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9184 Vasilij (1991 PJ3)
Classification: Main-belt Asteroid          SPK-ID: 2009184
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09710954444410343 3.1473e-08  
a 2.311850095440699 8.9801e-09 au
q 2.087347385849395 7.3316e-08 au
i 4.797166004793424 4.7853e-06 deg
node 349.3896701065872 4.2289e-05 deg
peri 108.4201368641228 5.0191e-05 deg
M 291.2326885532829 2.8542e-05 deg
tp 2459245.754777884388
0.00010237 TDB
period 1283.919905852227
n .2803913221993727 1.6337e-09 deg/d
Q 2.536352805032002 9.8522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1316  
   data-arc span      13886 days (38.02 yr)  
   first obs. used      1981-10-24  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:13:44  

Additional Information
 Earth MOID = 1.11003 au 
 Jupiter MOID = 2.57699 au 
 T_jup = 3.573 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO492858  

9184 Vasilij           Discovered 1991 Aug. 2 by E. W. Elst at the European Southern Observatory.
Vasilij Rumyantsev (b. 1968) is a Russian astronomer working at the Crimean Astrophysical Observatory. Observing in particular near-earth asteroids and comets, he has become an expert in CCD astronomy. In 1995, the discoverer met him for the first time at Tunguska, Siberia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030106/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1991 PJ3 = 1981 UJ27 = 1988 TR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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