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23307 Alexramek (2001 AG20)
Classification: Main-belt Asteroid          SPK-ID: 2023307
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237335400486841 2.8565e-08  
a 2.304735349756218 7.9897e-09 au
q 2.019562286055539 6.7067e-08 au
i 7.23584921559221 3.1304e-06 deg
node 157.9575292453175 2.9106e-05 deg
peri 205.63190845 3.2558e-05 deg
M 298.7250496797959 1.4461e-05 deg
tp 2459218.025656705409
(2021-Jan-03.52565671)
5.1292e-05 TDB
period 1277.997550462744
3.50
6.6455e-06
1.819e-08
d
yr
n .2816906807604204 1.4648e-09 deg/d
Q 2.589908413456897 8.9783e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1180  
   data-arc span      11231 days (30.75 yr)  
   first obs. used      1989-11-06  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:59:32  

Additional Information
 Earth MOID = 1.01892 au 
 Jupiter MOID = 2.85704 au 
 T_jup = 3.568 
[ 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 15.5   n/a MPO435918  
diameter diameter 1.802 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.343   0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

23307 Alexramek           Discovered 2001 Jan. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro.
Alex Shlomo Ramek (b. 1990) was awarded first place in the 2007 Intel International Science and Engineering Fair for his medicine and health sciences team project. He attends the Hebrew Academy of the Five Towns and Rockaway, Cedarhurst, New York, 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
 2001 AG20 = 1989 VY4 = 1989 XF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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