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5126 Achaemenides (1989 CH2)
Classification: Jupiter Trojan          SPK-ID: 2005126
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02518712732338095 6.3111e-08  
a 5.243023462016233 9.3956e-08 au
q 5.110966762518957 3.4285e-07 au
i 29.86204586571664 6.333e-06 deg
node 116.4959032359317 1.0671e-05 deg
peri 351.3136463413082 0.00012329 deg
M 247.8213988681982 0.00012712 deg
tp 2460366.902499774306
(2024-Feb-26.40249977)
0.0015633 TDB
period 4385.0154570995
12.01
0.00011787
3.227e-07
d
yr
n .08209777217937667 2.2068e-09 deg/d
Q 5.37508016151351 9.6322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1429  
   data-arc span      24459 days (66.97 yr)  
   first obs. used      1953-01-09  
   last obs. used      2019-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47779  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:30:20  

Additional Information
 Earth MOID = 4.12845 au 
 Jupiter MOID = .146773 au 
 T_jup = 2.733 
[ 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 10.6   n/a MPO452238  
diameter diameter 51.922 km 3.356 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 53.02 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
geometric albedo albedo 0.050   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

5126 Achaemenides (1989 CH2)          Discovered 1989-Feb-01 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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