m2Gruis
| catalogues and names | m2Gru, HR 8488, HD 211202, SAO 231063 |
| constellation | Grus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 16min 26,6sec | DEC: -41° 37' 39'' |
| position (J1900) | RA: 22h 10min 25,6sec | DEC: -42° 7' 29'' |
| proper motion (J2000) | RA: -0,005 arcsec/a | DEC: -0,013 arcsec/a |
| radial velocity | 13 km/s note: spectroscopic binaries |
|
| trigonometric parallax | 0,01 arcsec | |
magnitude
| visual magnitude | 5,1 (V on UBV Johnson system) |
spectral / color information
| spectral class | G8III |
| B-V-magnitude | 0,92 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 16min 26,542sec | DEC: -41° 37' 37,9'' | ±0,19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0,0022 arcsec/a | DEC: -0,003 arcsec/a | source: 25 | |
| radial velocity | 13 km/s | source: 25 | ||
| trigonometric parallax | 0,01 | ±0,001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 358,12° | latitude: -55,26° | ||
| GCI unit vector (J2000) | X: 0,672464 | Y: -0,326378 | Z: -0,664281 | |
magnitude:
| visual | 5,1 (observed) | source: 25 |
| photovisual | 5,2 | source: 16 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G8III | source: 25 | |
| B-magnitude | 6,02 ±0,05 | B-V-magnitude | 0,92 |
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 (J1950) | RA: 22h 13min 26,498sec | DEC: -41° 52' 36,94'' | ±0,029 arcsec |
| position (J2000) | RA: 22h 16min 26,648sec | DEC: -41° 37' 38,57'' | |
| proper motion J1950 (FK4) | RA: -0,0006 arcsec/a | DEC: -0,009 arcsec/a | ±0,006 arcsec/a in RA ±0,005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0005 arcsec/a | DEC: -0,013 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 | G5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 31138 |
| Durchmusterung | CD-4215846 |
| Boss General Catalogue | 31138 |
| Henry Draper Catalogue | 211202 |