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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03695597765654537 8.8879e-08  
a 5.224885678760696 1.9384e-07 AU
q 5.031794920358412 5.122e-07 AU
i 9.508002449798578 1.0166e-05 deg
node 298.9099784398246 4.0913e-05 deg
peri 164.0272008282571 0.00012811 deg
M 98.40634140020856 0.0001162 deg
tp 2455808.066412224271
(2011-Sep-03.56641222)
0.0014356 JED
period 4362.280778770551
11.94
0.00024276
6.646e-07
d
yr
n .08252563699062514 4.5925e-09 deg/d
Q 5.41797643716298 2.0101e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      821  
   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      .48051  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:17:06  

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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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