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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06940372778919769 2.2466e-08  
a 5.229353263214688 7.2037e-08 au
q 4.866416652820983 1.6614e-07 au
i 11.47083192936983 1.4432e-06 deg
node 219.7727035797104 3.3409e-06 deg
peri 86.85665946264041 2.3973e-05 deg
M 294.6230473195856 2.4024e-05 deg
tp 2460189.718019237220
(2023-Sep-02.21801924)
0.0002994 TDB
period 4367.876984436847
11.96
9.0255e-05
2.471e-07
d
yr
n .08241990360138657 1.7031e-09 deg/d
Q 5.592289873608393 7.7037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2335  
   data-arc span      16000 days (43.81 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:43:26  

Additional Information
 Earth MOID = 3.8763 au 
 Jupiter MOID = .263188 au 
 T_jup = 2.955 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457523.5 (2016-May-15.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0670287873449428 2.2526e-08  
q 4.893306674264472 1.6734e-07 au
tp 2455803.624236014158
(2011-Aug-30.12423601)
0.00027489 TDB
node 219.7774873192858 3.3404e-06 deg
peri 86.19950525183502 2.4629e-05 deg
i 11.46232415123915 1.4424e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2335  
   data-arc span      16000 days (43.81 yr)  
   first obs. used      1977-10-18  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:43:26  

Additional Information
 Jupiter MOID = .263188 au 
 T_jup = 2.955 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.074387191803441E-16 -3.560839042731432E-15 -1.164602109026038E-12 3.238340962417636E-14 -1.936696727872916E-13 6.561686057796017E-15
q -3.560839042731432E-15 2.800151117140076E-14 1.033005671989258E-11 -2.016642941662989E-13 1.604717884452679E-12 -4.134244792065273E-14
tp -1.164602109026038E-12 1.033005671989258E-11 7.556319118156839E-8 -6.293046029729907E-10 6.655805424399443E-9 -1.188268557719198E-10
node 3.238340962417636E-14 -2.016642941662989E-13 -6.293046029729907E-10 1.11584686097888E-11 -6.165515950758632E-11 3.131045265604288E-12
peri -1.936696727872916E-13 1.604717884452679E-12 6.655805424399443E-9 -6.165515950758632E-11 6.066083959178052E-10 -1.264366000218372E-11
i 6.561686057796017E-15 -4.134244792065273E-14 -1.188268557719198E-10 3.131045265604288E-12 -1.264366000218372E-11 2.080596915913499E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.67   n/a MPO636248  
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. 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:
[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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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