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19721 Wray (1999 VW11)
Classification: Main-belt Asteroid          SPK-ID: 2019721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1038423260400887 7.073e-09  
a 2.977859376035044 1.4754e-08 au
q 2.668631531807278 1.7865e-08 au
i 13.93204182207842 6.9605e-07 deg
node 46.02349780748629 5.2497e-07 deg
peri 329.9960574820211 1.3853e-05 deg
M 67.87439301357868 1.1609e-05 deg
tp 2459042.618252965446
(2020-Jul-12.11825297)
6.0434e-05 TDB
period 1876.958647821025
5.14
1.3949e-05
3.819e-08
d
yr
n .1917996437576963 1.4254e-09 deg/d
Q 3.28708722026281 1.6286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2295  
   data-arc span      24180 days (66.20 yr)  
   first obs. used      1955-01-29  
   last obs. used      2021-04-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41192  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:15:51  

Additional Information
 Earth MOID = 1.68043 au 
 Jupiter MOID = 2.17844 au 
 T_jup = 3.208 
[ 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 12.68   n/a E2021B10  
diameter diameter 10.259 km 1.718 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.168   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

19721 Wray           Discovered 1999 Nov. 10 by C. W. Juels at Fountain Hills.
James D. Wray (b. 1936) directed the Institute of Meteoritics (1966-1967) and was deputy P.I. for NASA Skylab Experiment S-019 (1969-1980). Author of The Color Atlas of Galaxies (1988), and founder of SciTech Astronomical Research (1989), he currently develops state-of-the-art automated observatories.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1999 VW11 = 1984 UR4 = 1989 SU14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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