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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1073995118834767 4.7649e-08  
a 5.242554124278811 6.7476e-08 au
q 4.67950637030856 2.7363e-07 au
i 10.91413787206887 5.5037e-06 deg
node 156.0260022484113 2.5007e-05 deg
peri 92.5029292550846 3.6883e-05 deg
M 325.3279946976605 2.7506e-05 deg
tp 2459422.769069003645
(2021-Jul-27.26906900)
0.00033479 TDB
period 4384.426672634794
12.00
8.4647e-05
2.318e-07
d
yr
n .0821087970855857 1.5852e-09 deg/d
Q 5.805601878249064 7.4723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1969  
   data-arc span      11681 days (31.98 yr)  
   first obs. used      1988-08-18  
   last obs. used      2020-08-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:41:56  

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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