a Sextantis


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


catalogues and names a Sex, 15 Sex, HR 3981, HD 87887, SAO 137366, FK5: 2814
constellation Sextans

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


position, motion, parallax:

position (J2000) RA: 10h 7min 56,3sec DEC: -0 22' 18''
position (J1900) RA: 10h 2min 49,1sec DEC: +0 7' 1''
proper motion (J2000) RA: -0,016 arcsec/a DEC: -0,013 arcsec/a
radial velocity 7 km/s
note: suspected variable radial velocity
rotational velocity 9 km/s (uncertain) (variable)
trigonometric parallax 0,015 arcsec

magnitude

visual magnitude 4,49
(V on UBV Johnson system)

spectral / color information

spectral class A0III
B-V-magnitude -0,04
U-B-magnitude -0,07
R-I-magnitude -0,05

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

position, motion, parallax:

position (J2000) RA: 10h 7min 56,268sec DEC: -0 22' 18,45'' 0,43 arcsec source: 16
proper motion (J2000) RA: -0,0015 arcsec/a DEC: -0,017 arcsec/a source: 25
radial velocity 7 km/s source: 25
trigonometric parallax 0,015 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 241,12 latitude: 42,07
GCI unit vector (J2000) X: -0,882802 Y: 0,469701 Z: -0,006489

magnitude:

visual 4,49 (observed) source: 25
photovisual 4,5 source: 2
photographic 4,4 source: 16

spectral information:

spectral class A0 source: 96
Morgan-Keenan A0III source: 25
B-magnitude 4,45 0,05 B-V-magnitude -0,04
U-magnitude 4,38 0,05 U-B-magnitude -0,07

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
16 PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
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: 10h 5min 22,72sec DEC: -0 7' 35,34'' 0,021 arcsec
position (J2000) RA: 10h 7min 56,28sec DEC: -0 22' 18,02''
proper motion J1950 (FK4) RA: -0,0012 arcsec/a DEC: -0,014 arcsec/a 0,004 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,001 arcsec/a DEC: -0,01 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,5 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class A0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue GC, catalogue number: 13916
Durchmusterung BD+00 2615
Boss General Catalogue 13916
Henry Draper Catalogue 87887