Procyon
catalogues and names
| catalogues and names | Procyon, a CMi, NSV 03672, 10 CMi, HR 2943, HD 61421, SAO 115756, BD +5 1739, 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. |
position, motion, parallax:
| position (J2000) | RA: 7h 39min 18.1sec | DEC: +5° 13' 30'' | ||
| position (B1900) | 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 | |||
| galactic coordinates | longitude: 213.69° | latitude: 13.03° | ||
| 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 | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
| 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 arcsec | ±0.029 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 213.7° | latitude: 13.03° | ||
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:
| 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 (B1950) | 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 B1950 (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 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 7h 34.1min | DEC: +5° 29' |
magnitudes, spectral classes, orbital elements:
| author: | K.A. Strand |
| date of observation: | 1949 |
| magnitude of component A: | 0.35 |
| magnitude of component B: | 0.35 |
| spectral class component B: | F5IV- |
| spectral class component B: | F5IV- |
| period [y]: | 40.65 |
| semi-major axis [arcsec]: | 4.548 |
| inclination [deg]: | 35.7 |
| node [deg]: | 284.3 (ascending) |
| equinox of node: | 2000 |
| eccentricity: | 0.4 |
| time of periastron passage: | 1927.6 |
| dates of ephemeris: | 1 rev. |
| grade: | definitive |
| reference: | Astrophys. J. 113, 1; 1951. |
| notes | The orbit utilizes radial velocities. Two faint stars, each 2' distant, are optical. |
| other name(s) | Procyon |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | 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)). |