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20969 Samo (1979 SH)
Classification: Main-belt Asteroid          SPK-ID: 2020969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2760974204660734 4.789e-08  
a 2.605821559516189 8.37e-09 au
q 1.886360948738888 1.2494e-07 au
i 5.208693979320337 4.0737e-06 deg
node 331.4147661550298 5.243e-05 deg
peri 50.19335839855633 5.2761e-05 deg
M 276.110841307877 6.5533e-06 deg
tp 2459558.529469059557
(2021-Dec-10.02946906)
2.872e-05 TDB
period 1536.439402551109
4.21
7.4026e-06
2.027e-08
d
yr
n .2343079716663442 1.1289e-09 deg/d
Q 3.325282170293489 1.0681e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1186  
   data-arc span      14890 days (40.77 yr)  
   first obs. used      1979-09-17  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51018  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:35:24  

Additional Information
 Earth MOID = .892737 au 
 Jupiter MOID = 2.17134 au 
 T_jup = 3.352 
[ show covariance matrix ]

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 14.56   n/a E2021B10  
diameter diameter 3.189 km 0.726 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20969 Samo           Discovered 1979 Sept. 17 by A. Mrkos at Klet.
Samo (c. 600-c. 659) was a French merchant. Around the year 623 he organized the Slavic tribes into a kingdom and led this kingdom to defeat the Avars. Samo ruled over this Slavic kingdom, centered in Bohemia, until his death. This kingdom is the earliest state known to have been established in Bohemia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011230/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1979 SH = 1998 EN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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