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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .001892116961044487 4.8232e-08  
a 5.164330415523246 9.046e-08 au
q 5.154558898351596 2.2e-07 au
i 4.202958064763153 4.6141e-06 deg
node 101.9952439226875 8.9348e-05 deg
peri 147.812483186278 0.0019897 deg
M 112.8717702108956 0.0019846 deg
tp 2457656.490638996490
(2016-Sep-24.99063900)
0.023642 TDB
period 4286.66414159382
11.74
0.00011263
3.084e-07
d
yr
n .08398138695002794 2.2066e-09 deg/d
Q 5.174101932694895 9.0631e-08 au
  Orbit Determination Parameters
   # obs. used (total)      816  
   data-arc span      16869 days (46.18 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64357  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:33:43  

Additional Information
 Earth MOID = 4.13914 au 
 Jupiter MOID = .0166143 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 12.0   n/a MPO452329  
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. 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 0.058   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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