e Reticuli
catalogues and names
| catalogues and names | e Ret, HR 1355, HD 27442, SAO 233463, CP -59 324, WDS 04165-5918 |
| constellation | Reticulum |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 4h 16min 28.9sec | DEC: -59° 18' 7'' | ||
| position (B1900) | RA: 4h 14min 45.4sec | DEC: -59° 32' 33'' | ||
| proper motion (J2000) | RA: -0.051 arcsec/a | DEC: -0.164 arcsec/a | ||
| radial velocity | 29 km/s | |||
| trigonometric parallax | 0.067 arcsec | |||
| galactic coordinates | longitude: 270.2° | latitude: -42.56° | ||
magnitude
| visual magnitude | 4.44 (V on UBV Johnson system) |
spectral / color information
| spectral class | K2IVa |
| B-V-magnitude | 1.08 |
| U-B-magnitude | 1.07 |
| R-I-magnitude |
double/multiple star system information
| separation | 13.8 arcsec |
| mag difference (of double or brightest multiple) | 8.1 |
| note | Worley (1978) update of the IDS |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 4h 16min 29.091sec | DEC: -59° 18' 7.91'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0045 arcsec/a | DEC: -0.166 arcsec/a | source: 25 | |
| radial velocity | 29 km/s | source: 25 | ||
| trigonometric parallax | 0.067 arcsec | ±0.007 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 270.2° | latitude: -42.56° | ||
magnitude:
| visual | 4.44 (observed) | source: 25 |
| photovisual | 4.1 | source: 16 |
| photographic | 5.5 | source: 2 |
spectral information:
| spectral class | K2 | source: 96 | |
| Morgan-Keenan | K2IVa | source: 25 | |
| B-magnitude | 5.52 ±0.05 | B-V-magnitude | 1.08 |
| U-magnitude | 6.59 ±0.05 | U-B-magnitude | 1.07 |
double/multiple star system information:
| separation between brightest and second brightest component | 13.7 arcsec |
| magnitude difference between brightest and second brightest component | 8.1 |
| position angle | 35 ° |
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: 4h 15min 36.943sec | DEC: -59° 25' 18.3'' | ±0.023 arcsec |
| position (J2000) | RA: 4h 16min 28.922sec | DEC: -59° 18' 7.13'' | |
| proper motion B1950 (FK4) | RA: -0.0067 arcsec/a | DEC: -0.162 arcsec/a | ±0.004 arcsec/a in RA ±0.004 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0067 arcsec/a | DEC: -0.164 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K2 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 5194 |
| Durchmusterung | CP-59 324 |
| Boss General Catalogue | 5194 |
| Henry Draper Catalogue | 27442 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 4h 16.5min | DEC: -59° 18' |
| proper motion (J2000) | RA: -0.043 arcsec/a | DEC: -0.175 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 |
| - | 1930 | 2 | 35° | 13.7'' | 4.44 | 12.5 | K2IVa | JSP 56 |
discoverer information:
| discoverer code | discoverer | reference |
| JSP 56 | Jessup, M.K. | - |
notes:
| note | Epsilon Ret. |