q Aurigae
catalogues and names
| catalogues and names | q Aur, 37 Aur, HR 2095, HD 40312, SAO 58636, BD +37 1380, WDS 05597+3713A |
| constellation | Auriga |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 5h 59min 43.3sec | DEC: +37° 12' 45'' | ||
| position (B1900) | RA: 5h 52min 54.1sec | DEC: +37° 12' 21'' | ||
| proper motion (J2000) | RA: 0.048 arcsec/a | DEC: -0.081 arcsec/a | ||
| radial velocity | 30 km/s note: spectroscopic binaries |
|||
| rotational velocity | 49 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.022 arcsec | |||
| galactic coordinates | longitude: 174.34° | latitude: 6.73° | ||
| note (category: dynamical parallaxes): | 0.032". |
magnitude
| visual magnitude | 2.62 (V on UBV Johnson system) |
spectral / color information
| spectral class | A0pSi |
| B-V-magnitude | -0.08 |
| U-B-magnitude | -0.18 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | The Aur |
| note (category: variability): | ADS 4566B. Alpha CV 2.62 - 2.70V. Amp. 0.43m at 1400A, 1.3735d. Magnetic field varies 3.618d. |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 3.5 arcsec |
| mag difference (of double or brightest multiple) | 4.5 |
| component ID | AB |
| note (category: double and multiple data): | AB binary , combined mag., colors. B is 7.2v G2V. C, 11v at 49" optical. |
miscellaneous information
| note (category: stellar radii or diameters): | Radius 3.3 solar. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 5h 59min 43.239sec | DEC: +37° 12' 45.57'' | ±0.43 arcsec | source: 16 |
| proper motion (J2000) | RA: 0.0038 arcsec/a | DEC: -0.065 arcsec/a | source: 25 | |
| radial velocity | 30 km/s | source: 25 | ||
| trigonometric parallax | 0.022 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 174.34° | latitude: 6.73° | ||
magnitude:
| visual | 2.6 (observed) | source: 31 |
| photovisual | 2.7 | source: 2 |
| photographic | 2.7 | source: 16 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A0pSi | source: 25 | |
| B-magnitude | 2.54 ±0.05 | B-V-magnitude | -0.08 |
| U-magnitude | 2.36 ±0.05 | U-B-magnitude | -0.18 |
variability information:
| variability type | 160 |
| var. amplitude | 0.08 |
| var. period | 1.37 |
double/multiple star system information:
| separation between brightest and second brightest component | 3.5 arcsec |
| magnitude difference between brightest and second brightest component | 4.5 |
| position angle | 314 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 2.6 | A0 | q Aurigae, 37 Aur, HR 2095, HD 40312, SAO 58636 |
| B | 9.2 | - |
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 | |
| 30 | GCVS, 4th edition |
| Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88 | |
| 31 | CRM' (non-GCVS variable data) |
| Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 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: 5h 56min 18.627sec | DEC: +37° 12' 40.05'' | ±0.009 arcsec |
| position (J2000) | RA: 5h 59min 43.3sec | DEC: +37° 12' 44.66'' | |
| proper motion B1950 (FK4) | RA: 0.0041 arcsec/a | DEC: -0.082 arcsec/a | ±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.004 arcsec/a | DEC: -0.081 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 2.7 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | A0p |
| source of spectral data | Taken from the HD with M stars reclassified by Miss Cannon. |
catalogues
| source catalogue | FK3, catalogue number: 228 |
| Durchmusterung | BD+37 1380 |
| Boss General Catalogue | 7557 |
| Henry Draper Catalogue | 40312 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 5h 59.7min | DEC: +37° 13' |
| proper motion (J2000) | RA: 0.044 arcsec/a | DEC: -0.078 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 | 1871 | 95 | 6° | 2.2'' | 2.7 | 7.2 | A0pSi | STT 545 |
| 1988 | 314° | 3.5'' | ||||||
| AC | 1852 | 18 | 291° | 43.2'' | 2.7 | 10.7 | - | STT 545 |
| 1963 | 298° | 51.5'' | ||||||
| AD | 1840 | 8 | 351° | 123.3'' | 2.7 | 9.2 | - | STT 545 |
| 1924 | 350° | 130.7'' |
discoverer information:
| discoverer code | discoverer | reference |
| STT 545 | Struve, O. | - |
notes:
| note | Theta Aur. A is a variable of the Alpha CVn type. |