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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828897298236904 3.0586e-08  
a 2.246153347147247 7.8235e-09 au
q 1.835354968344909 7.0159e-08 au
i 5.05895122720067 4.8801e-06 deg
node 8.999309450108706 3.7375e-05 deg
peri 275.3461025346433 4.0954e-05 deg
M 251.417829123951 1.9567e-05 deg
tp 2458971.363036903213
(2020-May-01.86303690)
6.7536e-05 TDB
period 1229.582096286917
3.37
6.4241e-06
1.759e-08
d
yr
n .2927824023195566 1.5297e-09 deg/d
Q 2.656951725949584 9.2544e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1956  
   data-arc span      23424 days (64.13 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47682  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:42:46  

Additional Information
 Earth MOID = .827071 au 
 Jupiter MOID = 2.51149 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 14.0   n/a MPO384797  
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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