Mirach


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0

  5. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names Mirach, b And, NSV 00414, 43 And, HR 337, HD 6860, SAO 54471, FK5: 42, WDS 01097+3537A
other names Merach, Mirac, Mirak, Al Mizar
constellation Andromeda

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

note (category: star names): MIRACH; Merach; Mirac; Mirak; (al Mizar).

object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 1h 9min 43,9sec DEC: +35 37' 14''
position (J1900) RA: 1h 4min 7,8sec DEC: +35 5' 26''
proper motion (J2000) RA: 0,178 arcsec/a DEC: -0,114 arcsec/a
radial velocity 3 km/s
note: variable radial velocity
trigonometric parallax 0,049 arcsec

magnitude

visual magnitude 2,06
(V on UBV Johnson system)

spectral / color information

spectral class M0+IIIa
B-V-magnitude 1,58
U-B-magnitude 1,96
R-I-magnitude 1
note (category: spectra): Ultraviolet FeII emission. Also classified B9III.

variability information

variable star identification 414

double/multiple star system information

number of components of multiple star system 5
separation 80,4 arcsec
mag difference (of double or brightest multiple) 10,1
component ID AD

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000) RA: 1h 9min 43,931sec DEC: +35 37' 13,95'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0146 arcsec/a DEC: -0,113 arcsec/a source: 25
radial velocity 3 km/s source: 25
trigonometric parallax 0,049 0,005 arcsec source: 25
galactic coord. (B1950) longitude: 127,11 latitude: -27,1
GCI unit vector (J2000) X: 0,775554 Y: 0,243535 Z: 0,582414

magnitude:

visual 2,06 (observed) source: 25
photovisual 2,4 source: 2

spectral information:

spectral class M0 source: 96
Morgan-Keenan M0+IIIa source: 25
B-magnitude 3,64 0,05 B-V-magnitude 1,58
U-magnitude 5,6 0,05 U-B-magnitude 1,96

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 27 arcsec
magnitude difference between brightest and second brightest component 12,3
position angle 202

sources:

2 HD and HDE Catalogs
Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University
15 FK5, FK5 Extension and FK5 Supplement
Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991
19 WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
25 Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
96 SAO or HD/HDE Catalog
Reference from Value 1 or Reference from Value 2

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (J1950) RA: 1h 6min 55,456sec DEC: +35 21' 21,74'' 0,003 arcsec
position (J2000) RA: 1h 9min 43,942sec DEC: +35 37' 13,93''
proper motion J1950 (FK4) RA: 0,0146 arcsec/a DEC: -0,109 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0147 arcsec/a DEC: -0,113 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 2,4 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class M0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 42
Durchmusterung BD+34 198
Boss General Catalogue 1400
Henry Draper Catalogue 6860

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000) RA: 1h 9,7min DEC: +35 37'
proper motion (J2000) RA: 0,178 arcsec/a DEC: -0,114 arcsec/a

double/multiple star system information:

component year number of measures position angle angular separation magnitude of 1st component magnitude of 2nd component spectral class(es) discoverer code
AB 1898 2 186 28,4'' 2,06 14,4 M1III BAR 1
1934 202 27''
AC 1879 4 269 84,9'' 2,06 12,9 - BAR 1
1937 273 94,8''
AD 1879 4 141 90,8'' 2,06 12,1 - BAR 1
1938 144 80,4''
Bb 1934 1 126 24,6'' 13 13,7 - KUI 5

discoverer information:

discoverer code discoverer reference
BAR 1 Barnard, E.E. (Astron. Nachr. 172, 383; 1906.)
KUI 5 Kuiper, G.P. -

notes:

note Beta And. B,C and D are optical.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 1h 6min 55,5sec DEC: +35 21' 22''

variability informations:

magnitute at max. brightness 2,01
magnitute at min. brightness 2,1
photometric system visual, photovisual or Johnson's V

spectral information

spectral class M0

references

to a study 0807D (designation: BETA AND)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).