1 Peg


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


catalogues and names 1 Peg, HR 8173, HD 203504, SAO 107073, FK5: 804, WDS 21221+1948A
constellation Pegasus

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


object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 21h 22min 5,2sec DEC: +19 48' 16''
position (J1900) RA: 21h 17min 27,6sec DEC: +19 22' 36''
proper motion (J2000) RA: 0,106 arcsec/a DEC: 0,064 arcsec/a
radial velocity -76 km/s
note: spectroscopic binaries
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax 0,014 arcsec

magnitude

visual magnitude 4,08
(V on UBV Johnson system)

spectral / color information

spectral class K1III
B-V-magnitude 1,11
U-B-magnitude 1,06
R-I-magnitude 0,54

double/multiple star system information

number of components of multiple star system 3
separation 36,2 arcsec
mag difference (of double or brightest multiple) 4,9
component ID AB
note (category: double and multiple data): AB CPM. Companion K0V.
note (category: spectroscopic binaries): ADS 14909B.

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

position, motion, parallax:

position (J2000) RA: 21h 22min 5,198sec DEC: +19 48' 16,26'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0075 arcsec/a DEC: 0,064 arcsec/a source: 25
radial velocity -76 km/s source: 25
trigonometric parallax 0,014 0,001 arcsec source: 25
galactic coord. (B1950) longitude: 70,06 latitude: -20,92
GCI unit vector (J2000) X: 0,726212 Y: -0,598182 Z: 0,338812

magnitude:

visual 4,08 (observed) source: 25
photovisual 4,2 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K1III source: 25
B-magnitude 5,19 0,05 B-V-magnitude 1,11
U-magnitude 6,25 0,05 U-B-magnitude 1,06

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 36,3 arcsec
magnitude difference between brightest and second brightest component 5,08
position angle 311

component magnitude spectral class catalogue(s)/name(s)
A 4,08 K0 1 Peg, HR 8173, HD 203504, SAO 107073
B 9,15 -

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: 21h 19min 46,347sec DEC: +19 35' 22,77'' 0,004 arcsec
position (J2000) RA: 21h 22min 5,194sec DEC: +19 48' 16,24''
proper motion J1950 (FK4) RA: 0,0074 arcsec/a DEC: 0,066 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0074 arcsec/a DEC: 0,063 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,3 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 804
Durchmusterung BD+19 4691
Boss General Catalogue 29914
Henry Draper Catalogue 203504

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

position and proper motion:

position (J2000) RA: 21h 22,1min DEC: +19 48'
proper motion (J2000) RA: 0,106 arcsec/a DEC: 0,064 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 1835 29 311 36,3'' 4,08 9,16 K0.5III STF 11
AC 1912 2 20 75'' 4,2 12,1 - STF 11

discoverer information:

discoverer code discoverer reference
STF 11 Struve, F.G.W. -

notes:

note 1 Peg. B is a spectroscopic binary, P = 1111d, and is BD+19@4690. Spectrum K0V. Proper motion of B +110 +050.