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12714 Alkimos (1991 GX1)
Classification: Jupiter Trojan          SPK-ID: 2012714
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03695597226938254 8.8548e-08  
a 5.224885688527248 1.9333e-07 AU
q 5.031794957911342 5.0939e-07 AU
i 9.508002242040311 1.0142e-05 deg
node 298.9099786004418 4.0907e-05 deg
peri 164.0271956981479 0.0001279 deg
M 98.40634557045014 0.00011605 deg
tp 2455808.066358348179
(2011-Sep-03.56635835)
0.0014335 JED
period 4362.280791001758
11.94
0.00024212
6.629e-07
d
yr
n .08252563675923513 4.5804e-09 deg/d
Q 5.417976419143155 2.0047e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      8800 days (24.09 yr)  
   first obs. used      1990-02-24  
   last obs. used      2014-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48054  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:32:05  

Additional Information
 Earth MOID = 4.04959 AU 
 T_jup = 2.971 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.1 mag n/a MPO253453  
diameter diameter 61.04 km 5.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 28.48 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Megna, R.; Wasserman, L.H. (2012) Minor Planet Bul. 39, 183-187.]
geometric albedo albedo 0.0360   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

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 | Physical Parameters | Discovery Circumstances ]
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