HR 9074
catalogues and names
| catalogues and names | HR 9074, HD 224635, SAO 73656, BD +32 4747, WDS 23595+3343A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 23h 59min 29.2sec | DEC: +33° 43' 28'' | ||
| position (B1900) | RA: 23h 54min 23.5sec | DEC: +33° 10' 12'' | ||
| proper motion (J2000) | RA: -0.06 arcsec/a | DEC: -0.08 arcsec/a | ||
| radial velocity | -8 km/s note: suspected variable radial velocity |
|||
| rotational velocity | 7 km/s (uncertain) (variable) | |||
| dynamical parallax | 0.051 arcsec | |||
| galactic coordinates | longitude: 110.72° | latitude: -27.91° | ||
magnitude
| visual magnitude | 6.58 (original HR magnitude) |
spectral / color information
| spectral class | G0V |
| B-V-magnitude | 0.55 |
| U-B-magnitude | -0.01 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 1.5 arcsec |
| mag difference (of double or brightest multiple) | 0.2 |
| component ID | AB |
| note (category: double and multiple data): | AB 6.5 G0V, 6.7 G0V, 355y, a = 3.125". C 12.9V at 82". Blended mag. for HR 9074/5, 5.81V; colors for combined light. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 23h 59min 29.27sec | DEC: +33° 43' 26.93'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: -0.0037 arcsec/a | DEC: -0.097 arcsec/a | source: 25 | |
| radial velocity | -8 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 110.73° | latitude: -27.91° | ||
magnitude:
| visual | 6.49 (observed) | source: 25 |
| photovisual | 6.6 | source: 2 |
| photographic | 7.1 | source: 16 |
spectral information:
| spectral class | F8 | source: 29 | |
| Morgan-Keenan | G0V | source: 25 | |
| B-magnitude | 7.02 ±0.05 | B-V-magnitude | 0.53 |
| U-magnitude | 7 ±0.05 | U-B-magnitude | -0.02 |
double/multiple star system information:
| separation between brightest and second brightest component | 1.8 arcsec |
| magnitude difference between brightest and second brightest component | 0.1 |
| position angle | 324 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 6.49 | F8 | HR 9074, HD 224635, SAO 73656 |
| B | 6.66 | - | HR 9075, HD 224636, SAO 73656 |
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 | |
| 16 | PPM North and PPM South Catalogs and PPM Supplement |
| Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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 | |
| 29 | SAOJ2000 |
| SAO on FK5 at J2000, 1989 | |
data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)
position and proper motion:
| position (B1950) | RA: 23h 56min 56.015sec | DEC: +33° 26' 50.38'' | ±0.027 arcsec |
| position (J2000) | RA: 23h 59min 29.194sec | DEC: +33° 43' 28.45'' | |
| proper motion B1950 (FK4) | RA: -0.0049 arcsec/a | DEC: -0.075 arcsec/a | ±0.006 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0048 arcsec/a | DEC: -0.08 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F8 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 33268 |
| Durchmusterung | BD+32 4747 |
| Boss General Catalogue | 33268 |
| Henry Draper Catalogue | 224635 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: 23h 59.5min | DEC: +33° 43' |
| proper motion (J2000) | RA: -0.047 arcsec/a | DEC: -0.097 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 |
| AB | 1830 | often | 189° | 4'' | 6.5 | 6.6 | F8V | STF3050 |
| 1993 | 324° | 1.8'' | ||||||
| AC | 1909 | 2 | 289° | 82.2'' | 6.6 | 12.9 | - | STF3050 |
| 1960 | 293° | 81.2'' |
discoverer information:
| discoverer code | discoverer | reference |
| STF3050 | Struve, F.G.W. | - |
notes:
| note | P = 350yr., a = 3.19", motion direct. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 23h 54.4min | DEC: +33° 10' |
magnitudes, spectral classes, orbital elements:
| author: | W.D. Heintz |
| date of observation: | 1972 |
| magnitude of component A: | 6.5 |
| magnitude of component B: | 6.5 |
| spectral class component B: | G0V |
| spectral class component B: | G0V |
| period [y]: | 355 |
| semi-major axis [arcsec]: | 3.125 |
| inclination [deg]: | 65 |
| node [deg]: | 349.8 (ascending) |
| equinox of node: | 2000 |
| eccentricity: | 0.56 |
| time of periastron passage: | 2023 |
| dates of ephemeris: | 1974-1992 |
| grade: | preliminary |
| reference: | Astron. J. 79, 397; 1974. |
| other name(s) | STF 3050 |