AX Circini
catalogues and names
| catalogues and names | AX Cir, HR 5527, HD 130701, SAO 252928, CP -63 3436 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 14h 52min 35sec | DEC: -63° 48' 36'' | ||
| position (2000.72) | RA: 14h 52min 39sec | DEC: -63° 48' 46'' | ||
| position (B1900) | RA: 14h 44min 27.3sec | DEC: -63° 23' 48'' | ||
| proper motion (J2000) | RA: -0.024 arcsec/a | DEC: -0.009 arcsec/a | ||
| radial velocity | -21 km/s note: spectroscopic binaries |
|||
| galactic coordinates | longitude: 315.83° | latitude: -4.01° | ||
magnitude
| visual magnitude | 5.87 (V on UBV Johnson system) |
spectral / color information
| spectral class | G3II+B8V |
| B-V-magnitude | 0.72 |
| U-B-magnitude | 0.22 |
| note (category: spectra): | Also classified F2-G2II + B4 and F6IIab + B8V. |
| note (category: colors): | Large color excess. |
variability information
| variable star identification | AX Cir |
| note (category: variability): | CDelta 5.65 - 6.09V, 5.273268d. |
double/multiple star system information
| note (category: double and multiple data): | In Innes catalogue, 6.5, 6.5v sep. 0.5" in 1913. Not confirmed. |
| note (category: spectroscopic binaries): | Secondary B4. SKYLAB indicates cool star with hot companion. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 14h 52min 35.293sec | DEC: -63° 48' 35.48'' | ±0.19 arcsec | source: 16 |
| position (2000.72) | RA: 14h 52min 39sec | DEC: -63° 48' 45'' | JD: 2451806.24 | |
| proper motion (J2000) | RA: -0.0007 arcsec/a | DEC: -0.012 arcsec/a | source: 25 | |
| radial velocity | -21 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 315.83° | latitude: -4.01° | ||
magnitude:
| visual | 5.87 (observed) | source: 25 |
| photovisual | 6.1 | source: 16 |
spectral information:
| spectral class | F5 | source: 96 | |
| Morgan-Keenan | G3II+B8V | source: 25 | |
| B-magnitude | 6.59 ±0.05 | B-V-magnitude | 0.72 |
| U-magnitude | 6.81 ±0.05 | U-B-magnitude | 0.22 |
double/multiple star system information:
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5.65 | +++ | |
| B | 5.87 | F5 | HR 5527, HD 130701, SAO 252928 |
sources:
| 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 | |
| 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 48min 29.863sec | DEC: -63° 36' 17.8'' | ±0.032 arcsec |
| position (2000.72) | RA: 14h 52min 39sec | DEC: -63° 48' 46'' | JD: 2451806.24 |
| position (J2000) | RA: 14h 52min 35.047sec | DEC: -63° 48' 35.82'' | |
| proper motion B1950 (FK4) | RA: -0.0025 arcsec/a | DEC: -0.014 arcsec/a | ±0.009 arcsec/a in RA ±0.007 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0036 arcsec/a | DEC: -0.009 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | +++ |
| 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: 19981 |
| Durchmusterung | CP-63 3436 |
| Boss General Catalogue | 19981 |
| Henry Draper Catalogue | 130701 The "SAO Catalog" entry refers to two consecutive HD numbers, the lower of which is given. |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 14h 48min 29.9sec | DEC: -63° 36' 18'' |
variability informations:
| variability type | DCEP | pulsating variable star |
| magnitute at max. brightness | 5.65 | |
| magnitute at min. brightness | 6.09 | |
| photometric system | visual, photovisual or Johnson's V | |
| epoch for maximum light [JD] | 2438199.54 19. June 1963, 00:57:36 UT |
|
| period [d] | 5.273268 | |
| next maximum light [JD] | 2451809.844708 22. September 2000, 08:16:23 UT |
|
| rising time | 32 % of period |
spectral information
| spectral class | F2-G2II+B4 |
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 'Cape Photographic Durchmusterung' |
miscanellous
| ID in the GCVS catalogue | 23/77 |
| constellation | Circinus |
| notes on existence | The star is equivalent to '0230078 AY'. |
| There are notes in published catalog. | |
variability type description
| variability type | description |
| DCEP | These are the classical cepheids, or Delta Cep-type variables. Comparatively young objects that have left the main sequence and evolved into the instability strip of the Hertzsprung-Russell (H-R) diagram, they obey the well-known Cepheid period-luminosity relation and belong to the young disk population. DCEP stars are present in open clusters. They display a certain relation between the shapes of their light curves and their periods. |