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12714 Alkimos (1991 GX1)
Classification: Jupiter Trojan          SPK-ID: 2012714
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03563309589458193 5.006e-08  
a 5.232851287993126 8.9614e-08 au
q 5.046388596245981 2.8886e-07 au
i 9.506677857065249 6.1832e-06 deg
node 298.8975956544056 3.133e-05 deg
peri 163.5604908551277 9.4243e-05 deg
M 230.884044013771 9.1412e-05 deg
tp 2460168.634935664294
0.0011264 TDB
period 4372.260364933953
n .08233727407618328 2.1151e-09 deg/d
Q 5.419313979740272 9.2807e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1431  
   data-arc span      10878 days (29.78 yr)  
   first obs. used      1990-02-24  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:27:33  

Additional Information
 Earth MOID = 4.06456 au 
 Jupiter MOID = .199063 au 
 T_jup = 2.971 
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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 10.2   n/a MPO452349  
diameter diameter 47.819 km 1.161 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  
rotation period rot_per 28.48 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Megna, R.; Wasserman, L.H. (2012) Minor Planet Bull. 39, 183-187.]
geometric albedo albedo 0.070   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  

12714 Alkimos           Discovered 1991 Apr. 15 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Akimos was a son of Ares. Together with Automedon, he was in charge of Achilles' horses. After the death of Patroclus, they were the most honored of the companions of Achilles.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1991 GX1 = 1990 EY1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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