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22942 Alexacourtis (1999 TZ205)
Classification: Main-belt Asteroid          SPK-ID: 2022942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1019318808673186 3.9808e-08  
a 2.713431324961416 1.3265e-08 au
q 2.436846166403799 1.1162e-07 au
i 4.167615347197057 5.0056e-06 deg
node 358.4475057802791 5.6951e-05 deg
peri 300.1023430041806 6.1944e-05 deg
M 317.1845303918365 2.3531e-05 deg
tp 2459194.666762558488
(2020-Dec-11.16676256)
0.00010671 TDB
period 1632.588294856121
4.47
1.1971e-05
3.277e-08
d
yr
n .2205087474498441 1.6169e-09 deg/d
Q 2.990016483519034 1.4617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1307  
   data-arc span      10365 days (28.38 yr)  
   first obs. used      1992-01-31  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:03:52  

Additional Information
 Earth MOID = 1.42458 au 
 Jupiter MOID = 2.19995 au 
 T_jup = 3.351 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO337452  
diameter diameter 3.681 km 1.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.226   0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22942 Alexacourtis           Discovered 1999 Oct. 13 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Alexandra Maria Courtis (b. 1990) is a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors, for her chemistry project. She attends the Davis Senior High School, Davis, California.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070303/MPCPages.arcLast Updated: 2010-04-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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