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 Kitalpha, a Equ, 8 Equ, HR 8131, HD 202447, SAO 126662, FK5: 800, WDS 21158+0515
other names Kitel Phard, Kitalphar
constellation Equuleus

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

note (category: star names): Kitalpha; Kitel Phard; Kitalphar.

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

position, motion, parallax:

position (J2000) RA: 21h 15min 49,4sec DEC: +5 14' 52''
position (J1900) RA: 21h 10min 49,5sec DEC: +4 50' 4''
proper motion (J2000) RA: 0,059 arcsec/a DEC: -0,088 arcsec/a
radial velocity -16 km/s
note: spectroscopic binaries
note: orbital data avaible
rotational velocity =<50 km/s (uncertain) (variable)
trigonometric parallax 0,021 arcsec


visual magnitude 3,92
(V on UBV Johnson system)

spectral / color information

spectral class G0III+A5V
B-V-magnitude 0,53
U-B-magnitude 0,29
R-I-magnitude 0,35
note (category: spectra): Oxygen deficient relative to magnesium. Also classified G2II-III + A4V.

double/multiple star system information

separation 0,1 arcsec
note Worley (1978) update of the IDS
note (category: double and multiple data): Sep. 0.08". May be only single star.
note (category: spectroscopic binaries): 98.81d, K1 15.67k/s, K2 12.49k/s, V0 -17.8k/s, m1sin3i 0.102, m2sin3i 0.127, asini 21.3. Unresolved by speckle interferometry. vsini both components =<50k/s.

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

position, motion, parallax:

position (J2000) RA: 21h 15min 49,439sec DEC: +5 14' 52,25'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0039 arcsec/a DEC: -0,088 arcsec/a source: 25
radial velocity -16 km/s source: 25
trigonometric parallax 0,021 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 56,38 latitude: -28,71
GCI unit vector (J2000) X: 0,751044 Y: -0,653886 Z: 0,091464


visual 3,92 (observed) source: 25
photovisual 4,1 source: 2

spectral information:

spectral class F8 source: 96
Morgan-Keenan G0III source: 25
B-magnitude 4,45 0,05 B-V-magnitude 0,53
U-magnitude 4,74 0,05 U-B-magnitude 0,29

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 0,1 arcsec
position angle 240

component magnitude spectral class catalogue(s)/name(s)
A 3,92 F8 Kitalpha, a Equulei, 8 Equ, HR 8131, HD 202447, SAO 126662
B 3,93 +++


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 13min 19,44sec DEC: +5 2' 24,35'' 0,004 arcsec
position (J2000) RA: 21h 15min 49,441sec DEC: +5 14' 52,22''
proper motion J1950 (FK4) RA: 0,0038 arcsec/a DEC: -0,084 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,004 arcsec/a DEC: -0,088 arcsec/a
source of proper motion data Determined by source catalog


visual 4,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

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


source catalogue FK4, catalogue number: 800
Durchmusterung BD+04 4635
Boss General Catalogue 29735
Henry Draper Catalogue 202447
The "SAO Catalog" entry refers to two consecutive HD numbers, the lower of which is given.

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

position and proper motion:

position (J2000) RA: 21h 15,8min DEC: +5 15'
proper motion (J2000) RA: 0,059 arcsec/a DEC: -0,088 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
- 1949 1 240 0,1'' 3,92 - G0III+A5V WRH

discoverer information:

discoverer code discoverer reference
WRH Wilson, R.H.


note Alpha Equ. Duplicity doubtful.