Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03122879690918257 3.7011e-08  
a 5.139661008190655 7.6831e-08 au
q 4.979155578383824 2.4164e-07 au
i 5.857399644166857 1.6259e-06 deg
node 78.31380869752225 3.0071e-05 deg
peri 326.67077437726 6.8479e-05 deg
M 322.4122225950096 5.2758e-05 deg
tp 2459644.869543967757
(2022-Mar-06.36954397)
0.0006255 TDB
period 4255.98550573393
11.65
9.5432e-05
2.613e-07
d
yr
n .08458675423470909 1.8967e-09 deg/d
Q 5.300166437997485 7.923e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2112  
   data-arc span      25299 days (69.26 yr)  
   first obs. used      1951-11-08  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45603  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:38:33  

Additional Information
 Earth MOID = 3.98952 au 
 Jupiter MOID = .0453182 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 10.69   n/a E2021B10  
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. 2020-October); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 04:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin