2002 MR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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