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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1072211017267607 2.6721e-08  
a 5.240875460878128 6.3072e-08 au
q 4.67894301995003 1.7105e-07 au
i 10.91462892948129 1.9175e-07 deg
node 156.029977819452 3.9068e-06 deg
peri 92.65216017302239 1.3065e-05 deg
M 341.6173130946535 1.5731e-05 deg
tp 2459424.274541493623
(2021-Jul-28.77454149)
0.00019249 TDB
period 4382.321004133195
12.00
7.9109e-05
2.166e-07
d
yr
n .0821482496741944 1.4829e-09 deg/d
Q 5.802807901806225 6.9834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2102  
   data-arc span      11901 days (32.58 yr)  
   first obs. used      1988-08-18  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 22:23:53  

Additional Information
 Earth MOID = 3.68679 au 
 Jupiter MOID = .180607 au 
 T_jup = 2.952 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456871.5 (2014-Aug-02.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1052796788764761 2.6781e-08  
q 4.705480280952696 1.7249e-07 au
tp 2455016.974317323549
(2009-Jul-04.47431732)
0.00019001 TDB
node 156.0283129398159 3.9068e-06 deg
peri 91.73588797688717 1.3159e-05 deg
i 10.90517107074213 1.9153e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2102  
   data-arc span      11901 days (32.58 yr)  
   first obs. used      1988-08-18  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44484  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 22:23:53  

Additional Information
 Jupiter MOID = .180607 au 
 T_jup = 2.952 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.172447804637123E-16 -4.401299056974193E-15 -9.203028934070265E-13 3.200231243219039E-14 -1.177837946495337E-13 -1.617517830457942E-15
q -4.401299056974193E-15 2.975358339106836E-14 3.160965306540596E-12 -1.769616352367871E-13 6.685414436880697E-13 9.16852317264416E-15
tp -9.203028934070265E-13 3.160965306540596E-12 3.610550836258311E-8 -2.813444231009257E-12 2.347385832759843E-9 2.555678203425852E-12
node 3.200231243219039E-14 -1.769616352367871E-13 -2.813444231009257E-12 1.526285748193155E-11 -1.436369747718216E-11 -2.059313515940642E-13
peri -1.177837946495337E-13 6.685414436880697E-13 2.347385832759843E-9 -1.436369747718216E-11 1.73161713294512E-10 3.756814941806583E-13
i -1.617517830457942E-15 9.16852317264416E-15 2.555678203425852E-12 -2.059313515940642E-13 3.756814941806583E-13 3.668366719252049E-14

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.54   n/a E2021B10  
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. 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:
[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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