Procyon

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 Procyon, a CMi, NSV 03672, 10 CMi, HR 2943, HD 61421, SAO 115756, FK5: 291, WDS 07393+0514A
other names Elgomaisa, Algomeysa, Antecanis
constellation Canis Minor

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

note (category: star names): PROCYON; Elgomaisa; Algomeysa; Antecanis.

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

position, motion, parallax:

position (J2000) RA: 7h 39min 18,1sec DEC: +5° 13' 30''
position (J1900) RA: 7h 34min 4sec DEC: +5° 28' 53''
proper motion (J2000) RA: -0,71 arcsec/a DEC: -1,023 arcsec/a
radial velocity -3 km/s
note: spectroscopic binaries
note: orbital data avaible
rotational velocity 6 km/s (uncertain) (variable)
trigonometric parallax 0,288 arcsec
note (category: dynamical parallaxes): 0.277".

magnitude

visual magnitude 0,38
(V on UBV Johnson system)

spectral / color information

spectral class F5IV-V
B-V-magnitude 0,42
U-B-magnitude 0,02
R-I-magnitude 0,23
note (category: spectra): Chromospheric He 10830 narrower than in later-type stars.

variability information

variable star identification 3672
note (category: variability): Delta Sct? A 0.09:d period originally attributed to the star beta CMi (HR 2845) may instead apply to Procyon, which had been used as a comparison star.

double/multiple star system information

number of components of multiple star system 5
separation 4,6 arcsec
mag difference (of double or brightest multiple) 10,4
component ID AC
note (category: double and multiple data): AB .35 F5IV-V, 10.3, 40.65y, a = 4.548". Binary nature first revealed in 1840 by variable proper motion; companion first seen in 1896. Component C, 11.7v at 122" optical.
note (category: spectroscopic binaries): 40.65y D, K 1.7k/s, V0 -4.1k/s, asini 324.

miscellaneous information

note (category: stellar radii or diameters): Diam. = 0.00510 - 0.00550".

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

position, motion, parallax:

position (J2000) RA: 7h 39min 18,032sec DEC: +5° 13' 29,76'' ±0,06 arcsec source: 15
proper motion (J2000) RA: -0,0475 arcsec/a DEC: -1,023 arcsec/a source: 25
radial velocity -4 km/s source: 25
trigonometric parallax 0,288 ±0,029 arcsec source: 25
galactic coord. (B1950) longitude: 213,7° latitude: 13,03°
GCI unit vector (J2000) X: -0,418106 Y: 0,903822 Z: 0,091066

magnitude:

visual 0,38 (observed) source: 25
photovisual 0,5 source: 2

spectral information:

spectral class F5 source: 96
Morgan-Keenan F5IV-V source: 25
B-magnitude 0,8 ±0,05 B-V-magnitude 0,42
U-magnitude 0,82 ±0,05 U-B-magnitude 0,02

double/multiple star system information:

source of data: 19
magnitude difference between brightest and second brightest component 12,6

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
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: 7h 36min 41,117sec DEC: +5° 21' 16,81'' ±0,003 arcsec
position (J2000) RA: 7h 39min 18,123sec DEC: +5° 13' 29,95''
proper motion J1950 (FK4) RA: -0,0473 arcsec/a DEC: -1,029 arcsec/a ±0 arcsec/a in RA
±0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0474 arcsec/a DEC: -1,024 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 0,5 (accuracy: 2 decimals)
source of visual magnitude data Combined magnitude of component stars.

spectral information:

spectral class F5
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star - see source catalog for source

catalogues

source catalogue FK4, catalogue number: 291
Durchmusterung BD+05 1739
Boss General Catalogue 10277
Henry Draper Catalogue 61421

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

position and proper motion:

position (J2000) RA: 7h 39,3min DEC: +5° 14'
proper motion (J2000) RA: -0,71 arcsec/a DEC: 0 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
AB 1896 41 ° '' 0,38 13 F5IV-V SHB 1
AC 1836 often 262° 56,6'' 0,38 11,7 - LAM
1984 17° 148,4''
AD 1925 14 272° 129,2'' 0,38 - - DIC 1
1984 306° 115,3''
AE 1857 3 84° 327,6'' 0,38 - - D 29
1984 69° 444,6''
AF 1984 1 321° 160,8'' 0,38 - - SLE 439

discoverer information:

discoverer code discoverer reference
SHB 1 Shaeberle, J.M. (Astron. J. 17, 53; 1896.)
LAM Lamont, J. von
DIC 1 Dick, J. -
D 29 Dembowski, E. -
SLE 439 Soulie, G. -

notes:

note Alpha CMi. Procyon. P = 40.65yr., a = 4.55", motion direct. Proper motion of A -710 -1023 (FK5). AC: Proper motion of C -003 +001.

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

position:

position (J1950) RA: 7h 36min 41,1sec DEC: +5° 21' 17''

variability informations:

magnitute at max. brightness 0,34
magnitute at min. brightness 0,41
photometric system visual, photovisual or Johnson's V

spectral information

spectral class F5

references

to a study 171860D (designation: ALPHA CMI)

miscanellous

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