p2Gruis
catalogues and names
| catalogues and names | p2Gru, HR 8524, HD 212132, SAO 231111, CD -46 14295, FK5: 3786, WDS 22231-4556 |
| constellation | Grus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 23min 8sec | DEC: -45° 55' 43'' | ||
| position (B1900) | RA: 22h 16min 59.5sec | DEC: -46° 25' 54'' | ||
| proper motion (J2000) | RA: 0.237 arcsec/a | DEC: -0.061 arcsec/a | ||
| radial velocity | 20 km/s note: variable radial velocity |
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| trigonometric parallax | 0.027 arcsec | |||
| galactic coordinates | longitude: 350.28° | latitude: -55.23° | ||
magnitude
| visual magnitude | 5.62 (V on UBV Johnson system) |
spectral / color information
| spectral class | F3III-IV |
| B-V-magnitude | 0.36 |
| U-B-magnitude | 0.02 |
| R-I-magnitude | |
| IR-note | object is infrared source (uncertain identification) |
| note (category: spectra): | Also classified F0V. |
double/multiple star system information
| separation | 4.9 arcsec |
| mag difference (of double or brightest multiple) | 5.4 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | CPM. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 23min 8.017sec | DEC: -45° 55' 42.83'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: 0.0228 arcsec/a | DEC: -0.061 arcsec/a | source: 25 | |
| radial velocity | 20 km/s | source: 25 | ||
| trigonometric parallax | 0.027 arcsec | ±0.003 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 350.28° | latitude: -55.23° | ||
magnitude:
| visual | 5.62 (observed) | source: 25 |
| photovisual | 5.6 | source: 16 |
| photographic | 6.1 | source: 2 |
spectral information:
| spectral class | F0 | source: 96 | |
| Morgan-Keenan | F3III-IV | source: 25 | |
| B-magnitude | 5.98 ±0.05 | B-V-magnitude | 0.36 |
| U-magnitude | 6 ±0.05 | U-B-magnitude | 0.02 |
double/multiple star system information:
| separation between brightest and second brightest component | 5.1 arcsec |
| magnitude difference between brightest and second brightest component | 5.8 |
| position angle | 220 ° |
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: 22h 20min 4.223sec | DEC: -46° 10' 50.77'' | ±0.03 arcsec |
| position (J2000) | RA: 22h 23min 7.994sec | DEC: -45° 55' 41.75'' | |
| proper motion B1950 (FK4) | RA: 0.0227 arcsec/a | DEC: -0.046 arcsec/a | ±0.008 arcsec/a in RA ±0.006 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0227 arcsec/a | DEC: -0.05 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 31279 |
| Durchmusterung | CD-4614295 |
| Boss General Catalogue | 31279 |
| Henry Draper Catalogue | 212132 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 22h 23.1min | DEC: -45° 56' |
| proper motion (J2000) | RA: 0.237 arcsec/a | DEC: -0.061 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 |
| - | 1901 | 10 | 207° | 4.6'' | 5.6 | 11.4 | F3III-IV | I 382 |
| 1985 | 220° | 5.1'' |
discoverer information:
| discoverer code | discoverer | reference |
| I 382 | Innes, R.T.A. | - |
notes:
| note | Pi (2) Gru. |