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23115 Valcourt (2000 AS18)
Classification: Main-belt Asteroid          SPK-ID: 2023115
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774758951751193 4.3352e-08  
a 3.186515340916791 2.734e-08 au
q 2.620985678298333 1.4668e-07 au
i 5.100540583462476 4.688e-06 deg
node 11.51440314017212 4.9709e-05 deg
peri 336.4744242039449 5.1188e-05 deg
M 280.2110434726347 1.4214e-05 deg
tp 2459460.982077943998
(2021-Sep-03.48207794)
8.5647e-05 TDB
period 2077.650282379413
5.69
2.6739e-05
7.321e-08
d
yr
n .1732726643425826 2.23e-09 deg/d
Q 3.752045003535248 3.2192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      898  
   data-arc span      11974 days (32.78 yr)  
   first obs. used      1987-09-04  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 19:05:00  

Additional Information
 Earth MOID = 1.61563 au 
 Jupiter MOID = 1.67819 au 
 T_jup = 3.167 
[ 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 14.1   n/a MPO435916  
diameter diameter 6.931 km 0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.101   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23115 Valcourt           Discovered 2000 Jan. 3 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro.
James R. Valcourt (b. 1989) was awarded second place in the 2007 Intel International Science and Engineering Fair for his cellular and molecular biology project. He attends the Wachusett Regional High School, Holden, Massachusetts, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070828/MPCPages.arcLast Updated: 2007-08-30

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Alternate Designations
 2000 AS18 = 1987 RY5 = 1996 FH13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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