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11252 Laertes (1973 SA2)
Classification: Jupiter Trojan          SPK-ID: 2011252
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0310323630107819 5.4147e-08  
a 5.13986281450353 8.7025e-08 au
q 4.980360725818238 3.3573e-07 au
i 5.857393481384162 4.4387e-06 deg
node 78.31396325373021 5.6475e-05 deg
peri 326.2244901027348 0.00010263 deg
M 305.9064196070467 8.6376e-05 deg
tp 2459640.041815396688
(2022-Mar-01.54181540)
0.0010234 TDB
period 4256.236172024585
11.65
0.0001081
2.96e-07
d
yr
n .08458177259199341 2.1481e-09 deg/d
Q 5.299364903188823 8.9726e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1740  
   data-arc span      25155 days (68.87 yr)  
   first obs. used      1951-11-08  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:24:58  

Additional Information
 Earth MOID = 3.99161 au 
 Jupiter MOID = .0458122 au 
 T_jup = 2.989 
[ 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 10.7   n/a MPO502255  
diameter diameter 41.093 km 5.971 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 9.15 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
geometric albedo albedo 0.060   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

11252 Laërtes           Discovered 1973 Sept. 19 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Laërtes, king of Ithaca, was the son of Arcisius, who in turn was a son of Zeus. Laërtes was the husband of Anticleia and father of Odysseus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1973 SA2 = 1977 AY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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