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JPL Small-Body Database Browser
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20706 (1999 WY3)
Classification: Main-belt Asteroid          SPK-ID: 2020706
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207542211366124 3.6166e-08  
a 2.192692220574795 5.8145e-09 au
q 1.927915379286977 7.9746e-08 au
i 3.614061865052101 3.0415e-06 deg
node 101.5321223278644 6.3941e-05 deg
peri 143.5050081750049 6.5362e-05 deg
M 186.9126284706009 1.4011e-05 deg
tp 2459170.700800447310
(2020-Nov-17.20080045)		 4.6698e-05 TDB
period 1185.94607074593
3.25		 4.7173e-06
1.292e-08		 d
yr
n .3035551184663643 1.2074e-09 deg/d
Q 2.457469061862614 6.5166e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2273  
   data-arc span      23635 days (64.71 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49257  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:46:21  

Additional Information
 Earth MOID = .915631 au 
 Jupiter MOID = 2.55478 au 
 T_jup = 3.659 
[ 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 13.9   n/a MPO302192  
diameter diameter 3.785 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.408   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20706 (1999 WY3)          Discovered 1999-Nov-28 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 WY3 = 1978 GO2 = 1981 EB49 = 1986 WL6 = 1994 CO2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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