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4716 Urey (1989 UL5)
Classification: Main-belt Asteroid          SPK-ID: 2004716
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133774177386532 3.2075e-08  
a 3.181256839903553 1.6776e-08 au
q 2.755686823090177 9.7758e-08 au
i 10.13672934166311 5.0043e-06 deg
node 20.13794482618029 1.8803e-05 deg
peri 100.926008149076 2.6915e-05 deg
M 65.440016575309 1.8455e-05 deg
tp 2458623.763735775071
(2019-May-20.26373577)
0.00010581 TDB
period 2072.509486071045
5.67
1.6394e-05
4.488e-08
d
yr
n .1737024618799063 1.374e-09 deg/d
Q 3.606826856716929 1.9021e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2295  
   data-arc span      24112 days (66.02 yr)  
   first obs. used      1954-07-29  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:19:06  

Additional Information
 Earth MOID = 1.79412 au 
 Jupiter MOID = 1.55203 au 
 T_jup = 3.161 
[ 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 11.6   n/a MPO279564  
diameter diameter 15.409 km 0.328 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.9260 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Shevchenko, V.G.; Velichko, F.P.; Checha, V.A.; Krugly, Y.N. (2014) Minor Planet Bull. 41, 195-198.]
[Clark, M. (2015) Minor Planet Bull. 42, 15-20.]
geometric albedo albedo 0.155   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4716 Urey           Discovered 1989 Oct. 30 by S. J. Bus at Cerro Tololo.
Winner of the 1934 Nobel Prize in chemistry for his discovery of deuterium, Harold Urey (1893-1981) was also one of the founders of planetary science as we know it today. His classic book The Planets (1952) discussed planetary objects and meteorites in the context of chemical and physical relationships.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1989 UL5 = 1969 EA1 = 1978 RN16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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