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58931 Palmys (1998 MK47)
Classification: Jupiter Trojan          SPK-ID: 2058931
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0999434473827491 5.5635e-08  
a 5.258593982826175 1.0012e-07 au
q 4.733031971796346 3.3142e-07 au
i 16.41006841478572 4.7102e-06 deg
node 119.5678243516784 1.9641e-05 deg
peri 134.4421481750684 3.2247e-05 deg
M 358.2334312865179 2.3645e-05 deg
tp 2459418.113789673506
(2021-Jul-22.61378967)
0.00028909 TDB
period 4404.563617072771
12.06
0.00012579
3.444e-07
d
yr
n .08173340909519032 2.3343e-09 deg/d
Q 5.784155993856004 1.1013e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1263  
   data-arc span      10383 days (28.43 yr)  
   first obs. used      1993-01-21  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4912  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:25:15  

Additional Information
 Earth MOID = 3.74087 au 
 Jupiter MOID = .222672 au 
 T_jup = 2.909 
[ 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 11.66   n/a MPO614063  
diameter diameter 27.753 km 0.623 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 11.33218 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.058   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

58931 Palmys           Discovered 1998 June 28 by E. W. Elst at the European Southern Observatory.
Palmys, a Trojan fighting for the relief of the city of Troy set off for the centre of the battlefield, with a group of other Trojans from Ascania.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120406/MPCPages.arcLast Updated: 2012-04-09

Alternate Designations
 1998 MK47 = 2000 SZ348 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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