Sualocin


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0

  5. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names Sualocin, a Del, NSV 13207, 9 Del, HR 7906, HD 196867, SAO 106357, FK5: 774, WDS 20396+1555A
other names Scalovin, Svalocin, Nicolaus
constellation Delphinus

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

note (category: star names): Sualocin; Scalovin; Svalocin; Nicolaus.

position, motion, parallax:

position (J2000) RA: 20h 39min 38,3sec DEC: +15 54' 43''
position (J1900) RA: 20h 34min 59,5sec DEC: +15 33' 33''
proper motion (J2000) RA: 0,066 arcsec/a DEC: -0,002 arcsec/a
radial velocity -3 km/s
note: spectroscopic binaries
rotational velocity 162 km/s (uncertain) (variable)
trigonometric parallax 0,008 arcsec

magnitude

visual magnitude 3,77
(V on UBV Johnson system)

spectral / color information

spectral class B9IV
B-V-magnitude -0,06
U-B-magnitude -0,21
R-I-magnitude -0,04

variability information

variable star identification 13207

double/multiple star system information

number of components of multiple star system 6
separation 43,4 arcsec
mag difference (of double or brightest multiple) 7,5
component ID AC
note (category: double and multiple data): Companions optical.
note (category: spectroscopic binaries): ADS 14121A, sep. 0.23", mag. diff 2. Resolved by speckle interferometry 1986.45, sep. 0.14".

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000) RA: 20h 39min 38,293sec DEC: +15 54' 43,29'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0045 arcsec/a DEC: -0,002 arcsec/a source: 25
radial velocity -3 km/s source: 25
trigonometric parallax 0,008 0,001 arcsec source: 25
galactic coord. (B1950) longitude: 60,31 latitude: -15,32
GCI unit vector (J2000) X: 0,616995 Y: -0,737667 Z: 0,274161

magnitude:

visual 3,77 (observed) source: 25
photovisual 3,9 source: 2

spectral information:

spectral class B8 source: 96
Morgan-Keenan B9IV source: 25
B-magnitude 3,71 0,05 B-V-magnitude -0,06
U-magnitude 3,5 0,05 U-B-magnitude -0,21

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 0,2 arcsec
position angle 212

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 (J1950) RA: 20h 37min 18,874sec DEC: +15 44' 4,3'' 0,003 arcsec
position (J2000) RA: 20h 39min 38,295sec DEC: +15 54' 43,29''
proper motion J1950 (FK4) RA: 0,0045 arcsec/a DEC: 0 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0046 arcsec/a DEC: -0,002 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,9 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class B8
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 774
Durchmusterung BD+15 4222
Boss General Catalogue 28780
Henry Draper Catalogue 196867

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000) RA: 20h 39,6min DEC: +15 55'
proper motion (J2000) RA: 0,066 arcsec/a DEC: -0,002 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 1974 29 34 0,2'' 3,77 - B9IV WCK
1991 212 -
Aa-B 1891 4 224 29,5'' 3,9 13,4 - BU 298
Aa-C 1878 6 279 43,4'' 3,9 11,9 - HJ 1554
Aa-D 1877 6 150 48'' 3,9 12,9 - BU 298
1959 155 46,5''
Aa-E 1891 5 309 51,6'' 3,9 12,6 - BU 298
1959 306 54,5''
Aa-F 1879 4 114 80,7'' 3,9 10,7 - BU 298
1911 115 79,4''

discoverer information:

discoverer code discoverer reference
WCK Wickes et al
BU 298 Burnham, S.W. -
HJ 1554 Herschel, J. -

notes:

note Alpha Del. A spectroscopic binary now resolved by interferometry. P = 17.1yr., a = 0.16", motion retro- grade.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 20h 37min 18,9sec DEC: +15 44' 4''

variability informations:

magnitute at max. brightness 3,77
magnitute at min. brightness 3,8
photometric system visual, photovisual or Johnson's V

spectral information

spectral class B9

references

to a study 2314D (designation: ALPHA DEL)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).