a Pyxidis

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 Pyx, NSV 04220, HR 3468, HD 74575, SAO 199546, FK5: 327
constellation Pyxis

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


position, motion, parallax:

position (J2000) RA: 8h 43min 35,5sec DEC: -33° 11' 11''
position (J1900) RA: 8h 39min 34,4sec DEC: -32° 49' 33''
proper motion (J2000) RA: -0,011 arcsec/a DEC: 0,011 arcsec/a
radial velocity 15 km/s
note: suspected variable radial velocity
rotational velocity 19 km/s (uncertain) (variable)
note (category: radial and/or rotational velocities): Expanding circumstellar shell.

magnitude

visual magnitude 3,68
(V on UBV Johnson system)

spectral / color information

spectral class B1.5III
B-V-magnitude -0,18
U-B-magnitude -0,88
R-I-magnitude -0,16

variability information

variable star identification 4220

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

position, motion, parallax:

position (J2000) RA: 8h 43min 35,545sec DEC: -33° 11' 11,02'' ±0,06 arcsec source: 15
proper motion (J2000) RA: -0,0009 arcsec/a DEC: 0,011 arcsec/a source: 25
radial velocity 15 km/s source: 25
galactic coord. (B1950) longitude: 255° latitude: 5,77°
GCI unit vector (J2000) X: -0,547928 Y: 0,632588 Z: -0,547365

magnitude:

visual 3,68 (observed) source: 25
photovisual 3,7 source: 2
photographic 3,5 source: 2

spectral information:

spectral class B2 source: 96
Morgan-Keenan B1.5III source: 25
B-magnitude 3,5 ±0,05 B-V-magnitude -0,18
U-magnitude 2,62 ±0,05 U-B-magnitude -0,88

variability information:

source of data: 28
variability type 9
var. amplitude 0,03

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: 8h 41min 34,889sec DEC: -33° 0' 18,64'' ±0,008 arcsec
position (J2000) RA: 8h 43min 35,529sec DEC: -33° 11' 10,94''
proper motion J1950 (FK4) RA: -0,0014 arcsec/a DEC: 0,009 arcsec/a ±0,002 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,001 arcsec/a DEC: 0,012 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,7 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class B2
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 327
Durchmusterung CD-32 5651
Boss General Catalogue 12018
Henry Draper Catalogue 74575

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

position:

position (J1950) RA: 8h 41min 34,9sec DEC: -33° 0' 19''

variability informations:

magnitute at max. brightness 3,67
magnitute at min. brightness 3,7
photometric system visual, photovisual or Johnson's V

spectral information

spectral class B2

references

to a study 660820D (designation: HR 3468)