CP Bootis
catalogues and names
| catalogues and names | CP Boo, HR 5441, HD 127986, SAO 64212, BD +37 2545 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 14h 33min 20.3sec | DEC: +36° 57' 34'' | ||
| position (B1900) | RA: 14h 29min 15sec | DEC: +37° 24' 3'' | ||
| proper motion (J2000) | RA: -0.004 arcsec/a | DEC: -0.057 arcsec/a | ||
| radial velocity | 2 km/s | |||
| rotational velocity | =<10 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 63.89° | latitude: 66.37° | ||
magnitude
| visual magnitude | 6.43 (HR magnitude reduced to the UBV system) |
spectral / color information
| spectral class | F8IV w |
| note (category: spectra): | Also classified F6III. |
variability information
| variable star identification | CP Boo |
| note (category: variability): | Delta Sct? Amp. 0.02V, over 3 hours. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 14h 33min 20.27sec | DEC: +36° 57' 32.5'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: 0 arcsec/a | DEC: -0.074 arcsec/a | source: 25 | |
| radial velocity | 2 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 63.88° | latitude: 66.37° | ||
magnitude:
| visual | 6.4 (observed) | source: 25 |
| photovisual | 6.4 | source: 2 |
| photographic | 6.9 | source: 16 |
spectral information:
| spectral class | F5 | source: 96 | |
| Morgan-Keenan | F8IVw | source: 25 | |
| B-magnitude | 6.91 ±0.05 | B-V-magnitude | 0.51 |
| U-magnitude | 6.98 ±0.05 | U-B-magnitude | 0.07 |
variability information:
| variability type | 10 |
| var. amplitude | 0.02 |
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 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994 | |
| 30 | GCVS, 4th edition |
| Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 14h 31min 17.622sec | DEC: +37° 10' 45.79'' | ±0.034 arcsec |
| position (J2000) | RA: 14h 33min 20.252sec | DEC: +36° 57' 34.23'' | |
| proper motion B1950 (FK4) | RA: -0.0006 arcsec/a | DEC: -0.061 arcsec/a | ±0.006 arcsec/a in RA ±0.005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0003 arcsec/a | DEC: -0.057 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 19636 |
| Durchmusterung | BD+37 2545 |
| Boss General Catalogue | 19636 |
| Henry Draper Catalogue | 127986 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 14h 31min 17.6sec | DEC: +37° 10' 46'' |
variability informations:
| variability type | DSCTC: | pulsating variable star |
| magnitute at max. brightness | 6.9 | |
| magnitute amplitude | 0.02 | |
| photometric system |
spectral information
| spectral class | F5 |
references
| to a study | Vol. I GCVS (see Kholopov et al. 1985-1988) |
| to a chart/photograph | no chart is avaible, but the star is contained in the 'Bonner Durchmusterung' |
miscanellous
| ID in the GCVS catalogue | 9/116 |
| constellation | Bootes |
| notes on existence | The star is equivalent to '0090117 CQ'. |
| There are notes in published catalog. | |
variability type description
| variability type | description |
| DSCTC | Variables of the Delta Scuti type. These are pulsating variables of spectral types A0-F5 III-V displaying light amplitudes from 0.003 to 0.9 mag in V (usually several hundredths of a magnitude) and periods from 0.01 to 0.2 days. The shapes of the light curves, periods, and amplitudes usually vary greatly. Radial as well as nonradial pulsations are observed. The variability of some members of this type appears sporadically and sometimes completely ceases, this being a consequence of strong amplitude modulation with the lower value of the amplitude not exceeding 0.001 mag in some cases. The maximum of the surface layer expansion does not lag behind the maximum light for more than 0.1 periods. DSCT stars are representatives of the galactic disk (flat component) and are phenomenologically close to the SX Phe variables. DSCTC Low amplitude group of Delta Sct variables (light amplitude <0.1 mag in V). The majority of this type's representatives are stars of luminosity class V; objects of this subtype generally are representative of the Delta Sct variables in open clusters. |