q Antliae
catalogues and names
| catalogues and names | q Ant, HR 3871, HD 84367, SAO 177908, CD -27 6881, FK5: 366, WDS 09442-2746 |
| constellation | Antlia |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 9h 44min 12.1sec | DEC: -27° 46' 10'' | ||
| position (B1900) | RA: 9h 39min 44.6sec | DEC: -27° 18' 42'' | ||
| proper motion (J2000) | RA: -0.047 arcsec/a | DEC: 0.035 arcsec/a | ||
| radial velocity | 24 km/s note: suspected variable radial velocity |
|||
| trigonometric parallax | 0.053 arcsec | |||
| galactic coordinates | longitude: 259.89° | latitude: 19.06° | ||
magnitude
| visual magnitude | 4.79 (V on UBV Johnson system) |
spectral / color information
| spectral class | A8V+F7II-III |
| B-V-magnitude | 0.51 |
| U-B-magnitude | 0.35 |
| R-I-magnitude |
double/multiple star system information
| separation | 0.1 arcsec |
| mag difference (of double or brightest multiple) | 0.2 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | 5.4 F7V, 5.6 F8V, 18.32y, a = 0.134". Combined mag., colors. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 9h 44min 12.11sec | DEC: -27° 46' 10.3'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0036 arcsec/a | DEC: 0.034 arcsec/a | source: 25 | |
| radial velocity | 24 km/s | source: 25 | ||
| trigonometric parallax | 0.053 arcsec | ±0.005 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 259.9° | latitude: 19.06° | ||
magnitude:
| visual | 4.79 (observed) | source: 25 |
| photovisual | 5 | source: 2 |
| photographic | 5.4 | source: 2 |
spectral information:
| spectral class | F5 | source: 96 | |
| Morgan-Keenan | A8V+F7II-III | source: 25 | |
| B-magnitude | 5.3 ±0.05 | B-V-magnitude | 0.51 |
| U-magnitude | 5.65 ±0.05 | U-B-magnitude | 0.35 |
double/multiple star system information:
| magnitude difference between brightest and second brightest component | 0 |
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 (B1950) | RA: 9h 41min 58.247sec | DEC: -27° 32' 23.32'' | ±0.009 arcsec |
| position (J2000) | RA: 9h 44min 12.118sec | DEC: -27° 46' 10.37'' | |
| proper motion B1950 (FK4) | RA: -0.0037 arcsec/a | DEC: 0.03 arcsec/a | ±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0035 arcsec/a | DEC: 0.034 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | F5p |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 366 |
| Durchmusterung | CD-27 6881 |
| Boss General Catalogue | 13425 |
| Henry Draper Catalogue | 84367 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 9h 44.2min | DEC: -27° 46' |
| proper motion (J2000) | RA: -0.047 arcsec/a | DEC: 0.035 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 |
| - | 1952 | 31 | ° | '' | 5.5 | 5.5 | - | FIN 326 |
discoverer information:
| discoverer code | discoverer | reference |
| FIN 326 | Finsen, W.S. | - |
notes:
| note | Theta Ant. P = 18.3yr., a = 0.13", motion retrograde. Spectrum composite; A8V+F7II-III. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 9h 39.7min | DEC: -27° 19' |
magnitudes, spectral classes, orbital elements:
| author: | W.D. Heintz |
| date of observation: | 1980 |
| magnitude of component A: | 5.4 |
| magnitude of component B: | 5.4 |
| spectral class component B: | F7V |
| spectral class component B: | F7V |
| period [y]: | 18.32 |
| semi-major axis [arcsec]: | 0.134 |
| inclination [deg]: | 124 |
| node [deg]: | 176.8 |
| equinox of node: | 2000 |
| eccentricity: | 0.445 |
| time of periastron passage: | 1965.75 |
| dates of ephemeris: | 1980-1998 |
| grade: | good |
| reference: | Astron. Astrophys. Suppl. 47, 569; 1982. |
| other name(s) | FIN 326, Theta Ant |