Kitalpha
| catalogues and names | Kitalpha, a Equ, 8 Equ, HR 8131, HD 202447, SAO 126662, FK5: 800, WDS 21158+0515 |
| other names | Kitel Phard, Kitalphar |
| constellation | Equuleus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Kitalpha; Kitel Phard; Kitalphar. |
position, motion, parallax:
| position (J2000) | RA: 21h 15min 49,4sec | DEC: +5° 14' 52'' |
| position (J1900) | RA: 21h 10min 49,5sec | DEC: +4° 50' 4'' |
| proper motion (J2000) | RA: 0,059 arcsec/a | DEC: -0,088 arcsec/a |
| radial velocity | -16 km/s note: spectroscopic binaries note: orbital data avaible |
|
| rotational velocity | =<50 km/s (uncertain) (variable) | |
| trigonometric parallax | 0,021 arcsec | |
magnitude
| visual magnitude | 3,92 (V on UBV Johnson system) |
spectral / color information
| spectral class | G0III+A5V |
| B-V-magnitude | 0,53 |
| U-B-magnitude | 0,29 |
| R-I-magnitude | 0,35 |
| note (category: spectra): | Oxygen deficient relative to magnesium. Also classified G2II-III + A4V. |
double/multiple star system information
| separation | 0,1 arcsec |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | Sep. 0.08". May be only single star. |
| note (category: spectroscopic binaries): | 98.81d, K1 15.67k/s, K2 12.49k/s, V0 -17.8k/s, m1sin3i 0.102, m2sin3i 0.127, asini 21.3. Unresolved by speckle interferometry. vsini both components =<50k/s. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 21h 15min 49,439sec | DEC: +5° 14' 52,25'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: 0,0039 arcsec/a | DEC: -0,088 arcsec/a | source: 25 | |
| radial velocity | -16 km/s | source: 25 | ||
| trigonometric parallax | 0,021 | ±0,002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 56,38° | latitude: -28,71° | ||
| GCI unit vector (J2000) | X: 0,751044 | Y: -0,653886 | Z: 0,091464 | |
magnitude:
| visual | 3,92 (observed) | source: 25 |
| photovisual | 4,1 | source: 2 |
spectral information:
| spectral class | F8 | source: 96 | |
| Morgan-Keenan | G0III | source: 25 | |
| B-magnitude | 4,45 ±0,05 | B-V-magnitude | 0,53 |
| U-magnitude | 4,74 ±0,05 | U-B-magnitude | 0,29 |
double/multiple star system information:
| separation between brightest and second brightest component | 0,1 arcsec |
| position angle | 240 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 3,92 | F8 | Kitalpha, a Equulei, 8 Equ, HR 8131, HD 202447, SAO 126662 |
| B | 3,93 | +++ |
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 | |
| 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 | |
| 19 | WDS Catalog |
| Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996 | |
| 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 (J1950) | RA: 21h 13min 19,44sec | DEC: +5° 2' 24,35'' | ±0,004 arcsec |
| position (J2000) | RA: 21h 15min 49,441sec | DEC: +5° 14' 52,22'' | |
| proper motion J1950 (FK4) | RA: 0,0038 arcsec/a | DEC: -0,084 arcsec/a | ±0,001 arcsec/a in RA ±0,001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,004 arcsec/a | DEC: -0,088 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4,1 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | +++ |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 800 |
| Durchmusterung | BD+04 4635 |
| Boss General Catalogue | 29735 |
| Henry Draper Catalogue | 202447 The "SAO Catalog" entry refers to two consecutive HD numbers, the lower of which is given. |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 21h 15,8min | DEC: +5° 15' |
| proper motion (J2000) | RA: 0,059 arcsec/a | DEC: -0,088 arcsec/a |
double/multiple star system information:
| component | year | number of measures | position angle | angular separation | magnitude of 1st component | magnitude of 2nd component | spectral class(es) | discoverer code |
| - | 1949 | 1 | 240° | 0,1'' | 3,92 | - | G0III+A5V | WRH |
discoverer information:
| discoverer code | discoverer | reference |
| WRH | Wilson, R.H. |
notes:
| note | Alpha Equ. Duplicity doubtful. |