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JPL Small-Body Database Browser
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6822 Horalek (1986 UO)
Classification: Main-belt Asteroid          SPK-ID: 2006822
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2475370534418817 4.368e-08  
a 2.590669627268979 1.1258e-08 au
q 1.949382901293438 1.1713e-07 au
i 2.731427175123317 4.263e-06 deg
node 15.49527613503552 7.181e-05 deg
peri 337.3211844696991 7.2215e-05 deg
M 47.41141504975595 5.9968e-06 deg
tp 2458799.915719991233
2.5277e-05 TDB
period 1523.058122761676
n .2363665539875996 1.5408e-09 deg/d
Q 3.23195635324452 1.4045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1616  
   data-arc span      12165 days (33.31 yr)  
   first obs. used      1986-10-07  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46153  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:13:14  

Additional Information
 Earth MOID = .944553 au 
 Jupiter MOID = 2.20774 au 
 T_jup = 3.374 
[ 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 14.6   n/a MPO296191  
diameter diameter 5.257 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.122   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

6822 Horálek           Discovered 1986 Oct. 28 by Z. Vavrova at Klet.
Petr Horálek (b. 1986) is a Czech astronomer, astronomy popularizer, passionate photographer, and one of the ESO Photo Ambassadors. He travels the globe to observe solar and lunar eclipses. His breathtaking photographs capture the beauty of the night sky and its harmony with the landscape.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-09-28Last Updated: 2015-10-05

Alternate Designations
 1986 UO = 1990 RS1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-May-30 22:43 UT
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