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JPL Small-Body Database Browser
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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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1001324617324167 6.2878e-08  
a 5.260604720299757 1.3275e-07 au
q 4.733847419454971 3.973e-07 au
i 16.40992754638953 6.2958e-06 deg
node 119.5685028330541 2.1248e-05 deg
peri 134.1339262292573 4.2601e-05 deg
M 326.1367804203928 4.2343e-05 deg
tp 2459415.050724312534
0.00052443 TDB
period 4407.090129208654
n .08168655267884034 3.092e-09 deg/d
Q 5.787362021144542 1.4604e-07 au
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      9867 days (27.01 yr)  
   first obs. used      1993-01-21  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56663  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:39:57  

Additional Information
 Earth MOID = 3.74196 au 
 Jupiter MOID = .219877 au 
 T_jup = 2.908 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO319771  
diameter diameter 27.753 km 0.623 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  
rotation period rot_per 11.33218 h n/a LCDB (Rev. 2019-August); 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] (  

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 ]
FirstGov 2020-Feb-29 13:17 UT
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