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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02481953010157235 6.3533e-08  
a 5.242772273310683 9.4871e-08 au
q 5.11264912905756 3.4337e-07 au
i 29.86255033715348 6.3555e-06 deg
node 116.4970780368362 1.0709e-05 deg
peri 352.1451541104317 0.00012491 deg
M 214.0882305845296 0.00012835 deg
tp 2460377.664957203066
(2024-Mar-08.16495720)
0.0015826 TDB
period 4384.700337444271
12.00
0.00011902
3.259e-07
d
yr
n .0821036723822807 2.2286e-09 deg/d
Q 5.372895417563806 9.7226e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1409  
   data-arc span      24425 days (66.87 yr)  
   first obs. used      1953-01-09  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47818  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:12:47  

Additional Information
 Earth MOID = 4.1302 au 
 Jupiter MOID = .142777 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-January); 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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