52 Pegasi
catalogues and names
| catalogues and names | 52 Peg, HR 8739, HD 217232, SAO 108307, BD +10 4859, WDS 22592+1144 |
| constellation | Pegasus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 59min 11.8sec | DEC: +11° 43' 44'' | ||
| position (B1900) | RA: 22h 54min 11.6sec | DEC: +11° 11' 39'' | ||
| proper motion (J2000) | RA: 0.033 arcsec/a | DEC: -0.041 arcsec/a | ||
| radial velocity | 20 km/s note: suspected variable radial velocity |
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| dynamical parallax | 0.014 arcsec | |||
| galactic coordinates | longitude: 84.23° | latitude: -42.55° | ||
magnitude
| visual magnitude | 5.75 (V on UBV Johnson system) |
spectral / color information
| spectral class | A8V+F6V |
| B-V-magnitude | 0.32 |
| U-B-magnitude | 0.08 |
| note (category: spectra): | Primary variously classified A7V, A8V, F0V, or A8III. |
double/multiple star system information
| separation | 0.7 arcsec |
| mag difference (of double or brightest multiple) | 1.3 |
| note (category: double and multiple data): | 6.1 F0V, 7.4 F6V, 270.13y, a = 0.815". Combined mag., colors. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 59min 11.813sec | DEC: +11° 43' 44.14'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0022 arcsec/a | DEC: -0.039 arcsec/a | source: 25 | |
| radial velocity | 20 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 84.24° | latitude: -42.55° | ||
magnitude:
| visual | 5.75 (observed) | source: 25 |
| photovisual | 5.8 | source: 2 |
| photographic | 6 | source: 16 |
spectral information:
| spectral class | F0 | source: 96 | |
| Morgan-Keenan | A8V+F6V | source: 25 | |
| B-magnitude | 6.07 ±0.05 | B-V-magnitude | 0.32 |
| U-magnitude | 6.15 ±0.05 | U-B-magnitude | 0.08 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.5 arcsec |
| magnitude difference between brightest and second brightest component | 1.2 |
| position angle | 319 ° |
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 | |
| 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 | |
| 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: 22h 56min 41.593sec | DEC: +11° 27' 40.19'' | ±0.016 arcsec |
| position (J2000) | RA: 22h 59min 11.808sec | DEC: +11° 43' 43.8'' | |
| proper motion B1950 (FK4) | RA: 0.0022 arcsec/a | DEC: -0.036 arcsec/a | ±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0023 arcsec/a | DEC: -0.041 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F0 |
| 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: 32034 |
| Durchmusterung | BD+10 4859 |
| Boss General Catalogue | 32034 |
| Henry Draper Catalogue | 217232 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 22h 59.2min | DEC: +11° 44' |
| proper motion (J2000) | RA: 0.032 arcsec/a | DEC: -0.039 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 |
| - | 1845 | often | 181° | 0.9'' | 6.1 | 7.3 | A8III | STT 483 |
| 1992 | 319° | 0.5'' |
discoverer information:
| discoverer code | discoverer | reference |
| STT 483 | Struve, O. | - |
notes:
| note | 52 Peg. P = 216yr., a = 0.75", motion direct. Alternative spectrum: A8V+F6V. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 22h 54.2min | DEC: +11° 12' |
magnitudes, spectral classes, orbital elements:
| author: | A. Valbousquet | U. Guntzel-Lingner |
| date of observation: | 1978 | 1952 |
| magnitude of component A: | 6 | 6 |
| magnitude of component B: | 6 | 6 |
| spectral class component B: | A8V | A8V |
| spectral class component B: | A8V | A8V |
| period [y]: | 270.13 | 286 |
| semi-major axis [arcsec]: | 0.815 | 0.88 |
| inclination [deg]: | 42.58 | 44.6 |
| node [deg]: | 16.06 | 6.3 |
| equinox of node: | 2000 | |
| eccentricity: | 0.305 | 0.33 |
| time of periastron passage: | 2060.45 | 2041 |
| dates of ephemeris: | 1957-1981 | |
| grade: | preliminary | preliminary |
| reference: | Circ. Inf. No. 83, 1981. | Astron. Nachr. 283, 150; 1956. |
| other name(s) | STT 483, 52 Peg |