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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03582661908753612 4.6709e-08  
a 5.234946033540506 8.2201e-08 au
q 5.047395616053042 2.8272e-07 au
i 9.505974442802636 5.4143e-06 deg
node 298.8929577124105 3.1291e-05 deg
peri 162.7379432857111 8.861e-05 deg
M 264.6818965562168 8.4702e-05 deg
tp 2460158.849544088171
(2023-Aug-02.34954409)
0.0010376 TDB
period 4374.885995478116
11.98
0.00010304
2.821e-07
d
yr
n .08228785855725065 1.9382e-09 deg/d
Q 5.422496451027969 8.5146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1667  
   data-arc span      11167 days (30.57 yr)  
   first obs. used      1990-02-24  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:30:10  

Additional Information
 Earth MOID = 4.06551 au 
 Jupiter MOID = .200003 au 
 T_jup = 2.971 
[ 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 10.2   n/a MPO452349  
diameter diameter 47.819 km 1.161 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 28.48 h n/a LCDB (Rev. 2019-August); 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] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

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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