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243509 (2009 WB80)
Classification: Jupiter Trojan          SPK-ID: 2243509
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06555330161081632 1.4278e-07  
a 5.217037383817453 2.7065e-07 au
q 4.875043358681164 7.6244e-07 au
i 30.01254479412165 1.1839e-05 deg
node 51.50168166611505 1.7366e-05 deg
peri 9.056115695182534 9.531e-05 deg
M 316.6539242568658 0.0001109 deg
tp 2459524.560750902855
(2021-Nov-06.06075090)
0.0013702 TDB
period 4352.455605047724
11.92
0.0003387
9.273e-07
d
yr
n .0827119292342679 6.4364e-09 deg/d
Q 5.559031408953742 2.8839e-07 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      6804 days (18.63 yr)  
   first obs. used      1997-10-25  
   last obs. used      2016-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55392  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:33:16  

Additional Information
 Earth MOID = 3.88872 au 
 Jupiter MOID = .120416 au 
 T_jup = 2.728 
[ 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 13.1   n/a MPO341788  
diameter diameter 11.136 km 0.677 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.075   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243509 (2009 WB80)          Discovered 2009-Nov-18 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2009 WB80 = 1997 UO17 = 2007 RL282 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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