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JPL Small-Body Database Browser
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20399 Michaelesser (1998 OO)
Classification: Main-belt Asteroid          SPK-ID: 2020399
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1084089518694789 3.8725e-08  
a 3.164286293576164 2.5877e-08 au
q 2.821249333074614 1.2984e-07 au
i 4.375270955423348 4.0328e-06 deg
node 231.5115072619086 6.6874e-05 deg
peri 35.76652247016101 7.0791e-05 deg
M 340.1859581092183 2.2626e-05 deg
tp 2459113.657321270594
(2020-Sep-21.15732127)
0.00012926 TDB
period 2055.947791064586
5.63
2.522e-05
6.905e-08
d
yr
n .1751017227016203 2.1479e-09 deg/d
Q 3.507323254077714 2.8682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      861  
   data-arc span      24928 days (68.25 yr)  
   first obs. used      1951-01-04  
   last obs. used      2019-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52804  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:40:40  

Additional Information
 Earth MOID = 1.80688 au 
 Jupiter MOID = 1.56741 au 
 T_jup = 3.190 
[ 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 MPO431734  
diameter diameter 8.351 km 0.445 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20399 Michaelesser           Discovered 1998 July 20 by the OCA-DLR Asteroid Survey at Caussols.
Michael Lesser works at the University of Arizona Steward Observatory. He is best known for his pioneering work in high quantum efficiency CCDs and for his work on the detectors for the Hubble Space Telescope and ground-based observatories, many of which are used in the current surveys for minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

[ show close-approach data ]
Alternate Designations
 1998 OO = 1999 TO169 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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