q Virginis
catalogues and names
| catalogues and names | q Vir, 51 Vir, HR 4963, HD 114330, SAO 139189, BD -4 3430, FK5: 490, WDS 13099-0532A |
| constellation | Virgo |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 13h 9min 57sec | DEC: -5° 32' 20'' | ||
| position (B1900) | RA: 13h 4min 46.2sec | DEC: -5° 0' 18'' | ||
| proper motion (J2000) | RA: -0.032 arcsec/a | DEC: -0.033 arcsec/a | ||
| radial velocity | -3 km/s note: spectroscopic binaries |
|||
| rotational velocity | 15 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.026 arcsec | |||
| galactic coordinates | longitude: 311.42° | latitude: 57.03° | ||
| note (category: dynamical parallaxes): | 0.005". |
magnitude
| visual magnitude | 4.38 (V on UBV Johnson system) |
spectral / color information
| spectral class | A1IV s+Am |
| B-V-magnitude | -0.01 |
| U-B-magnitude | -0.01 |
| R-I-magnitude |
| note (category: spectra): | Component B, K/H/m lines indicate A5/A9/F2 respectively. |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 0.5 arcsec |
| mag difference (of double or brightest multiple) | 1 |
| note (category: double and multiple data): | A is SB and speckle interferometric binary, third component 9.4v, sep. 7.1". B, 8.00V, +0.20(B-V), -0.09(U-B), CPM. |
| note (category: spectroscopic binaries): | About 14y orbital period; also RV 0.152360d suggesting possible light var. Spectra indicate triple system. Long period SB, sep. 0.48", resolved by speckle interferometry at 4-meter Mayall telescope. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 13h 9min 56.999sec | DEC: -5° 32' 20.42'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0021 arcsec/a | DEC: -0.033 arcsec/a | source: 25 | |
| radial velocity | -3 km/s | source: 25 | ||
| trigonometric parallax | 0.026 arcsec | ±0.003 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 311.43° | latitude: 57.03° | ||
magnitude:
| visual | 4.38 (observed) | source: 25 |
| photovisual | 4.4 | source: 2 |
| photographic | 4.4 | source: 2 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A1IVs+Am | source: 25 | |
| B-magnitude | 4.37 ±0.05 | B-V-magnitude | -0.01 |
| U-magnitude | 4.36 ±0.05 | U-B-magnitude | -0.01 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.5 arcsec |
| position angle | 333 ° |
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 | |
| 15 | FK5, FK5 Extension and FK5 Supplement |
| Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991 | |
| 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: 13h 7min 21.476sec | DEC: -5° 16' 21.11'' | ±0.003 arcsec |
| position (J2000) | RA: 13h 9min 57.005sec | DEC: -5° 32' 20.36'' | |
| proper motion B1950 (FK4) | RA: -0.0023 arcsec/a | DEC: -0.037 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0021 arcsec/a | DEC: -0.032 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | A0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 490 |
| Durchmusterung | BD-04 3430 |
| Boss General Catalogue | 17828 |
| Henry Draper Catalogue | 114330 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 13h 9.9min | DEC: -5° 32' |
| proper motion (J2000) | RA: -0.032 arcsec/a | DEC: -0.033 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 | 1976 | 22 | 324° | 0.5'' | 4.38 | - | A1IVs+Am | MCA 38 |
| 1992 | 333° | - | ||||||
| Aa-B | 1830 | 50 | 343° | 7.1'' | 4.38 | 8 | - | STF1724 |
| Aa-C | 1782 | 18 | 298° | 71'' | 4.38 | 10.4 | - | H 50 |
| BC | 1912 | 4 | 295° | 66.2'' | 9.4 | 10.4 | - | H 50 |
discoverer information:
| discoverer code | discoverer | reference |
| MCA 38 | McAlister, H.A. | - |
| STF1724 | Struve, F.G.W. | - |
| H 50 | Herschel, W. | - |
notes:
| note | Theta Vir. Also a long-period spectroscopic binary. Aa-C: H III 50. |