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11251 Icarion (1973 SN1)
Classification: Jupiter Trojan          SPK-ID: 2011251
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .001581527048659 4.6734e-08  
a 5.165579263536877 8.2462e-08 au
q 5.157409760209601 2.0707e-07 au
i 4.202952963782218 3.7777e-06 deg
node 101.9971197859038 8.8451e-05 deg
peri 151.1625491905219 0.0020296 deg
M 126.3384586993942 0.0020266 deg
tp 2457695.591672544298
(2016-Nov-03.09167254)
0.024146 TDB
period 4288.219149270423
11.74
0.00010268
2.811e-07
d
yr
n .08395093335219321 2.0103e-09 deg/d
Q 5.173748766864152 8.2593e-08 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      17312 days (47.40 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:38:31  

Additional Information
 Earth MOID = 4.13984 au 
 Jupiter MOID = .0161974 au 
 T_jup = 2.995 
[ 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 12.03   n/a E2021B10  
diameter diameter 22.012 km 0.755 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
rotation period rot_per 10.448 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:
[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 0.058   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

11251 Icarion           Discovered 1973 Sept. 20 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Icarion was the son of Ebalus of Sparta. By the nymph Periboea Icarion was the father of Penelope.
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 SN1 = 1992 JA5 = 1996 RC33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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