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4661 Yebes (1982 WM)
Classification: Main-belt Asteroid          SPK-ID: 2004661
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1592611013792336 3.6688e-08  
a 2.435452616560401 7.1141e-09 au
q 2.047579750490055 9.103e-08 au
i 4.705785179556639 3.4426e-06 deg
node 102.4937846999723 4.8326e-05 deg
peri 286.2496908512925 4.9532e-05 deg
M 308.5814541944051 1.1984e-05 deg
tp 2459198.782891198903
(2020-Dec-15.28289120)
4.6538e-05 TDB
period 1388.250867721697
3.80
6.0827e-06
1.665e-08
d
yr
n .2593191247852829 1.1362e-09 deg/d
Q 2.823325482630746 8.2471e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2271  
   data-arc span      20814 days (56.99 yr)  
   first obs. used      1963-09-27  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:54:35  

Additional Information
 Earth MOID = 1.05866 au 
 Jupiter MOID = 2.62302 au 
 T_jup = 3.483 
[ 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 13.3   n/a MPO492806  
diameter diameter 5.996 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.217   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4661 Yebes           Discovered 1982 Nov. 17 by M. de Pascual at Yebes.
The village of Yebes, in the Alcarria region, is beautifully described by the Spanish Nobel laureate Camilo José Cela in one of his early books. This was the first minor planet discovered at the Centro Astronómico de Yebes, an optical and radio observatory located 70 km from Madrid.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1982 WM = 1963 SB1 = 1986 VE6 = 1988 EP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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