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JPL Small-Body Database Browser
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8557 Saroun (1995 OK)
Classification: Main-belt Asteroid          SPK-ID: 2008557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .140192594336836 3.9564e-08  
a 2.306307263188664 8.0319e-09 au
q 1.982980064624357 9.3804e-08 au
i 6.962568952660231 3.7095e-06 deg
node 124.9149683779747 3.1925e-05 deg
peri 204.4337830223596 3.4586e-05 deg
M 15.13855028417128 1.4197e-05 deg
tp 2458946.703259378159
(2020-Apr-07.20325938)
5.0362e-05 TDB
period 1279.305234670491
3.50
6.6829e-06
1.83e-08
d
yr
n .2814027413033487 1.47e-09 deg/d
Q 2.629634461752971 9.1579e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1363  
   data-arc span      9792 days (26.81 yr)  
   first obs. used      1992-10-26  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:57:25  

Additional Information
 Earth MOID = .973651 au 
 Jupiter MOID = 2.68893 au 
 T_jup = 3.565 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO435780  

8557 Šaroun           Discovered 1995 July 23 by L. Sarounova at Ondrejov.
Named in honor of the discoverer's father, Jaroslav Šaroun (b. 1943). A teacher at the Prague Academy of Musical Arts and a member of the Czech Philharmonic Orchestra, he is a pianist who is always in great demand as an accompanist for Czech and foreign singers. As a lover of astronomy, he influenced and supported his daughter in her desire to become an astronomer. This minor planet was discovered on the day after his birthday.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980808/MPCPages.arcLast Updated: 2009-11-17

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Alternate Designations
 1995 OK = 1994 CQ18 
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