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4811 Semashko (1973 SO3)
Classification: Main-belt Asteroid          SPK-ID: 2004811
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1829485353761141 1.0547e-08  
a 2.246056611503898 5.9123e-09 au
q 1.835143844057422 2.32e-08 au
i 5.059290514451839 9.5389e-07 deg
node 8.974902002986992 3.5094e-06 deg
peri 275.2259641902406 6.5362e-06 deg
M 67.20078778875153 5.4058e-06 deg
tp 2458970.990145331013
(2020-May-01.49014533)
1.8596e-05 TDB
period 1229.502665066455
3.37
4.8546e-06
1.329e-08
d
yr
n .292801317336341 1.1561e-09 deg/d
Q 2.656969378950373 6.994e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2685  
   data-arc span      24068 days (65.89 yr)  
   first obs. used      1955-03-23  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:48:38  

Additional Information
 Earth MOID = .825572 au 
 Jupiter MOID = 2.51113 au 
 T_jup = 3.603 
[ 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 14.02   n/a MPCxxxxx  
diameter diameter 3.767 km 0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.247   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4811 Semashko (1973 SO3)          Discovered 1973-Sep-25 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1973 SO3 = 1979 FK3 = 1983 RS1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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