z2Reticuli
catalogues and names | z2Ret, HR 1010, HD 20807, SAO 248774, WDS 03182-6230A |
constellation | Reticulum |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
position (J2000) | RA: 3h 18min 12,9sec | DEC: -62° 30' 23'' |
position (J1900) | RA: 3h 16min 2,3sec | DEC: -62° 53' 17'' |
proper motion (J2000) | RA: 1,336 arcsec/a | DEC: 0,645 arcsec/a |
radial velocity | 12 km/s | |
trigonometric parallax | 0,091 arcsec |
magnitude
visual magnitude | 5,24 (V on UBV Johnson system) |
spectral / color information
spectral class | G1V |
B-V-magnitude | 0,6 |
U-B-magnitude | 0 |
R-I-magnitude | 0,34 |
double/multiple star system information
separation | 309,6 arcsec |
mag difference (of double or brightest multiple) | 0,3 |
note | Worley (1978) update of the IDS |
note (category: double and multiple data): | CPM with HR 1006. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 3h 18min 13,074sec | DEC: -62° 30' 22,17'' | ±0,19 arcsec | source: 16 |
proper motion (J2000) | RA: 0,1978 arcsec/a | DEC: 0,66 arcsec/a | source: 25 | |
radial velocity | 12 km/s | source: 25 | ||
trigonometric parallax | 0,091 | ±0,009 arcsec | source: 25 | |
galactic coord. (B1950) | longitude: 278,99° | latitude: -47,23° | ||
GCI unit vector (J2000) | X: 0,299486 | Y: 0,351329 | Z: -0,88706 |
magnitude:
visual | 5,24 (observed) | source: 25 |
photovisual | 5,1 | source: 16 |
photographic | 5,7 | source: 2 |
spectral information:
spectral class | G0 | source: 96 | |
Morgan-Keenan | G1V | source: 25 | |
B-magnitude | 5,84 ±0,05 | B-V-magnitude | 0,6 |
U-magnitude | 5,84 ±0,05 | U-B-magnitude | 0 |
double/multiple star system information:
separation between brightest and second brightest component | 309,5 arcsec |
magnitude difference between brightest and second brightest component | 0,3 |
position angle | 216 ° |
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 (J1950) | RA: 3h 17min 7,399sec | DEC: -62° 41' 47,77'' | ±0,031 arcsec |
position (J2000) | RA: 3h 18min 12,864sec | DEC: -62° 30' 23'' | |
proper motion J1950 (FK4) | RA: 0,1936 arcsec/a | DEC: 0,658 arcsec/a | ±0,007 arcsec/a in RA ±0,007 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: 0,1929 arcsec/a | DEC: 0,645 arcsec/a | |
source of proper motion data | Determined by source catalog |
magnitude:
visual | 5,2 (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. |
catalogues
source catalogue | GC, catalogue number: 3975 |
Durchmusterung | CP-62 265 |
Boss General Catalogue | 3975 |
Henry Draper Catalogue | 20807 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
position (J2000) | RA: 3h 18,2min | DEC: -62° 30' |
proper motion (J2000) | RA: 0 arcsec/a | DEC: 0,66 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 |
Aa | 1978 | 1 | 11° | 0'' | 5,2 | - | G2V | BNU |
Aa-B | 1952 | 2 | 216° | 309,5'' | 5,22 | 5,52 | G2V | ALB 1 |
discoverer information:
discoverer code | discoverer | reference |
BNU | Bonneau et al | |
ALB 1 | Albany Obs. | - |
notes:
note | Zeta (2) Ret. B has common proper motion, +1370 +660, and is CPD-63@217, Zeta (1) Ret. |