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141593 (2002 HK12)
Classification: Apollo [NEO, PHA]          SPK-ID: 2141593
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 94 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5297578430382547 2.3955e-08  
a 2.002075873424023 6.3106e-08 AU
q .941460477119983 3.5588e-08 AU
i 2.359197641170034 3.2893e-06 deg
node 307.1369841631804 9.9008e-05 deg
peri 2.081769241953717 9.8285e-05 deg
M 128.6997231543256 7.6858e-05 deg
tp 2456630.591477871566
(2013-Dec-04.09147787)
0.00020343 JED
period 1034.711378567256
2.83
4.8922e-05
1.339e-07
d
yr
n .3479231092427772 1.645e-08 deg/d
Q 3.062691269728064 9.6537e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      560  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      7505 days (20.55 yr)  
   first obs. used      1985-06-11  
   last obs. used      2005-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55882  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 06:39:59  

Additional Information
 Earth MOID = .024043 AU 
 T_jup = 3.650 
[ 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 18.1 mag n/a MPO220342  
rotation period rot_per 12.690 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Incomplete or inconclusive result.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2002) http://www.asu.cas.cz/~ppravec/neo.htm]
[Wolters, S.D.; Green, S.F.; McBride, N.; Davies, J.K. (2005) Icarus 175, 92-110.]

141593 (2002 HK12)          Discovered 2002-Apr-30 by NEAT at Palomar (644)
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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