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

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1889383581470631 5.438e-08  
a 3.143176836505607 2.3455e-08 au
q 2.549310165650358 1.7911e-07 au
i 2.509586630887077 5.1133e-06 deg
node 113.3057197460926 0.00012749 deg
peri 265.0554123077064 0.00012826 deg
M 15.68724048283072 1.5353e-05 deg
tp 2457511.805701465421
8.6353e-05 JED
period 2035.40880930556
n .176868645922204 1.9797e-09 deg/d
Q 3.737043507360857 2.7886e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1592  
   data-arc span      24101 days (65.98 yr)  
   first obs. used      1949-12-14  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5229  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:42:25  

Additional Information
 Earth MOID = 1.55162 au 
 Jupiter MOID = 1.72145 au 
 T_jup = 3.180 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.7 mag n/a MPO347535  
rotation period rot_per 3.9967 h n/a LCDB (Rev. 2016-February); 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. (2016) Astron. J. 150, A75.]

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

[ show close-approach data ]
Alternate Designations
 1971 SP1 = 1949 XK = 1951 EM1 = 1954 SP1 = 1960 WR = 1976 OW 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Apr-29 01:54 UT
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