p Arietis
| catalogues and names | p Ari, NSV 00944, 42 Ari, HR 836, HD 17543, SAO 93127, WDS 02493+1728A |
| constellation | Aries |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 2h 49min 17,5sec | DEC: +17° 27' 51'' |
| position (J1900) | RA: 2h 43min 42,6sec | DEC: +17° 2' 54'' |
| proper motion (J2000) | RA: -0,001 arcsec/a | DEC: -0,015 arcsec/a |
| radial velocity | 9 km/s note: spectroscopic binaries note: orbital data avaible |
|
| rotational velocity | 79 km/s (uncertain) (variable) | |
magnitude
| visual magnitude | 5,22 (V on UBV Johnson system) |
spectral / color information
| spectral class | B6V |
| B-V-magnitude | -0,06 |
| U-B-magnitude | -0,47 |
variability information
| variable star identification | 944 |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 0 arcsec |
| mag difference (of double or brightest multiple) | 3 |
| component ID | A |
| note (category: double and multiple data): | AB CPM. B 8.8v, A0Vp at 3.2", RV -21k/s, probably optical; C 10.72V, +0.60(B-V), +0.60(U-B), F8V at 25". A is close SB pair with computed sep. 0.00004". |
| note (category: spectroscopic binaries): | ADS 2151A, 3.854d, K 24.8k/s, V0 +7.8k/s, asini 1.31. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 2h 49min 17,533sec | DEC: +17° 27' 51,86'' | ±0,43 arcsec | source: 16 |
| proper motion (J2000) | RA: -0,0005 arcsec/a | DEC: -0,009 arcsec/a | source: 25 | |
| radial velocity | 9 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 158,94° | latitude: -37,04° | ||
| GCI unit vector (J2000) | X: 0,705278 | Y: 0,642273 | Z: 0,300113 | |
magnitude:
| visual | 5,22 (observed) | source: 25 |
| photovisual | 5,3 | source: 2 |
| photographic | 5,1 | source: 16 |
spectral information:
| spectral class | B5 | source: 96 | |
| Morgan-Keenan | B6V | source: 25 | |
| B-magnitude | 5,16 ±0,05 | B-V-magnitude | -0,06 |
| U-magnitude | 4,69 ±0,05 | U-B-magnitude | -0,47 |
double/multiple star system information:
| separation between brightest and second brightest component | 3,2 arcsec |
| magnitude difference between brightest and second brightest component | 3,5 |
| position angle | 119 ° |
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: 2h 46min 29,805sec | DEC: +17° 15' 27,06'' | ±0,016 arcsec |
| position (J2000) | RA: 2h 49min 17,519sec | DEC: +17° 27' 51,4'' | |
| proper motion J1950 (FK4) | RA: -0,0001 arcsec/a | DEC: -0,012 arcsec/a | ±0,002 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0001 arcsec/a | DEC: -0,015 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5,3 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B5 |
| 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: 3378 |
| Durchmusterung | BD+16 355 |
| Boss General Catalogue | 3378 |
| Henry Draper Catalogue | 17543 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 2h 49,3min | DEC: +17° 28' |
| proper motion (J2000) | RA: 0,009 arcsec/a | DEC: -0,012 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 |
| AB | 1832 | 49 | 121° | 3,2'' | 5,3 | 8,8 | B6V | STF 311 |
| 1983 | 119° | - | ||||||
| AC | 1832 | 27 | 110° | 25,2'' | 5,3 | 10,72 | - | STF 311 |
| BC | 1879 | 1 | 108° | 21,8'' | - | - | - | STF 311 |
discoverer information:
| discoverer code | discoverer | reference |
| STF 311 | Struve, F.G.W. | - |
notes:
| note | Pi Ari. A is a spectroscopic and occultation binary. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 2h 46min 29,8sec | DEC: +17° 15' 27'' |
variability informations:
| variability type | - |
| magnitute at max. brightness | 5,21 |
| magnitute at min. brightness | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | B6 |
references
| to a study | 0132D (designation: 311) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |