Miaplacidus


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 Miaplacidus, b Car, HR 3685, HD 80007, SAO 250495, FK5: 348
constellation Carina

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

note (category: star names): Miaplacidus.

position, motion, parallax:

position (J2000) RA: 9h 13min 12sec DEC: -69 43' 2''
position (J1900) RA: 9h 12min 6,2sec DEC: -69 18' 19''
proper motion (J2000) RA: -0,162 arcsec/a DEC: 0,108 arcsec/a
radial velocity -5 km/s
note: suspected variable radial velocity
rotational velocity 133 km/s (uncertain) (variable)
trigonometric parallax 0,021 arcsec

magnitude

visual magnitude 1,68
(V on UBV Johnson system)

spectral / color information

spectral class A2IV
B-V-magnitude 0
U-B-magnitude 0,03
R-I-magnitude 0,02

variability information

note (category: variability): Balmer lines show quasi periodic var. in cycles of about 35 min.

miscellaneous information

note (category: stellar radii or diameters): Diam. = 0.00151 - 0.00159".

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

position, motion, parallax:

position (J2000) RA: 9h 13min 11,957sec DEC: -69 43' 1,95'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0311 arcsec/a DEC: 0,108 arcsec/a source: 25
radial velocity -5 km/s source: 25
trigonometric parallax 0,021 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 285,98 latitude: -14,41
GCI unit vector (J2000) X: -0,258824 Y: 0,230606 Z: -0,937993

magnitude:

visual 1,68 (observed) source: 25
photovisual 1,8 source: 2
photographic 1,8 source: 2

spectral information:

spectral class A0 source: 96
Morgan-Keenan A2IV source: 25
B-magnitude 1,68 0,05 B-V-magnitude 0
U-magnitude 1,71 0,05 U-B-magnitude 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: 9h 12min 39,662sec DEC: -69 30' 39,63'' 0,009 arcsec
position (J2000) RA: 9h 13min 12,08sec DEC: -69 43' 1,96''
proper motion J1950 (FK4) RA: -0,0288 arcsec/a DEC: 0,102 arcsec/a 0,002 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0297 arcsec/a DEC: 0,108 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 1,8 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class A0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 348
Durchmusterung CP-69 1023
Boss General Catalogue 12764
Henry Draper Catalogue 80007