a Scuti


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 a Sct, NSV 11056, HR 6973, HD 171443, SAO 142408, FK5: 1482
constellation Scutum

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


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

position, motion, parallax:

position (J2000) RA: 18h 35min 12,4sec DEC: -8 14' 39''
position (J1900) RA: 18h 29min 45,9sec DEC: -8 18' 51''
proper motion (J2000) RA: -0,015 arcsec/a DEC: -0,312 arcsec/a
radial velocity 36 km/s
note: suspected variable radial velocity
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax 0,016 arcsec

magnitude

visual magnitude 3,85
(V on UBV Johnson system)

spectral / color information

spectral class K3-III-IIIb
B-V-magnitude 1,33
U-B-magnitude 1,54
R-I-magnitude 0,68

variability information

variable star identification 11056
note (category: variability): Amp. 0.10V.

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

position, motion, parallax:

position (J2000) RA: 18h 35min 12,436sec DEC: -8 14' 38,63'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,001 arcsec/a DEC: -0,312 arcsec/a source: 25
radial velocity 36 km/s source: 25
trigonometric parallax 0,016 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 23,76 latitude: -0,17
GCI unit vector (J2000) X: 0,151436 Y: -0,978011 Z: -0,14339

magnitude:

visual 3,85 (observed) source: 25
photovisual 4,1 source: 2
photographic 5,1 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K3III source: 25
B-magnitude 5,18 0,05 B-V-magnitude 1,33
U-magnitude 6,72 0,05 U-B-magnitude 1,54

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
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: 18h 32min 29,108sec DEC: -8 16' 50,47'' 0,004 arcsec
position (J2000) RA: 18h 35min 12,441sec DEC: -8 14' 38,51''
proper motion J1950 (FK4) RA: -0,0013 arcsec/a DEC: -0,312 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,001 arcsec/a DEC: -0,311 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 1482
Durchmusterung BD-08 4638
Boss General Catalogue 25385
Henry Draper Catalogue 171443

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

position:

position (J1950) RA: 18h 32min 29,1sec DEC: -8 16' 50''

variability informations:

magnitute at max. brightness 3,81
magnitute at min. brightness 3,87
photometric system visual, photovisual or Johnson's V

spectral information

spectral class K3

references

to a study 0807D (designation: 14G SCT)