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22253 Sivers (1978 SU7)
Classification: Main-belt Asteroid          SPK-ID: 2022253
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1843996574438898 4.778e-08  
a 2.568956749862953 2.2374e-08 au
q 2.095242005200056 1.2221e-07 au
i 15.24545701880537 8.3393e-06 deg
node 1.778126050831125 1.8469e-05 deg
peri 290.3605406768942 3.2496e-05 deg
M 127.2663759229186 2.598e-05 deg
tp 2457068.826771984465
0.00010978 JED
period 1503.950754451587
n .2393695398166632 3.1271e-09 deg/d
Q 3.04267149452585 2.65e-08 au
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      13624 days (37.30 yr)  
   first obs. used      1978-09-26  
   last obs. used      2016-01-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50884  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 20:05:14  

Additional Information
 Earth MOID = 1.13467 au 
 Jupiter MOID = 2.38303 au 
 T_jup = 3.358 
[ 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 13.4 mag n/a MPO350978  

22253 Sivers           Discovered 1978 Sept. 26 by L. V. Zhuravleva at the Crimean Astrophysical Observatory.
Yakov Efimovich Sivers (1731-1808) was an outstanding Russian statesman, governor of Novgorod province. As the founder and director of the Waterways Communications Department he made an invaluable contribution to navigation in Russia. In particular, he reconstructed the old canals between the Volga and Neva rivers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 1978 SU7 = 1982 SK10 = 1990 RW10 = 2000 AC248 = 2001 AZ37 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-06 07:22 UT
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