Matar


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. 4th Catalog of Orbits of Visual Binaries

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


catalogues and names Matar, h Peg, NSV 14285, 44 Peg, HR 8650, HD 215182, SAO 90734, FK5: 857, WDS 22430+3013A
constellation Pegasus

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

note (category: star names): Matar.

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

position, motion, parallax:

position (J2000) RA: 22h 43min 0,1sec DEC: +30 13' 17''
position (J1900) RA: 22h 38min 18,8sec DEC: +29 41' 53''
proper motion (J2000) RA: 0,015 arcsec/a DEC: -0,025 arcsec/a
radial velocity 4 km/s
note: spectroscopic binaries, single lined spectra
note: orbital data avaible
rotational velocity 9 km/s (uncertain) (variable)
trigonometric parallax 0,017 arcsec

magnitude

visual magnitude 2,94
(V on UBV Johnson system)

spectral / color information

spectral class G2II-III+F0V
B-V-magnitude 0,86
U-B-magnitude 0,55
R-I-magnitude 0,48

variability information

variable star identification 14285
note (category: variability): ADS 16211A.

double/multiple star system information

number of components of multiple star system 6
separation 90,4 arcsec
mag difference (of double or brightest multiple) 5,1
component ID AxBC
note (category: double and multiple data): A* 2.94 G2II-III, 2.23y, a = 0.022". Speckle interferometry measures range from unresolved to sep. 0.059". BC, 10.0, 10.0v sep. 0.2" at 90" from A, physical.
note (category: spectroscopic binaries): ADS 16211A, 818.0d, K 14.2k/s, V0 +4.3k/s, asini 158, vsini of G8 component 9k/s, F0 component =<50k/s.

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

position, motion, parallax:

position (J2000) RA: 22h 43min 0,143sec DEC: +30 13' 16,52'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0011 arcsec/a DEC: -0,025 arcsec/a source: 25
radial velocity 4 km/s source: 25
trigonometric parallax 0,017 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 92,5 latitude: -24,95
GCI unit vector (J2000) X: 0,815779 Y: -0,284873 Z: 0,503341

magnitude:

visual 2,94 (observed) source: 25
photovisual 3,1 source: 2

spectral information:

spectral class G0 source: 96
Morgan-Keenan G2II-III source: 25
B-magnitude 3,8 0,05 B-V-magnitude 0,86
U-magnitude 4,35 0,05 U-B-magnitude 0,55

double/multiple star system information:

source of data: 19

component magnitude spectral class catalogue(s)/name(s)
A 2,94 G0 Matar, h Pegasi, 44 Peg, HR 8650, HD 215182, SAO 90734
B 9,96 G5

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: 22h 40min 39,264sec DEC: +29 57' 33,42'' 0,004 arcsec
position (J2000) RA: 22h 43min 0,139sec DEC: +30 13' 16,49''
proper motion J1950 (FK4) RA: 0,001 arcsec/a DEC: -0,021 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0011 arcsec/a DEC: -0,026 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class G0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 857
Durchmusterung BD+29 4741
Boss General Catalogue 31706
Henry Draper Catalogue 215182

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

position and proper motion:

position (J2000) RA: 22h 43min DEC: +30 13'
proper motion (J2000) RA: 0,015 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 1975 5 '' 3 - - BLA
Aa-BC 1824 13 339 90,4'' 3 10,3 - BU 1144
BC 1889 18 83 0,2'' 10,1 10,1 - BU 1144
BC-D 1916 1 320 62,9'' 10,3 14 - BU 1144
DE 1916 1 181 5,7'' 14 16 - BU 1144

discoverer information:

discoverer code discoverer reference
BLA Blazit, A. et al
BU 1144 Burnham, S.W. -

notes:

note Eta Peg. A spectroscopic binary resolved by speckle interferometry. Spectrum of Aa composite; G2II-III+F0IV. Hence a quadruple system. Aa-BC: B is BD+29@4740. Proper motion of B -005 -006.

data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)

position:

position (J1900) RA: 22h 38,3min DEC: +29 42'

magnitudes, spectral classes, orbital elements:

author: P. van de Kamp
date of observation: 1950
magnitude of component A: 2,94
magnitude of component B: 2,94
spectral class component B: G2II-
spectral class component B: G2II-
period [y]: 2,23
semi-major axis [arcsec]: 0,022
inclination [deg]: 77
node [deg]: 24
eccentricity: 0,15
time of periastron passage: 1900,74
reference: Astron. J. 62, 393; 1957.
notes The elements P, T, e in the astrometric solution have been taken from the spectroscopic orbit by Crawford. The astrometric amplitude is marginal, and not certainly real. The pair BC (mags. 10.1-10.1, 0.3") is 91" distant and probably physical; Aa-BC = BU 1144.