q Indi


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 q Ind, HR 8140, HD 202730, SAO 246965, WDS 21199-5327B
constellation Indus

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


position, motion, parallax:

position (J2000) RA: 21h 19min 52sec DEC: -53 26' 59''
position (J1900) RA: 21h 12min 44,4sec DEC: -53 52' 6''
proper motion (J2000) RA: 0,105 arcsec/a DEC: -0,072 arcsec/a
radial velocity -15 km/s
rotational velocity 178 km/s (uncertain) (variable)
trigonometric parallax 0,043 arcsec
note (category: dynamical parallaxes): 0.048".

magnitude

visual magnitude 4,39
(V on UBV Johnson system)

spectral / color information

spectral class A5V
B-V-magnitude 0,19
U-B-magnitude 0,12

double/multiple star system information

separation 6,1 arcsec
mag difference (of double or brightest multiple) 2,4
note Worley (1978) update of the IDS
note (category: double and multiple data): Companion A7V or G0V.

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

position, motion, parallax:

position (J2000) RA: 21h 19min 51,3sec DEC: -53 26' 56,6'' 0,36 arcsec source: 18
proper motion (J2000) RA: 0,0111 arcsec/a DEC: -0,063 arcsec/a source: 18
radial velocity -7,2 km/s source: 11
trigonometric parallax 0,035 0,01 arcsec source: 6
galactic coord. (B1950) longitude: 343,69 latitude: -43,32
GCI unit vector (J2000) X: 0,455966 Y: -0,383092 Z: -0,803328

magnitude:

visual 7 (derived)
photovisual 7 source: 19

spectral information:

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 6,5 arcsec
magnitude difference between brightest and second brightest component 2,5
position angle 272

component magnitude spectral class catalogue(s)/name(s)
A 4,386 A5 q Indi, HR 8140, HD 202730, SAO 246965
B 7 -

sources:

6 General Catalog of Trigonometric Stellar Parallaxes
Stellar Parallaxes, New Haven: Yale University Observatory, 1952; and Supplement, 1963
11 General Catalogue of Stellar Radial Velocities
Wilson, R.E., General Catalogue of Stellar of Stellar Radial Radial Velocities, Washington, DC: Carnegie Institute of Washington, 1953
18 Hipparcos Input Catalog Version 2 Annex
Turon, C., et al., "The Hipparcos Input Catalog, Version 2," Centre de Donnees Stellaires Information Bulletin, Vol. 43, p. 5, 1993
19 WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (J1950) RA: 21h 16min 18,874sec DEC: -53 39' 37,51'' 0,045 arcsec
position (J2000) RA: 21h 19min 51,983sec DEC: -53 26' 58,51''
proper motion J1950 (FK4) RA: 0,0121 arcsec/a DEC: -0,068 arcsec/a 0,008 arcsec/a in RA
0,007 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0117 arcsec/a DEC: -0,072 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,6 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class A5
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: 29819
Durchmusterung CP-5310037A
Boss General Catalogue 29819
Henry Draper Catalogue 202730

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

position and proper motion:

position (J2000) RA: 21h 19,9min DEC: -53 27'
proper motion (J2000) RA: 0,144 arcsec/a DEC: -0,073 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
- 1834 60 305 3,5'' 4,5 7 A5V HJ 5258
1982 272 6,5''

discoverer information:

discoverer code discoverer reference
HJ 5258 Herschel, J. -

notes:

note Theta Ind.