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12052 Aretaon (1997 JB16)
Classification: Jupiter Trojan          SPK-ID: 2012052
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06920056369989977 4.2371e-08  
a 5.23306258680794 8.7199e-08 au
q 4.870931705923975 2.6617e-07 au
i 11.46641502854559 5.7146e-06 deg
node 219.7740482831279 2.2627e-05 deg
peri 86.24987648101775 5.3345e-05 deg
M 262.5789816775206 5.1374e-05 deg
tp 2460183.766268677910
(2023-Aug-27.26626868)
0.00063805 TDB
period 4372.525190755019
11.97
0.00010929
2.992e-07
d
yr
n .08233228724700327 2.0579e-09 deg/d
Q 5.595193467691906 9.3234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      15634 days (42.80 yr)  
   first obs. used      1977-10-18  
   last obs. used      2020-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:55:31  

Additional Information
 Earth MOID = 3.88119 au 
 Jupiter MOID = .264052 au 
 T_jup = 2.955 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457097.5 (2015-Mar-16.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06684331917597293 4.2457e-08  
q 4.897357440460698 2.6786e-07 au
tp 2455809.316863992516
(2011-Sep-04.81686399)
0.00061469 TDB
node 219.7676206993551 2.2616e-05 deg
peri 86.76317914477868 5.4841e-05 deg
i 11.45949578301922 5.7113e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1882  
   data-arc span      15634 days (42.80 yr)  
   first obs. used      1977-10-18  
   last obs. used      2020-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:55:31  

Additional Information
 Jupiter MOID = .264052 au 
 T_jup = 2.955 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.802634420689872E-15 -1.092015006524989E-14 3.414421972691994E-12 -9.047063580768683E-16 2.483700418105257E-13 8.714687666193853E-17
q -1.092015006524989E-14 7.175126771439243E-14 -4.567347553544444E-13 9.838694283823287E-15 2.790784404900752E-13 2.939401680590901E-15
tp 3.414421972691994E-12 -4.567347553544444E-13 3.77842934077511E-7 2.505996810515426E-11 3.07398209851893E-8 1.226944398357101E-11
node -9.047063580768683E-16 9.838694283823287E-15 2.505996810515426E-11 5.115002674579218E-10 -4.989957132036694E-10 -4.594477809694511E-11
peri 2.483700418105257E-13 2.790784404900752E-13 3.07398209851893E-8 -4.989957132036694E-10 3.007578370525141E-9 4.614465527696987E-11
i 8.714687666193853E-17 2.939401680590901E-15 1.226944398357101E-11 -4.594477809694511E-11 4.614465527696987E-11 3.261946373526914E-11

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 MPO332933  
diameter diameter 39.151 km 0.809 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 8.05 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:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.073   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

12052 Aretaon           Discovered 1997 May 3 by E. W. Elst at the European Southern Observatory.
Aretaon was a Trojan warrior who was killed by Teucer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1997 JB16 = 1977 UG5 = 1999 NE62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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