3 Camelopardalis
catalogues and names
| catalogues and names | NSV 01681, 3 Cam, HR 1467, HD 29317, SAO 24743, BD +52 865, WDS 04399+5305 |
| constellation | Camelopardalis |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 4h 39min 54.7sec | DEC: +53° 4' 47'' | ||
| position (B1900) | RA: 4h 32min 1.9sec | DEC: +52° 52' 49'' | ||
| proper motion (J2000) | RA: -0.002 arcsec/a | DEC: -0.013 arcsec/a | ||
| radial velocity | -41 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible |
|||
| rotational velocity | <17 km/s (uncertain) (variable) | |||
| trigonometric parallax | -0.008 arcsec | |||
| galactic coordinates | longitude: 153.32° | latitude: 4.26° | ||
magnitude
| visual magnitude | 5.05 (V on UBV Johnson system) |
spectral / color information
| spectral class | K0III |
| B-V-magnitude | 1.07 |
| U-B-magnitude | 0.89 |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 1681 |
| note (category: variability): | ADS 3359A, Cep?, 5.05 - 5.10V, 5d? |
double/multiple star system information
| separation | 3.8 arcsec |
| mag difference (of double or brightest multiple) | 7 |
| note (category: spectroscopic binaries): | 121d, K 28.2k/s, V0 -40.5k/s, asini 46.9. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 4h 39min 54.689sec | DEC: +53° 4' 46.57'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: -0.0003 arcsec/a | DEC: -0.012 arcsec/a | source: 25 | |
| radial velocity | -41 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 153.33° | latitude: 4.26° | ||
magnitude:
| visual | 5.05 (observed) | source: 25 |
| photovisual | 5.3 | source: 2 |
| photographic | 6.3 | source: 16 |
spectral information:
| spectral class | K0 | source: 96 | |
| Morgan-Keenan | K0III | source: 25 | |
| B-magnitude | 6.12 ±0.05 | B-V-magnitude | 1.07 |
| U-magnitude | 7.01 ±0.05 | U-B-magnitude | 0.89 |
double/multiple star system information:
| separation between brightest and second brightest component | 3.8 arcsec |
| magnitude difference between brightest and second brightest component | 7 |
| position angle | 297 ° |
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 | |
| 16 | PPM North and PPM South Catalogs and PPM Supplement |
| Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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: 4h 35min 57.858sec | DEC: +52° 58' 56.12'' | ±0.022 arcsec |
| position (J2000) | RA: 4h 39min 54.709sec | DEC: +53° 4' 46.58'' | |
| proper motion B1950 (FK4) | RA: -0.0001 arcsec/a | DEC: -0.012 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0003 arcsec/a | DEC: -0.013 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.3 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 5658 |
| Durchmusterung | BD+52 865 |
| Boss General Catalogue | 5658 |
| Henry Draper Catalogue | 29317 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 4h 39.9min | DEC: +53° 5' |
| proper motion (J2000) | RA: -0.003 arcsec/a | DEC: -0.012 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 |
| - | 1888 | 5 | 297° | 3.8'' | 5.3 | 12.3 | G9III | BU 1043 |
discoverer information:
| discoverer code | discoverer | reference |
| BU 1043 | Burnham, S.W. | - |
notes:
| note | 3 Cam. A is an eclipsing binary of the W UMa-type. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 4h 35min 57.8sec | DEC: +52° 58' 56'' |
variability informations:
| variability type | CEP: | pulsating variable star |
| magnitute at max. brightness | 5.05 | |
| magnitute amplitude | 0.05 | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K0 |
references
| to a study | 752712D (designation: 3 CAM) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |
variability type description
| variability type | description |
| CEP |
Cepheids. Radially pulsating, high luminosity (classes Ib-II) variables with periods in the range of 1-135 days and amplitudes from several hundredths to 2 mag in V (in the B band, the amplitudes are greater). Spectral type at maximum light is F; at minimum, the types are G-K. The longer the period of light variation,the later is the spectral type. The maximum of the surface-layer expansion velocity almost coinciding with maximum light. |