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5638 Deikoon (1988 TA3)
Classification: Jupiter Trojan          SPK-ID: 2005638
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1073995117474077 4.765e-08  
a 5.242554124777489 6.7491e-08 au
q 4.679506371467029 2.7365e-07 au
i 10.91413780223795 5.5064e-06 deg
node 156.0260023365772 2.5008e-05 deg
peri 92.50292940083024 3.6892e-05 deg
M 325.3279944056671 2.7523e-05 deg
tp 2459422.769072620072
(2021-Jul-27.26907262)
0.00033501 TDB
period 4384.426673260372
12.00
8.4666e-05
2.318e-07
d
yr
n .08210879707387028 1.5856e-09 deg/d
Q 5.805601878087949 7.474e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1965  
   data-arc span      11673 days (31.96 yr)  
   first obs. used      1988-08-18  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44992  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:31:07  

Additional Information
 Earth MOID = 3.68889 au 
 Jupiter MOID = .1823 au 
 T_jup = 2.952 
[ 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 10.5   n/a MPO358685  
diameter diameter 41.455 km 0.482 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 19.40 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:
[Molnar, L.A.; Haegert, M.J.; Hoogenboom, K.M. (2008) Minor Planet Bull. 35, 82-84.]
geometric albedo albedo 0.071   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5638 Deikoon (1988 TA3)          Discovered 1988-Oct-10 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1988 TA3 = 1988 RJ1 = 1989 TO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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