n Ceti
catalogues and names
| catalogues and names | n Cet, 78 Cet, HR 754, HD 16161, SAO 110635, BD +4 418, FK5: 1072, WDS 02359+0536 |
| constellation | Cetus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 2h 35min 52.5sec | DEC: +5° 35' 36'' | ||
| position (B1900) | RA: 2h 30min 37.5sec | DEC: +5° 9' 25'' | ||
| proper motion (J2000) | RA: -0.026 arcsec/a | DEC: -0.025 arcsec/a | ||
| radial velocity | 5 km/s note: spectroscopic binaries |
|||
| rotational velocity | <17 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.002 arcsec | |||
| galactic coordinates | longitude: 164.48° | latitude: -48.67° | ||
| note (category: dynamical parallaxes): | 0.005". |
magnitude
| visual magnitude | 4.86 (V on UBV Johnson system) |
spectral / color information
| spectral class | G8III |
| B-V-magnitude | 0.87 |
| U-B-magnitude | 0.53 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
double/multiple star system information
| separation | 8.1 arcsec |
| mag difference (of double or brightest multiple) | 4.8 |
| note (category: double and multiple data): | Binary. Companion 9.08V, +0.56(B-V), +0.19(U-B), F7V. |
miscellaneous information
| note (category: group membership): | Sirius group; UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 2h 35min 52.469sec | DEC: +5° 35' 35.6'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0018 arcsec/a | DEC: -0.025 arcsec/a | source: 25 | |
| radial velocity | 5 km/s | source: 25 | ||
| trigonometric parallax | 0.002 arcsec | - | source: 25 | |
| galactic coord. (B1950) | longitude: 164.49° | latitude: -48.67° | ||
magnitude:
| visual | 4.97 (observed) | source: 25 |
| photovisual | 5 | source: 2 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G8III | source: 25 | |
| B-magnitude | 5.84 ±0.05 | B-V-magnitude | 0.87 |
| U-magnitude | 6.4 ±0.05 | U-B-magnitude | 0.56 |
double/multiple star system information:
| separation between brightest and second brightest component | 8.1 arcsec |
| magnitude difference between brightest and second brightest component | 4.11 |
| position angle | 80 ° |
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: 2h 33min 14.793sec | DEC: +5° 22' 33.99'' | ±0.005 arcsec |
| position (J2000) | RA: 2h 35min 52.456sec | DEC: +5° 35' 35.53'' | |
| proper motion B1950 (FK4) | RA: -0.0021 arcsec/a | DEC: -0.021 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0019 arcsec/a | DEC: -0.025 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | G5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 1072 |
| Durchmusterung | BD+04 418 |
| Boss General Catalogue | 3117 |
| Henry Draper Catalogue | 16161 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 2h 35.9min | DEC: +5° 36' |
| proper motion (J2000) | RA: -0.026 arcsec/a | DEC: -0.025 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 |
| - | 1831 | 23 | 83° | 7.7'' | 4.97 | 9.08 | G3III | STF 281 |
| 1972 | 80° | 8.1'' |
discoverer information:
| discoverer code | discoverer | reference |
| STF 281 | Struve, F.G.W. | - |
notes:
| note | Nu Cet. |