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N.V.Kharchenko. The programme of Main Meridional Section of the Galaxy (MEGA): The catalogue of stellar astrometric characteristics with astrophysical supplements

Description:

The catalogue includes 26436 stars. The method of catalogue formation is described by N.Kharchenko [4].

References:

  • 1. Andruk V., Kharchenko N., Schilbach E., Scholz R.-D.: 1995, Astron. Nachr., vol 316, 225.
  • 2. Dieckvoss V., Heckmann O., Kox H., Gunther A., Brosterhus E.: 1975, Star catalogue of positions and proper motions north -2.5 degree declination, vol. 1-8, Bad Godelsberg, Hamburg-Bergedorf.
  • 3. Kharchenko N.V.: 1987, Kinematics and physics of selestial bodies, vol. 3, No 4, 7.
  • 4. Kharchenko N.V.: 1989, Kinematics and physics of selestial bodies, vol. 5, No 6, 9.
  • 5. Smithsonian Star Catalogue, vol. 1-4, 1966, Smithson. Inst., Washington.

Byte to byte description of the MEGA catalog

_______________________________________________________________________________
Column  Bytes Format Design    Units          Remarks
_______________________________________________________________________________
  1      1- 8   i8     N       -         Star number:
                                         7-digital number, digital 1 is equal 
				         to 0,1,2, indicated, if the star is 
                                         from AGK3 [2], MEGA field catalogue [3]
                                         or SAOC [5] list;
				         digitals 2 to 7 are star numbers in 
				         these catalogues.
  2      9-15   i7     NB      -         BD number,
					 is equal to 0, if data are absent.
  3     16-24   i9  R.A.(1950) h,m,s*.01 Right Ascension of the observation
				         epoch and equinox 1950.0;
				         8-digital number, 
                                         digitals 1,2 are hour,
			                 digitals 3,4 are minute,
				         digitals 5-8 are second multiplated 
                                         by 100.
  4     25-32   i8   D.(1950) o,',"*.1   Declination of the observation
				         epoch and equinox 1950.0;
				         8-digital number, 
                                         digital 1 is sign,
					 digitals 2,3 are degree,
				         digitals 4,5 are minute,
				         digitals 6-8 are second multiplated 
                                         by 10.
  5     33-38   i6   P.M.x  0.1 mas/y    Absolute proper motions in x.
  6     39-44   i6   P.M.y  0.1 mas/y    Absolute proper motions in y.
  7     45-47   i3   E.P.M. 0.1 mas/y    R.M.S.errors of a
                                         absolute proper motions.
  8     48-52   i5    VR    0.1 km/s     Radial velocity multiplated by 10,
				         is equal to 22222, if data are absent.
  9     53-57   i5    Sp       -         Spectral classification results:
				         5-digital number,
					 is equal to 22222, if data are absent;
				         digitals 1-2 are the spectral class,
				         and are equal to
				         1,2,3,4,5,6,7,8,9,10,11,12,13,14
				         if spectral classes are equal to
				         O,B,A,F,G,K,M,R,S,N,WC,WN,C,P;
				         digital 3 is spectral subclass;
				         digital 4 is luminocity class,
				         and is equal to 1,2,3,4,5,6,7,8,9,0,
				         if luminocity classes are equal to
				         I,II,III,IV,V,VI,Ia,Ib,Iac, 
                                         data are absent;
					 digital 5 is second luminocity class.
 10     58-61   i4    U     0.01 mag     Stellar magnitude in U system
					 multiplated by 100,
				         is equal to 2222, if data are absent.
 11     62-65   i4    B     0.01 mag     Stellar magnitude in B system
					 multiplated by 100,
				         with respect of photoelectrical
				         standards [1],
				         is equal to 2222, if data are absent.
 12     66-69   i4    V     0.01 mag     Stellar magnitude in V system
					 multiplated by 100,
				         is equal to 2222, if data are absent.
 13     70-71   i2  E phot. 0.01 mag     R.M.S. errors of photometric data
					 multiplated by 100,
					 is equal to 2-3 for photoelectric data,
					 is equal to 20 for AGK3 or SAOC data,
					 is equal to 30 for MEGA field data.
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Byte to byte description
Data (1929.8Kb)


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L.Pakuliak. Questions, remarks and propositions are welcome.