Maia


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. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names Maia, NSV 01279, 20 Tau, HR 1149, HD 23408, SAO 76155
constellation Taurus

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

note (category: star names): Maia.

position, motion, parallax:

position (J2000) RA: 3h 45min 49,6sec DEC: +24 22' 4''
position (J1900) RA: 3h 39min 52,4sec DEC: +24 3' 19''
proper motion (J2000) RA: 0,02 arcsec/a DEC: -0,046 arcsec/a
radial velocity 8 km/s
note: spectroscopic binaries
rotational velocity 39 km/s (uncertain) (variable)

magnitude

visual magnitude 3,87
(V on UBV Johnson system)

spectral / color information

spectral class B8III
B-V-magnitude -0,07
U-B-magnitude -0,4
R-I-magnitude -0,06
note (category: spectra): C1 neutral carbon continuum shows discontinuities in UV.
note (category: colors): Color excess E(B-V) = +0.02.

variability information

variable star identification 1279
note (category: variability): Probably cst. Var. helium lines.

double/multiple star system information

separation 0 arcsec
mag difference (of double or brightest multiple) 0
note doublicity discoverd by occultation
note (category: double and multiple data): Sep. 0.003". Unresolved by speckle interferometry 1981.69. Duplicity questioned.

miscellaneous information

note (category: group membership): Pleiades cluster; Mel 22 #785; in reflection nebula. Pleiades nebula. Member assoc. Tau R1 at 110 pc.

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

position, motion, parallax:

position (J2000) RA: 3h 45min 49,566sec DEC: +24 22' 3,63'' 0,43 arcsec source: 16
proper motion (J2000) RA: 0,0005 arcsec/a DEC: -0,05 arcsec/a source: 25
radial velocity 8 km/s source: 25
galactic coord. (B1950) longitude: 166,18 latitude: -23,51
GCI unit vector (J2000) X: 0,503345 Y: 0,759219 Z: 0,412591

magnitude:

visual 3,87 (observed) source: 25
photovisual 4 source: 2
photographic 3,9 source: 16

spectral information:

spectral class B5 source: 96
Morgan-Keenan B8III source: 25
B-magnitude 3,8 0,05 B-V-magnitude -0,07
U-magnitude 3,4 0,05 U-B-magnitude -0,4

double/multiple star system information:

source of data: 25
separation between brightest and second brightest component 0 arcsec
magnitude difference between brightest and second brightest component 0

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
16 PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
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: 3h 42min 50,756sec DEC: +24 12' 47,01'' 0,016 arcsec
position (J2000) RA: 3h 45min 49,595sec DEC: +24 22' 3,85''
proper motion J1950 (FK4) RA: 0,0015 arcsec/a DEC: -0,043 arcsec/a 0,003 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0014 arcsec/a DEC: -0,046 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class B5
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue GC, catalogue number: 4500
Durchmusterung BD+23 516
Boss General Catalogue 4500
Henry Draper Catalogue 23408

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

position:

position (J1950) RA: 3h 42min 50,8sec DEC: +24 12' 47''

variability informations:

variability type -
magnitute at max. brightness 3,87
magnitute at min. brightness
photometric system visual, photovisual or Johnson's V

spectral information

spectral class B7

references

to a study 2058D (designation: MAIA)

miscanellous

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