Talitha
catalogues and names
| catalogues and names | Talitha, i UMa, NSV 04329, 9 UMa, HR 3569, HD 76644, SAO 42630, BD +48 1707, FK5: 335, WDS 08592+4803A |
| other names | Talita |
| constellation | Ursa Major |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Talitha; Talita. |
position, motion, parallax:
| position (J2000) | RA: 8h 59min 12.4sec | DEC: +48° 2' 30'' | ||
| position (B1900) | RA: 8h 52min 21.8sec | DEC: +48° 26' 4'' | ||
| proper motion (J2000) | RA: -0.444 arcsec/a | DEC: -0.226 arcsec/a | ||
| radial velocity | 9 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible |
|||
| rotational velocity | 151 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.075 arcsec | |||
| galactic coordinates | longitude: 171.51° | latitude: 40.84° | ||
| note (category: dynamical parallaxes): | 0.066". |
magnitude
| visual magnitude | 3.14 (V on UBV Johnson system) |
spectral / color information
| spectral class | A7IV |
| B-V-magnitude | 0.19 |
| U-B-magnitude | 0.07 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 4329 |
| note (category: variability): | ADS 7114A, S, 3.12 - 3.18V, 0.071d. |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 3.9 arcsec |
| mag difference (of double or brightest multiple) | 7.2 |
| component ID | AB |
| note (category: double and multiple data): | BC 10.8, 11.0, 39.69y, a = 0.68". BC is dM1. BCxA: 817.91y, a = 9.092". Separation rapidly decreasing. ADS 7114Aa, 11.02y, a = 90.354". This is the SB pair. |
| note (category: spectroscopic binaries): | ADS 7114A, 4028d, K 6.0k/s, V0 +6.8k/s, asini 310. Unresolved by speckle interferometry 1982.18. |
miscellaneous information
| note (category: group membership): | Hyades group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 8h 59min 12.442sec | DEC: +48° 2' 30.09'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0443 arcsec/a | DEC: -0.226 arcsec/a | source: 25 | |
| radial velocity | 9 km/s | source: 25 | ||
| trigonometric parallax | 0.075 arcsec | ±0.007 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 171.51° | latitude: 40.84° | ||
magnitude:
| visual | 3.14 (observed) | source: 25 |
| photovisual | 3.1 | source: 2 |
spectral information:
| spectral class | A5 | source: 96 | |
| Morgan-Keenan | A7IV | source: 25 | |
| B-magnitude | 3.33 ±0.05 | B-V-magnitude | 0.19 |
| U-magnitude | 3.4 ±0.05 | U-B-magnitude | 0.07 |
double/multiple star system information:
| separation between brightest and second brightest component | 4.5 arcsec |
| magnitude difference between brightest and second brightest component | 6.1 |
| position angle | 24 ° |
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: 8h 55min 47.626sec | DEC: +48° 14' 22.05'' | ±0.004 arcsec |
| position (J2000) | RA: 8h 59min 12.452sec | DEC: +48° 2' 29.76'' | |
| proper motion B1950 (FK4) | RA: -0.0443 arcsec/a | DEC: -0.235 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0442 arcsec/a | DEC: -0.229 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 3.1 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | A5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 335 |
| Durchmusterung | BD+48 1707 |
| Boss General Catalogue | 12407 |
| Henry Draper Catalogue | 76644 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 8h 59.2min | DEC: +48° 3' |
| proper motion (J2000) | RA: -0.444 arcsec/a | DEC: -0.226 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 |
| A-BC | 1841 | 61 | 350° | 10.7'' | 3.1 | 9.2 | A7IV | HJ 2477 |
| 1971 | 24° | 4.5'' | ||||||
| BC | 1903 | 53 | ° | '' | 9.9 | 10.1 | M1 | HU 628 |
discoverer information:
| discoverer code | discoverer | reference |
| HJ 2477 | Herschel, J. | - |
| HU 628 | Hussey, W.J. | - |
notes:
| note | Iota UMa. A is a Delta Scuti-type variable and spectroscopic binary. A-BC: A premature orbit has been computed. BC: P = 39.7yr., a = 0.68", motion retrograde. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 8h 52.4min | DEC: +48° 26' |
magnitudes, spectral classes, orbital elements:
| author: | J. Hopmann | O.J. Eggen |
| date of observation: | 1962 | |
| magnitude of component A: | 3.14 | 10.8 |
| magnitude of component B: | 3.14 | 10.8 |
| spectral class component B: | A7IV | dM1 |
| spectral class component B: | A7IV | dM1 |
| period [y]: | 817.91 | 39.69 |
| semi-major axis [arcsec]: | 9.092 | 0.68 |
| inclination [deg]: | 57.8 | 108 |
| node [deg]: | 4.8 | 21 |
| eccentricity: | 0.79 | 0.32 |
| time of periastron passage: | 1993.9 | 1918.58 |
| grade: | indeterminate | good |
| reference: | Mitt. Sternw. Wien 14, 18; 1973. | Ann. Rev. Astron. Astrophys. 5, 132; 1967. |
| notes | Quadruple. Star A = Iota UMa, a Delta Scuti type variable and a single-lined spectroscopic binary, P = 11.03 yr. BC is currently too close to A to be observed. |
| other name(s) | HU 628 BC |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 8h 55min 47.6sec | DEC: +48° 14' 22'' |
variability informations:
| variability type | S |
| magnitute at max. brightness | 3.12 |
| magnitute at min. brightness | 3.18 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | A7 |
references
| to a study | 631147D (designation: IOTA UMA) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |
variability type description
| variability type | description |
| S |
Unstudied variable stars with rapid light changes. |