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JPL Small-Body Database Browser
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14791 Atreus (1973 SU)
Classification: Jupiter Trojan          SPK-ID: 2014791
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1614991486113468 6.5243e-08  
a 5.143982881629437 1.0321e-07 au
q 4.313234025774941 3.9258e-07 au
i 2.936977162001612 6.0706e-06 deg
node 194.7748369105876 9.7667e-05 deg
peri 185.7529941525349 9.898e-05 deg
M 341.7465221369415 1.88e-05 deg
tp 2459216.568183872374
(2021-Jan-02.06818387)		 0.00022524 TDB
period 4261.354837560875
11.67		 0.00012825
3.511e-07		 d
yr
n .08448017443345733 2.5425e-09 deg/d
Q 5.974731737483934 1.1988e-07 au
   Orbit Determination Parameters
   # obs. used (total)      933  
   data-arc span      16879 days (46.21 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5636  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:50:43  

Additional Information
 Earth MOID = 3.31602 au 
 Jupiter MOID = .246243 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 11.8   n/a MPO416868  
diameter diameter 22.330 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
rotation period rot_per 19.615 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:
[Ryan, E.L.; Sharkey, B.N.L.; Woodward, C.E. (2017) Astron. J. 153, A116.]
[Szabo, Gy.M.; Pal, A.; Kiss, Cs.; Kiss, L.L.; et al. (2017) Astron. Astrophys. 599, A44.]
geometric albedo albedo 0.098   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

14791 Atreus           Discovered 1973 Sept. 19 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Atreus was the son of Pelops, father of Agamemnon and Menelaos and brother of Thyestes.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1973 SU = 1999 XJ31 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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