k Pavonis
| catalogues and names | k Pav, kap Pav, HR 7107, HD 174694, SAO 254413, FK5: 3505 |
| constellation | Pavo |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 18h 56min 57sec | DEC: -67° 14' 1'' |
| position (J1900) | RA: 18h 46min 38,4sec | DEC: -67° 21' 31'' |
| proper motion (J2000) | RA: -0,01 arcsec/a | DEC: 0,012 arcsec/a |
| radial velocity | 38 km/s note: variable radial velocity |
|
| trigonometric parallax | 0,01 arcsec | |
magnitude
| visual magnitude | 4,44 (V on UBV Johnson system) |
spectral / color information
| spectral class | F5I-II |
| B-V-magnitude | 0,71 |
| U-B-magnitude | 0,6 |
variability information
| variable star identification | Kap Pav |
| note (category: variability): | CW 3.94 - 4.75V, 9.088d. Period changes. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 18h 56min 56,998sec | DEC: -67° 14' 0,79'' | ±0,22 arcsec | source: 15 |
| proper motion (J2000) | RA: -0,0017 arcsec/a | DEC: 0,012 arcsec/a | source: 25 | |
| radial velocity | 38 km/s | source: 25 | ||
| trigonometric parallax | 0,01 | ±0,001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 328,29° | latitude: -25,39° | ||
| GCI unit vector (J2000) | X: 0,095173 | Y: -0,37509 | Z: -0,92209 | |
magnitude:
| visual | 3,91 (observed) | source: 30 |
spectral information:
| spectral class | F5 | source: 96 | |
| Morgan-Keenan | F5I-II | source: 25 | |
| B-magnitude | 5,15 ±0,05 | B-V-magnitude | 0,71 |
| U-magnitude | 5,75 ±0,05 | U-B-magnitude | 0,6 |
variability information:
| variability type | 113 |
| var. amplitude | 0,87 |
| var. period | 9,09 |
| var. epoch | 2440140 10. October 1968, 12:00:00 UT |
| next max light | 2451629,76 26. March 2000, 06:14:24 UT |
sources:
| 15 | FK5, FK5 Extension and FK5 Supplement |
| Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991 | |
| 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 | |
| 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 (J1950) | RA: 18h 51min 48,301sec | DEC: -67° 17' 57,08'' | ±0,028 arcsec |
| position (J2000) | RA: 18h 56min 57,014sec | DEC: -67° 14' 0,81'' | |
| proper motion J1950 (FK4) | RA: 0 arcsec/a | DEC: 0,013 arcsec/a | ±0,006 arcsec/a in RA ±0,005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0016 arcsec/a | DEC: 0,012 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4,2 (accuracy: 1 decimal) |
| source of visual magnitude data | Source cited in source catalog introduction. |
spectral information:
| spectral class | F5p |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Variable star in visual magnitude in source catalog |
catalogues
| source catalogue | GC, catalogue number: 25930 |
| Durchmusterung | CP-67 3603 |
| Boss General Catalogue | 25930 |
| Henry Draper Catalogue | 174694 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (J1950) | RA: 18h 51min 48,3sec | DEC: -67° 17' 57'' |
variability informations:
| variability type | CEP | pulsating variable star |
| magnitute at max. brightness | 3,91 | |
| magnitute at min. brightness | 4,78 | |
| photometric system | visual, photovisual or Johnson's V | |
| epoch for maximum light [JD] | 2440140,167 10. October 1968, 16:00:29 UT |
|
| period [d] | 9,09423 | |
| next maximum light [JD] | 2451626,17949 22. March 2000, 16:18:28 UT |
|
| rising time | 44 % of period |
spectral information
| spectral class | F5-G5I-II |
references
| to a study | the main characteristics of the star was determined by the authors themselves |
| to a chart/photograph | Vol. I GCVS (see Kholopov et al. 1985-1988) |
miscanellous
| ID in the GCVS catalogue | 61/9010 |
| constellation | Pavo |
| notes on existence | The star is equivalent to '0619011 lam'. |
| 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. |