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5436 Eumelos (1990 DK)
Classification: Jupiter Trojan          SPK-ID: 2005436
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07718349632920808 4.6798e-08  
a 5.202232596872518 7.8259e-08 au
q 4.800706096328121 2.7392e-07 au
i 7.432258839216947 3.7598e-06 deg
node 253.9705842188329 4.825e-05 deg
peri 220.8412573732907 6.1349e-05 deg
M 241.1014272660632 4.0927e-05 deg
tp 2460431.887487452854
(2024-May-01.38748745)
0.00051011 TDB
period 4333.941809681182
11.87
9.7795e-05
2.677e-07
d
yr
n .0830652592510195 1.8744e-09 deg/d
Q 5.603759097416916 8.4299e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1835  
   data-arc span      12402 days (33.95 yr)  
   first obs. used      1986-12-01  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:22:20  

Additional Information
 Earth MOID = 3.82153 au 
 Jupiter MOID = .172369 au 
 T_jup = 2.977 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457284.5 (2015-Sep-19.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07759207348296487 4.7067e-08  
q 4.795564204478101 2.7615e-07 au
tp 2456109.654205108815
(2012-Jul-01.15420511)
0.00045932 TDB
node 253.9805169544035 4.823e-05 deg
peri 221.4783231629154 6.1179e-05 deg
i 7.434668629355964 3.7612e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1835  
   data-arc span      12402 days (33.95 yr)  
   first obs. used      1986-12-01  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:22:20  

Additional Information
 Jupiter MOID = .172369 au 
 T_jup = 2.977 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.215278903317965E-15 -1.258597736269036E-14 4.561236208436324E-12 -2.189412321672728E-15 3.957344442921715E-13 4.309672977149495E-16
q -1.258597736269036E-14 7.625977246330253E-14 -1.054462600003209E-11 3.653434671021357E-14 -8.932821653239456E-13 3.763044276229663E-16
tp 4.561236208436324E-12 -1.054462600003209E-11 2.109730615631166E-7 3.364302375710195E-11 1.745264027393023E-8 1.525776952049713E-11
node -2.189412321672728E-15 3.653434671021357E-14 3.364302375710195E-11 2.326156624873533E-9 -2.302659475135559E-9 6.712868151587463E-12
peri 3.957344442921715E-13 -8.932821653239456E-13 1.745264027393023E-8 -2.302659475135559E-9 3.742916754897663E-9 -5.326277970039491E-12
i 4.309672977149495E-16 3.763044276229663E-16 1.525776952049713E-11 6.712868151587463E-12 -5.326277970039491E-12 1.41469699680907E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.4   n/a MPO263396  
diameter diameter 37.696 km 0.329 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 38.41 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.]
geometric albedo albedo 0.086   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5436 Eumelos (1990 DK)          Discovered 1990-Feb-20 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1990 DK = 1986 XF2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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