5 Aquilae
catalogues and names
| catalogues and names | NSV 24583, 5 Aql, HR 7059, HD 173654, SAO 142606, BD -1 3559 A, WDS 18465-0058B |
| constellation | Aquila |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 18h 46min 28.5sec | DEC: -0° 57' 42'' | ||
| position (B1900) | RA: 18h 41min 18.7sec | DEC: -1° 4' 1'' | ||
| proper motion (J2000) | RA: 0.013 arcsec/a | DEC: -0.022 arcsec/a | ||
| radial velocity | 17 km/s note: spectroscopic binaries |
|||
| rotational velocity | =<25 km/s (uncertain) (variable) | |||
| dynamical parallax | 0.009 arcsec | |||
| galactic coordinates | longitude: 31.51° | latitude: 0.67° | ||
magnitude
| visual magnitude | 5.9 (V on UBV Johnson system) |
spectral / color information
| spectral class | A2Vm |
| B-V-magnitude | 0.13 |
| U-B-magnitude | 0.12 |
| R-I-magnitude |
| note (category: spectra): | Also classified Am(A1/A7V/A7). |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 12.8 arcsec |
| mag difference (of double or brightest multiple) | 1.6 |
| component ID | AB |
| note (category: double and multiple data): | AB binary, B, Am, F3Vm, or Am(A5/F1/F2), RV +9.2k/s, vsini =<25k/s. C, 11.3v optical. |
| note (category: spectroscopic binaries): | ADS 11667A, spectrum binary, RV var.? Unresolved by speckle interferometry on 1976.30; companion with sep. 0.13" seen on 1980.48 (McAlister and Hartkopf). |
miscellaneous information
| note (category: group membership): | Sirius group; UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 18h 46min 29.276sec | DEC: -0° 57' 48.45'' | ±0.36 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0004 arcsec/a | DEC: -0.019 arcsec/a | source: 17 | |
| radial velocity | 19 km/s | source: 11 | ||
| galactic coord. (B1950) | longitude: 31.52° | latitude: 0.66° | ||
magnitude:
| visual | 7.51 (observed) | source: 20 |
| photovisual | 5.7 | source: 2 |
| photographic | 6.2 | source: 16 |
spectral information:
| spectral class | A0 | source: 96 | |
| B-magnitude | 7.82 ±0.02 | B-V-magnitude | 0.31 |
| U-magnitude | 7.9 ±0.02 | U-B-magnitude | 0.08 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.1 arcsec |
| position angle | 322 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5.9 | A0 | 5 Aql, HR 7059, HD 173654, SAO 142606 |
| B | 7.51 | A0 |
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 | |
| 11 | General Catalogue of Stellar Radial Velocities |
| Wilson, R.E., General Catalogue of Stellar of Stellar Radial Radial Velocities, Washington, DC: Carnegie Institute of Washington, 1953 | |
| 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 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 1991 | |
| 19 | WDS Catalog |
| Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996 | |
| 20 | Catalogue of Homogeneous Means in the UBV System |
| Mermilliod, J.C., Catalogue of Homogeneous Means in the UBV System, Institut d'Astronomie, Universite de Lausanne, 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: 18h 43min 53.586sec | DEC: -1° 0' 57.14'' | ±0.021 arcsec |
| position (J2000) | RA: 18h 46min 28.546sec | DEC: -0° 57' 41.9'' | |
| proper motion B1950 (FK4) | RA: 0.0007 arcsec/a | DEC: -0.021 arcsec/a | ±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0009 arcsec/a | DEC: -0.022 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: 25713 |
| Durchmusterung | BD-01 3559A |
| Boss General Catalogue | 25713 |
| Henry Draper Catalogue | 173654 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 18h 46.5min | DEC: -0° 58' |
| proper motion (J2000) | RA: 0.026 arcsec/a | DEC: -0.025 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 | 1980 | 3 | 8° | 0.1'' | 5.91 | - | A2V | MCA 53 |
| 1989 | 322° | - | ||||||
| Aa-B | 1822 | 55 | 121° | 13.3'' | 5.91 | 7.53 | - | STF2379 |
| 1988 | - | 12.9'' | ||||||
| Aa-C | 1880 | 7 | 146° | 27.5'' | 5.91 | 11.31 | - | STF2379 |
| 1988 | - | 24.8'' | ||||||
| BC | 1877 | 3 | 167° | 16.3'' | 7.9 | 11.3 | - | STF2379 |
| 1987 | 175° | 13.2'' |
discoverer information:
| discoverer code | discoverer | reference |
| MCA 53 | McAlister, H.A. | - |
| STF2379 | Struve, F.G.W. | - |
notes:
| note | Aa: 5 Aql. A suspected spectroscopic binary, now resolved by speckle interferometry. |