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437380 (2013 WY21)
Classification: Main-belt Asteroid          SPK-ID: 2437380
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0590676382048634 5.0769e-08  
a 2.560538998500418 2.4239e-08 au
q 2.409294007327552 1.3395e-07 au
i 21.30212149279443 9.9871e-06 deg
node 217.6688127510478 1.4857e-05 deg
peri 276.2015676451309 0.00011243 deg
M 147.2073936489261 0.00010466 deg
tp 2458388.540555508697
(2018-Sep-27.04055551)
0.00043718 TDB
period 1496.564775423401
4.10
2.1251e-05
5.818e-08
d
yr
n .2405508975701706 3.4158e-09 deg/d
Q 2.711783989673283 2.5671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      97  
   data-arc span      5844 days (16.00 yr)  
   first obs. used      2003-05-01  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52255  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 15:49:40  

Additional Information
 Earth MOID = 1.49426 au 
 Jupiter MOID = 2.38722 au 
 T_jup = 3.337 
[ 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 16.9   n/a MPO434609  

437380 (2013 WY21)          Discovered 2003-May-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-06-04

Alternate Designations
 2013 WY21 = 2003 KH13 = 2007 GC59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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