CO Aurigae
catalogues and names |
SKY2000 - Master Star Catalog |
Smithsonian Astrophysical Observatory Star Catalog |
Combined General Catalogue of Variable Stars (Vol. I-III) |
catalogues and names
catalogues and names | CO Aur, HD 40457, SAO 58649, BD +35 1304 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 6h 0min 28.511sec | DEC: +35° 18' 43.84'' | ±0.43 arcsec | source: 16 |
position (2000.72) | RA: 6h 0min 32sec | DEC: +35° 18' 44'' | JD: 2451806.31 | |
proper motion (J2000) | RA: -0.0002 arcsec/a | DEC: -0.004 arcsec/a | source: 16 | |
galactic coord. (B1950) | longitude: 176.09° | latitude: 5.94° |
magnitude:
visual | 7.46 (observed) | source: 30 |
photovisual | 7.8 | source: 2 |
photographic | 8.2 | source: 16 |
spectral information:
spectral class | F5 | source: 96 | |
Morgan-Keenan | F5Ib | source: 98 | |
B-magnitude | 8.33 ±0.043 | B-V-magnitude | 0.67 |
U-magnitude | 8.69 ±0.053 | U-B-magnitude | 0.36 |
variability information:
variability type | 114 |
var. amplitude | 0.62 |
var. period | 1.78 |
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 | |
30 | GCVS, 4th edition |
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88 | |
96 | SAO or HD/HDE Catalog |
Reference from Value 1 or Reference from Value 2 | |
98 | SKYMAP Master Catalog Version 3.7 |
Reference from Value 97 [original data sources Catalog Version 3.7 are identified in SKYMAP Version 3.7] |
data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)
position and proper motion:
position (B1950) | RA: 5h 57min 7.452sec | DEC: +35° 18' 38.61'' | ±0.029 arcsec |
position (2000.72) | RA: 6h 0min 31sec | DEC: +35° 18' 44'' | JD: 2451806.31 |
position (J2000) | RA: 6h 0min 28.489sec | DEC: +35° 18' 43.37'' | |
proper motion B1950 (FK4) | RA: -0.0005 arcsec/a | DEC: -0.011 arcsec/a | ±0.013 arcsec/a in RA ±0.011 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: -0.0006 arcsec/a | DEC: -0.01 arcsec/a | |
source of proper motion data | Determined by comparison of catalog and AGK1 |
magnitude:
visual | 7.8 (accuracy: 1 decimal) |
source of visual magnitude data | Determined by source catalog. |
photographic | 8.2 (accuracy: 1 decimal) |
source of photographic magnitude data | Determined by source catalog. |
spectral information:
spectral class | F5 |
source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
source catalogue | AGK2, Volume 7, catalogue number: 596 |
Durchmusterung | BD+35 1304 |
Henry Draper Catalogue | 40457 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
position (equinox 1950.0) | RA: 5h 57min 7.5sec | DEC: +35° 18' 39'' |
variability informations:
variability type | CEP(B) | pulsating variable star |
magnitute at max. brightness | 7.46 | |
magnitute at min. brightness | 8.08 | |
photometric system | visual, photovisual or Johnson's V | |
period [d] | 1.7841 |
spectral information
spectral class | F5Ib |
references
to a study | Vol. I GCVS (see Kholopov et al. 1985-1988) |
to a chart/photograph | Vol. I GCVS (see Kholopov et al. 1985-1988) |
miscanellous
ID in the GCVS catalogue | 8/115 |
constellation | Auriga |
notes on existence | The star is equivalent to '0080116 CP'. |
There are notes in published catalog. |
variability type description
variability type | description |
CEP(B) | 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. CEP(B) Cepheids (TU Cas, V 367 Sct) displaying the presence of two or more simultaneously operating pulsation modes (usually the fundamental tone with the period P0 and the first overtone P1). The periods P0 are in the range from 2 to 7 days, with the ratio P1/P0 approx. 0.71. |