d Tucanae


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 d Tuc, NSV 14158, HR 8540, HD 212581, SAO 255222, WDS 22273-6458
constellation Tucana

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


position, motion, parallax:

position (J2000) RA: 22h 27min 20sec DEC: -64 57' 59''
position (J1900) RA: 22h 20min 13,4sec DEC: -65 28' 30''
proper motion (J2000) RA: 0,071 arcsec/a DEC: 0,003 arcsec/a
radial velocity 12 km/s
rotational velocity 245 km/s (uncertain) (variable)

magnitude

visual magnitude 4,48
(V on UBV Johnson system)

spectral / color information

spectral class B9.5V
B-V-magnitude -0,03
U-B-magnitude -0,07

variability information

variable star identification 14158

double/multiple star system information

separation 6,9 arcsec
mag difference (of double or brightest multiple) 4,5
note Worley (1978) update of the IDS
note (category: double and multiple data): CPM companion F5III, optical.

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

position, motion, parallax:

position (J2000) RA: 22h 27min 19,866sec DEC: -64 57' 58,62'' 0,19 arcsec source: 16
proper motion (J2000) RA: 0,0106 arcsec/a DEC: 0,014 arcsec/a source: 25
radial velocity 12 km/s source: 25
galactic coord. (B1950) longitude: 323,87 latitude: -45,87
GCI unit vector (J2000) X: 0,389029 Y: -0,166475 Z: -0,906059

magnitude:

visual 4,48 (observed) source: 25
photovisual 4,2 source: 16
photographic 4,8 source: 2

spectral information:

spectral class B9 source: 96
Morgan-Keenan B9.5V source: 25
B-magnitude 4,45 0,05 B-V-magnitude -0,03
U-magnitude 4,38 0,05 U-B-magnitude -0,07

variability information:

source of data: 28
variability type 9
var. amplitude 0,04

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 0 arcsec
position angle 251

component magnitude spectral class catalogue(s)/name(s)
A 4,48 B9 d Tucanae, HR 8540, HD 212581, SAO 255222
B 4,2 -

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
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: 22h 23min 48,047sec DEC: -65 13' 18,17'' 0,016 arcsec
position (J2000) RA: 22h 27min 20,002sec DEC: -64 57' 59,31''
proper motion J1950 (FK4) RA: 0,0124 arcsec/a DEC: 0,005 arcsec/a 0,003 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0112 arcsec/a DEC: 0,003 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,8 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class B9
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue GC, catalogue number: 31346
Durchmusterung CP-65 4044A
Boss General Catalogue 31346
Henry Draper Catalogue 212581

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

position and proper motion:

position (J2000) RA: 22h 27,3min DEC: -64 58'
proper motion (J2000) RA: 0,06 arcsec/a DEC: 0,009 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
Aa 1992 1 251 0'' 4,48 - B9.5V CHR 188
Aa-B 1836 8 282 6,9'' 4,8 9,3 - HJ 5334

discoverer information:

discoverer code discoverer reference
CHR 188 - -
HJ 5334 Herschel, J. -

notes:

note Delta Tuc.

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

position:

position (J1950) RA: 22h 23min 48sec DEC: -65 13' 18''

variability informations:

magnitute at max. brightness 4,46
magnitute at min. brightness 4,5
photometric system visual, photovisual or Johnson's V

spectral information

spectral class B8

references

to a study 752781D (designation: HD 212581)

miscanellous

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