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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03605190766211622 4.4953e-08  
a 5.236285334724563 7.8255e-08 au
q 5.04750725934458 2.7962e-07 au
i 9.506012887614796 4.5808e-06 deg
node 298.8937496816543 3.1156e-05 deg
peri 162.3498589076774 8.4996e-05 deg
M 281.5494170330933 8.0349e-05 deg
tp 2460154.233543411671
(2023-Jul-28.73354341)
0.00098174 TDB
period 4376.564999816972
11.98
9.811e-05
2.686e-07
d
yr
n .08225629003911862 1.844e-09 deg/d
Q 5.425063410104547 8.1076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1956  
   data-arc span      11285 days (30.90 yr)  
   first obs. used      1990-02-24  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41866  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:07:29  

Additional Information
 Earth MOID = 4.06552 au 
 Jupiter MOID = .199391 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 10.29   n/a E2021B10  
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. 2020-October); 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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