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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1207721605394507 1.5343e-08  
a 2.192335979743938 5.2058e-09 au
q 1.92756282684189 3.4342e-08 au
i 3.614143612077081 4.5786e-07 deg
node 101.5317965635876 3.8528e-06 deg
peri 143.6625011245595 6.2556e-06 deg
M 8.912395789701307 6.6865e-06 deg
tp 2459171.147097096116
(2020-Nov-17.64709710)
2.1967e-05 TDB
period 1185.657066263721
3.25
4.2231e-06
1.156e-08
d
yr
n .3036291101730141 1.0815e-09 deg/d
Q 2.457109132645987 5.8345e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2722  
   data-arc span      23853 days (65.31 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47599  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:27:34  

Additional Information
 Earth MOID = .913907 au 
 Jupiter MOID = 2.55397 au 
 T_jup = 3.660 
[ 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 13.98   n/a E2021B10  
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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