66 Aquarii
catalogues and names
| catalogues and names | NSV 14291, 66 Aqr, HR 8649, HD 215167, SAO 165252, BD -19 6324 |
| constellation | Aquarius |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 43min 35.3sec | DEC: -18° 49' 49'' | ||
| position (B1900) | RA: 22h 38min 12.4sec | DEC: -19° 21' 13'' | ||
| proper motion (J2000) | RA: -0.027 arcsec/a | DEC: -0.028 arcsec/a | ||
| radial velocity | 22 km/s | |||
| rotational velocity | <19 km/s | |||
| trigonometric parallax | 0.013 arcsec | |||
| galactic coordinates | longitude: 41.88° | latitude: -59.52° | ||
magnitude
| visual magnitude | 4.69 (V on UBV Johnson system) |
spectral / color information
| spectral class | K4III |
| B-V-magnitude | 1.37 |
| U-B-magnitude | 1.56 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 14291 |
miscellaneous information
| note (category: group membership): | UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 43min 35.24sec | DEC: -18° 49' 49.62'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0021 arcsec/a | DEC: -0.034 arcsec/a | source: 25 | |
| radial velocity | 22 km/s | source: 25 | ||
| trigonometric parallax | 0.013 arcsec | ±0.001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 41.89° | latitude: -59.52° | ||
magnitude:
| visual | 4.69 (observed) | source: 25 |
| photovisual | 4.1 | source: 16 |
spectral information:
| spectral class | K5 | source: 96 | |
| Morgan-Keenan | K4III | source: 25 | |
| B-magnitude | 6.06 ±0.05 | B-V-magnitude | 1.37 |
| U-magnitude | 7.62 ±0.05 | U-B-magnitude | 1.56 |
variability information:
| variability type | 9 |
| var. amplitude | 0.05 |
sources:
| 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 | |
| 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: 22h 40min 53.937sec | DEC: -19° 5' 33.2'' | ±0.023 arcsec |
| position (J2000) | RA: 22h 43min 35.256sec | DEC: -18° 49' 49.36'' | |
| proper motion B1950 (FK4) | RA: -0.002 arcsec/a | DEC: -0.024 arcsec/a | ±0.004 arcsec/a in RA ±0.004 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0019 arcsec/a | DEC: -0.028 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.9 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 31708 |
| Durchmusterung | BD-19 6324 |
| Boss General Catalogue | 31708 |
| Henry Draper Catalogue | 215167 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 22h 40min 53.9sec | DEC: -19° 5' 33'' |
variability informations:
| magnitute at max. brightness | 4.66 |
| magnitute at min. brightness | 4.71 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K4 |
references
| to a study | 0807D (designation: 176G AQR) |