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5285 Krethon (1989 EO11)
Classification: Jupiter Trojan          SPK-ID: 2005285
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05054019579988564 2.7722e-08  
a 5.183647066469678 8.3129e-08 au
q 4.921664528772798 1.9145e-07 au
i 25.15461866494018 2.1878e-07 deg
node 144.2718282023599 2.0695e-06 deg
peri 256.736993388671 2.4665e-05 deg
M 13.65135465881904 2.4872e-05 deg
tp 2459233.034987301035
(2021-Jan-18.53498730)
0.0002994 TDB
period 4310.737362142359
11.80
0.00010369
2.839e-07
d
yr
n .08351239469181822 2.0089e-09 deg/d
Q 5.445629604166559 8.733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2261  
   data-arc span      23733 days (64.98 yr)  
   first obs. used      1956-03-15  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41262  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:21:31  

Additional Information
 Earth MOID = 4.01296 au 
 Jupiter MOID = .0746444 au 
 T_jup = 2.808 
[ 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 10.19   n/a MPCxxxxx  
diameter diameter 49.606 km 0.749 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 12.04 h n/a LCDB (Rev. 2020-October); 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:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.079   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5285 Krethon (1989 EO11)          Discovered 1989-Mar-09 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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