Alfecca Meridiana


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


catalogues and names Alfecca Meridiana, a CrA, HR 7254, HD 178253, SAO 210990, FK5: 718
constellation Corona Australis

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

note (category: star names): Alfecca Meridiana.

position, motion, parallax:

position (J2000) RA: 19h 9min 28,3sec DEC: -37 54' 16''
position (J1900) RA: 19h 2min 40,2sec DEC: -38 3' 36''
proper motion (J2000) RA: 0,084 arcsec/a DEC: -0,098 arcsec/a
radial velocity -18 km/s
rotational velocity 201 km/s (uncertain) (variable)
trigonometric parallax 0,036 arcsec

magnitude

visual magnitude 4,11
(V on UBV Johnson system)

spectral / color information

spectral class A2V
B-V-magnitude 0,04
U-B-magnitude 0,08
R-I-magnitude 0

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

position, motion, parallax:

position (J2000) RA: 19h 9min 28,336sec DEC: -37 54' 16,22'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0071 arcsec/a DEC: -0,098 arcsec/a source: 25
radial velocity -18 km/s source: 25
trigonometric parallax 0,036 0,004 arcsec source: 25
galactic coord. (B1950) longitude: 359,55 latitude: -19,59
GCI unit vector (J2000) X: 0,235534 Y: -0,753061 Z: -0,614347

magnitude:

visual 4,11 (observed) source: 25
photovisual 4,1 source: 2
photographic 4,2 source: 2

spectral information:

spectral class A2 source: 96
Morgan-Keenan A2V source: 25
B-magnitude 4,15 0,05 B-V-magnitude 0,04
U-magnitude 4,23 0,05 U-B-magnitude 0,08

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: 19h 6min 4,345sec DEC: -37 59' 3,49'' 0,011 arcsec
position (J2000) RA: 19h 9min 28,334sec DEC: -37 54' 16,35''
proper motion J1950 (FK4) RA: 0,0071 arcsec/a DEC: -0,099 arcsec/a 0,003 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0072 arcsec/a DEC: -0,1 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 A2
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 718
Durchmusterung CD-3813350
Boss General Catalogue 26360
Henry Draper Catalogue 178253