HR 6377
catalogues and names
| catalogues and names | HR 6377, HD 155103, SAO 65812, BD +36 2827, WDS 17080+3556A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 17h 8min 2sec | DEC: +35° 56' 7'' | ||
| position (B1900) | RA: 17h 4min 29.3sec | DEC: +36° 3' 54'' | ||
| proper motion (J2000) | RA: -0.024 arcsec/a | DEC: -0.01 arcsec/a | ||
| radial velocity | -30 km/s | |||
| rotational velocity | 82 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.015 arcsec | |||
| galactic coordinates | longitude: 59.31° | latitude: 35.58° | ||
| note (category: dynamical parallaxes): | 0.017". |
magnitude
| visual magnitude | 5.39 (V on UBV Johnson system) |
spectral / color information
| spectral class | A5-F1III/IVm s |
| B-V-magnitude | 0.31 |
| U-B-magnitude | 0.05 |
| R-I-magnitude |
| note (category: spectra): | K/H/met give A5/F0V/F2. |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 0.1 arcsec |
| mag difference (of double or brightest multiple) | 0.1 |
| component ID | AB |
| note (category: double and multiple data): | AB 6.2 A9III-IV, 6.2 A9III-IV, 8.159y, a = 0.116". Mean mass 2.7 solar. Alternate orbit, 16.08y, a = 0.167". Combined colors. Speckle interferometry indicates companion 1 mag. fainter than primary at 0.079". However, speckle observations 1986.46 (at 7000 Ang.) give sep. 0.15". |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 17h 8min 2.091sec | DEC: +35° 56' 6.65'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: -0.0014 arcsec/a | DEC: -0.016 arcsec/a | source: 25 | |
| radial velocity | -30 km/s | source: 25 | ||
| trigonometric parallax | 0.015 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 59.31° | latitude: 35.58° | ||
magnitude:
| visual | 5.39 (observed) | source: 25 |
| photovisual | 5.4 | source: 2 |
| photographic | 5.5 | source: 16 |
spectral information:
| spectral class | A5 | source: 96 | |
| Morgan-Keenan | A5-F1III/IVms | source: 25 | |
| B-magnitude | 5.7 ±0.05 | B-V-magnitude | 0.31 |
| U-magnitude | 5.75 ±0.05 | U-B-magnitude | 0.05 |
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 | |
| 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 | |
| 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: 17h 6min 15.553sec | DEC: +35° 59' 56.68'' | ±0.02 arcsec |
| position (J2000) | RA: 17h 8min 2.042sec | DEC: +35° 56' 7.2'' | |
| proper motion B1950 (FK4) | RA: -0.0023 arcsec/a | DEC: -0.012 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0019 arcsec/a | DEC: -0.01 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A5 |
| 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: 23132 |
| Durchmusterung | BD+36 2827 |
| Boss General Catalogue | 23132 |
| Henry Draper Catalogue | 155103 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 17h 8min | DEC: +35° 56' |
| proper motion (J2000) | RA: -0.017 arcsec/a | DEC: -0.016 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 | 1905 | often | ° | '' | 6.1 | 6.1 | A5m | HU 1176 |
| AB-C | 1892 | 9 | 143° | 19.5'' | 5.37 | 12.1 | - | HO 412 |
| 1982 | 133° | 20.5'' |
discoverer information:
| discoverer code | discoverer | reference |
| HU 1176 | Hussey, W.J. | - |
| HO 412 | Hough, G.W. | - |
notes:
| note | The speckle observations now resolve the former am- biguity: P = 8.13yr., a = 0.112", motion retrograde. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 17h 4.5min | DEC: +36° 4' |
magnitudes, spectral classes, orbital elements:
| author: | B. Cester | R.H. Wilson |
| date of observation: | 1963 | 1934 |
| magnitude of component A: | 6.1 | 6.1 |
| magnitude of component B: | 6.1 | 6.1 |
| spectral class component B: | A5m | A5m |
| spectral class component B: | A5m | A5m |
| period [y]: | 8.159 | 16.08 |
| semi-major axis [arcsec]: | 0.116 | 0.167 |
| inclination [deg]: | 126 | 109.7 |
| node [deg]: | 114.3 | 92.6 |
| equinox of node: | 1920 | |
| eccentricity: | 0.38 | 0.144 |
| time of periastron passage: | 1950.69 | 1920.89 |
| dates of ephemeris: | 2 rev. | 1936-1945 |
| grade: | reliable (ambiguous) | preliminary (ambiguous) |
| reference: | Mem. Soc. Astron. Ital. 35, 345; 1964. | Pub. Astron. Soc. Pacific 48, 309; 1936. |
| other name(s) | HU 1176, c Her |