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JPL Small-Body Database Browser
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249503 (2009 YW20)
Classification: Main-belt Asteroid          SPK-ID: 2249503
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09000960182462903 6.9723e-08  
a 3.195626258695801 4.0177e-08 au
q 2.907989211570263 2.2522e-07 au
i 8.555268751718165 7.1348e-06 deg
node 317.3214262661986 3.4841e-05 deg
peri 196.0135523219397 4.5467e-05 deg
M 189.1166919449419 2.9558e-05 deg
tp 2459590.943122242173
(2022-Jan-11.44312224)
0.00017931 TDB
period 2086.567307629016
5.71
3.935e-05
1.077e-07
d
yr
n .1725321769797453 3.2537e-09 deg/d
Q 3.483263305821338 4.3793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      238  
   data-arc span      9769 days (26.75 yr)  
   first obs. used      1993-01-26  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54649  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:46:30  

Additional Information
 Earth MOID = 1.92035 au 
 Jupiter MOID = 1.54447 au 
 T_jup = 3.172 
[ 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 15.5   n/a MPO454850  
diameter diameter 4.283 km 0.621 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249503 (2009 YW20)          Discovered 2009-Dec-27 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2009 YW20 = 2008 YL3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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