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2163 Korczak (1971 SP1)
Classification: Main-belt Asteroid          SPK-ID: 2002163
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865140747032988 1.9338e-08  
a 3.150208755580863 1.4818e-08 au
q 2.562650484411468 6.4513e-08 au
i 2.510575422463385 7.2321e-07 deg
node 113.275361172779 7.8373e-06 deg
peri 264.1999548232402 7.8762e-06 deg
M 299.5051778305531 4.6822e-06 deg
tp 2459543.680918183835
(2021-Nov-25.18091818)		 2.7827e-05 TDB
period 2042.243056771519
5.59		 1.4409e-05
3.945e-08		 d
yr
n .1762767652980083 1.2438e-09 deg/d
Q 3.737767026750258 1.7582e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2704  
   data-arc span      25863 days (70.81 yr)  
   first obs. used      1949-12-14  
   last obs. used      2020-10-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:24:55  

Additional Information
 Earth MOID = 1.56461 au 
 Jupiter MOID = 1.72767 au 
 T_jup = 3.179 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.82   n/a E2021B10  
diameter diameter 24.368 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.997 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.075   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2163 Korczak           Discovered 1971 Sept. 16 at the Crimean Astrophysical Observatory.
Named in memory of Janusz Korczak (1878-1942), Polish writer, teacher and doctor who perished with his 200 pupils at Treblinka.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5284Last Updated: 2007-10-23

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Alternate Designations
 1971 SP1 = 1949 XK = 1951 EM1 = 1954 SP1 = 1960 WR = 1976 OW 
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