V1165 Aquilae
catalogues and names
catalogues and names | V1165 Aql |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
position (equinox 1950.0) | RA: 19h 52min 32sec | DEC: +12° 38' 0'' | ± 1 sec / ± 0.1 arcmin |
variability informations:
variability type | CEP: | pulsating variable star |
magnitute at max. brightness | 10 | |
magnitute at min. brightness | 10.5 | |
photometric system | photographic magnitudes | |
epoch for maximum light [JD] | 2436755.472 5. July 1959, 23:19:41 UT |
|
period [d] | 6.82957 | |
next maximum light [JD] | 2451807.84428 20. September 2000, 08:15:46 UT |
|
rising time | 30 % of period (uncertain) |
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 | 5/1165 |
constellation | Aquila |
notes on existence | The star is equivalent to '0051166 V1166'. |
There are notes in published catalog. |
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. |