HR 1771
catalogues and names
| catalogues and names | HR 1771, HD 35162, SAO 170351, CD -24 3023 A, WDS 05218-2446A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 5h 21min 46.2sec | DEC: -24° 46' 23'' | ||
| position (B1900) | RA: 5h 17min 39.9sec | DEC: -24° 52' 12'' | ||
| proper motion (J2000) | RA: -0.024 arcsec/a | DEC: -0.013 arcsec/a | ||
| radial velocity | 5 km/s | |||
| trigonometric parallax | 0.004 arcsec | |||
| galactic coordinates | longitude: 227.3° | latitude: -29.95° | ||
| note (category: dynamical parallaxes): | 0.011". |
magnitude
| visual magnitude | 5.06 (V on UBV Johnson system) |
spectral / color information
| spectral class | G7II-III+A7IV-V |
| B-V-magnitude | 0.67 |
| U-B-magnitude | 0.16 |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 3.1 arcsec |
| mag difference (of double or brightest multiple) | 1.5 |
| component ID | AB |
| note (category: double and multiple data): | AB binary; C, 9.2v K0 at 61" optical. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 5h 21min 46.315sec | DEC: -24° 46' 22.46'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0017 arcsec/a | DEC: -0.007 arcsec/a | source: 25 | |
| radial velocity | 5 km/s | source: 25 | ||
| trigonometric parallax | 0.004 arcsec | - | source: 25 | |
| galactic coord. (B1950) | longitude: 227.3° | latitude: -29.95° | ||
magnitude:
| visual | 5.06 (observed) | source: 25 |
| photovisual | 5.5 | source: 2 |
| photographic | 6 | source: 2 |
spectral information:
| spectral class | G0 | source: 96 | |
| Morgan-Keenan | G7II-III | source: 25 | |
| B-magnitude | 5.73 ±0.05 | B-V-magnitude | 0.67 |
| U-magnitude | 5.89 ±0.05 | U-B-magnitude | 0.16 |
double/multiple star system information:
| separation between brightest and second brightest component | 3.5 arcsec |
| magnitude difference between brightest and second brightest component | 1.2 |
| position angle | 94 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5.06 | G0 | HR 1771, HD 35162, SAO 170351 |
| B | 6.79 | A3 | |
| C | 9.6 | K0 |
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 | |
| 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: 5h 19min 42.994sec | DEC: -24° 49' 13.01'' | ±0.032 arcsec |
| position (J2000) | RA: 5h 21min 46.224sec | DEC: -24° 46' 22.72'' | |
| proper motion B1950 (FK4) | RA: -0.0021 arcsec/a | DEC: -0.013 arcsec/a | ±0.006 arcsec/a in RA ±0.005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0018 arcsec/a | DEC: -0.013 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | G0 |
| 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: 6596 |
| Durchmusterung | CD-24 3023A |
| Boss General Catalogue | 6596 |
| Henry Draper Catalogue | 35162 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 5h 21.8min | DEC: -24° 46' |
| proper motion (J2000) | RA: -0.01 arcsec/a | DEC: -0.015 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 | 1837 | 60 | 110° | 3.2'' | 5.4 | 6.6 | G0 | HJ 3752 |
| 1983 | 94° | 3.5'' | ||||||
| AC | 1837 | 6 | 106° | 58.8'' | 5.5 | 9.2 | G0 | HJ 3752 |
| 1977 | 104° | 63.2'' |
discoverer information:
| discoverer code | discoverer | reference |
| HJ 3752 | Herschel, J. | - |
notes:
| note | Spectrum composite; G7II-III+A7IV-V. |