Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
JPL Small-Body Database Browser
Search: [ help ]  
7216 Ishkov (1977 QQ2)
Classification: Main-belt Asteroid          SPK-ID: 2007216
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1794334398614612 4.2388e-08  
a 2.156567130462552 7.4053e-09 au
q 1.769606871951496 8.9207e-08 au
i 2.018219689876007 3.712e-06 deg
node 277.5529509409578 0.00014356 deg
peri 20.49672376367877 0.00014445 deg
M 135.8202825013453 1.5007e-05 deg
tp 2457164.079615169068
4.7755e-05 JED
period 1156.759032198149
n .3112143410852859 1.603e-09 deg/d
Q 2.543527388973609 8.7341e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1403  
   data-arc span      14044 days (38.45 yr)  
   first obs. used      1977-08-21  
   last obs. used      2016-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49872  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:55:40  

Additional Information
 Earth MOID = .753624 au 
 Jupiter MOID = 2.64701 au 
 T_jup = 3.679 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4 mag n/a MPO358701  
rotation period rot_per 10.9579 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

7216 Ishkov           Discovered 1977 Aug. 21 by N. S. Chernykh at the Crimean Astrophysical Observatory.
Vitalij Nikitich Ishkov, astrophysicist at the Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation in Moscow, works in the fields of solar physics, solar activity and solar-terrestrial relations.
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
 1977 QQ2 = 1992 ES17 = 1993 TM40 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-01 09:54 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin