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JPL Small-Body Database Browser
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65225 (2002 EK44)
Classification: Jupiter Trojan          SPK-ID: 2065225
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08152567746006913 8.3264e-08  
a 5.287576427710407 2.0352e-07 au
q 4.856503177319424 5.81e-07 au
i 6.963189804779605 8.5135e-06 deg
node 204.0899335376394 6.596e-05 deg
peri 206.8007496601602 9.0848e-05 deg
M 302.3138560462403 6.8727e-05 deg
tp 2459712.127007900794
(2022-May-12.62700790)
0.00087271 TDB
period 4441.02700034241
12.16
0.00025641
7.02e-07
d
yr
n .08106233084650093 4.6802e-09 deg/d
Q 5.718649678101391 2.2012e-07 au
  Orbit Determination Parameters
   # obs. used (total)      384  
   data-arc span      8418 days (23.05 yr)  
   first obs. used      1996-09-12  
   last obs. used      2019-09-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60779  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 07:38:39  

Additional Information
 Earth MOID = 3.86868 au 
 Jupiter MOID = .0936465 au 
 T_jup = 2.979 
[ 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 12.4   n/a MPO290914  
diameter diameter 16.654 km 0.234 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 13.43 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D. (2016) http://www.planetarysciences.org/PHP/CS3_Lightcurves.php]
geometric albedo albedo 0.077   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

65225 (2002 EK44)          Discovered 2002-Mar-13 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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