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15622 Westrich (2000 HY20)
Classification: Main-belt Asteroid          SPK-ID: 2015622
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06204161572438429 3.3657e-08  
a 2.254240321099073 6.5496e-09 au
q 2.114383609347032 7.6625e-08 au
i 3.688319966224257 3.8589e-06 deg
node 150.0879019445404 5.1693e-05 deg
peri 64.40955155978908 5.97e-05 deg
M 340.4794684442925 3.0062e-05 deg
tp 2459067.532881133305
(2020-Aug-06.03288113)
0.00010324 TDB
period 1236.228487893521
3.38
5.3877e-06
1.475e-08
d
yr
n .2912083029355069 1.2691e-09 deg/d
Q 2.394097032851115 6.9559e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1526  
   data-arc span      9901 days (27.11 yr)  
   first obs. used      1993-03-20  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:13:14  

Additional Information
 Earth MOID = 1.11086 au 
 Jupiter MOID = 2.56895 au 
 T_jup = 3.619 
[ 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 15.1   n/a MPO458970  
diameter diameter 2.406 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.335   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15622 Westrich           Discovered 2000 Apr. 27 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Named in honor of Bradford J. Westrich for achievement as a finalist in the 2001 Discovery Young Scientist Challenge (DYSC), a middle school science competition. Bradford is a student at the Edgewood Middle School, Moriarty, New Mexico.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011002/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 2000 HY20 = 1994 PQ23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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