m Arietis
catalogues and names
| catalogues and names | m Ari, 34 Ari, HR 793, HD 16811, SAO 93062, BD +19 403, WDS 02424+2001A |
| constellation | Aries |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 2h 42min 22sec | DEC: +20° 0' 42'' | ||
| position (B1900) | RA: 2h 36min 43.5sec | DEC: +19° 35' 8'' | ||
| proper motion (J2000) | RA: 0.029 arcsec/a | DEC: -0.043 arcsec/a | ||
| radial velocity | -7 km/s note: variable radial velocity |
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| rotational velocity | 195 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 155.53° | latitude: -35.74° | ||
magnitude
| visual magnitude | 5.69 (HR magnitude reduced to the UBV system) |
spectral / color information
| spectral class | A0Vnp: |
| B-V-magnitude | -0.02 |
| U-B-magnitude | -0.03 |
| note (category: spectra): | Lambda Boo star, Mg 4481 wk: |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 0.1 arcsec |
| mag difference (of double or brightest multiple) | 0.8 |
| component ID | O |
| note (category: double and multiple data): | AB 6.2, 12.2v, 19" about 6y. Occultations indicate A is triple system, 7.0v A1, at 0.06", and 8.0v at 0.2". Aa resolved by speckle interferometry, sep. 0.045" 1981.68, 0.040" 1981.69. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 2h 42min 21.938sec | DEC: +20° 0' 41.57'' | ±0.43 arcsec | source: 16 |
| proper motion (J2000) | RA: 0.002 arcsec/a | DEC: -0.045 arcsec/a | source: 25 | |
| radial velocity | -7 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 155.53° | latitude: -35.74° | ||
magnitude:
| visual | 5.74 (observed) | source: 25 |
| photovisual | 5.7 | source: 2 |
| photographic | 5.7 | source: 16 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A0Vnp: | source: 25 | |
| B-magnitude | 5.72 ±0.05 | B-V-magnitude | -0.02 |
| U-magnitude | 5.68 ±0.05 | U-B-magnitude | -0.04 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.1 arcsec |
| position angle | 281 ° |
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: 2h 39min 32.488sec | DEC: +19° 47' 58.68'' | ±0.014 arcsec |
| position (J2000) | RA: 2h 42min 21.97sec | DEC: +20° 0' 41.53'' | |
| proper motion B1950 (FK4) | RA: 0.0021 arcsec/a | DEC: -0.04 arcsec/a | ±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0021 arcsec/a | DEC: -0.043 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.7 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A0 |
| 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: 3256 |
| Durchmusterung | BD+19 403 |
| Boss General Catalogue | 3256 |
| Henry Draper Catalogue | 16811 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 2h 42.4min | DEC: +20° 1' |
| proper motion (J2000) | RA: 0.025 arcsec/a | DEC: -0.046 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 | 1975 | 18 | 147° | 0'' | 5.69 | - | A0V | BLA |
| 1988 | 281° | 0.1'' | ||||||
| Aa-B | 1878 | 7 | 264° | 19.1'' | 5.7 | 12.2 | A0V | BU 522 |
discoverer information:
| discoverer code | discoverer | reference |
| BLA | Blazit, A. et al | |
| BU 522 | Burnham, S.W. | - |
notes:
| note | Mu Ari. P = 8.8yr., a = 0.05", motion direct. |