Fornacis


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 Fornacis, a For, HR 963, HD 20010, SAO 168373, WDS 03121-2859
constellation Fornax

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

note (category: star names): Fornacis; 12 Eri in For.

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

position, motion, parallax:

position (J2000) RA: 3h 12min 4,3sec DEC: -28 59' 13''
position (J1900) RA: 3h 7min 49,3sec DEC: -29 22' 52''
proper motion (J2000) RA: 0,339 arcsec/a DEC: 0,64 arcsec/a
radial velocity -21 km/s
rotational velocity 0 km/s (uncertain) (variable)
trigonometric parallax 0,075 arcsec
note (category: dynamical parallaxes): 0.070".

magnitude

visual magnitude 3,87
(V on UBV Johnson system)

spectral / color information

spectral class F8V
B-V-magnitude 0,52
U-B-magnitude 0,02
R-I-magnitude 0,31

variability information

variable star identification 1074
note (category: variability): ADS 2402B, 7.0 - 9.03v.

double/multiple star system information

separation 3,6 arcsec
mag difference (of double or brightest multiple) 2,7
note (category: double and multiple data): 3.9 F8IV, 6.5 G7V, 314y, a = 4.367". Combined mag., colors.

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

position, motion, parallax:

position (J2000) RA: 3h 12min 4,474sec DEC: -28 59' 14,5'' 0,19 arcsec source: 16
proper motion (J2000) RA: 0,0285 arcsec/a DEC: 0,62 arcsec/a source: 25
radial velocity -21 km/s source: 25
trigonometric parallax 0,075 0,007 arcsec source: 25
galactic coord. (B1950) longitude: 224,74 latitude: -59,04
GCI unit vector (J2000) X: 0,585095 Y: 0,650239 Z: -0,484617

magnitude:

visual 3,87 (observed) source: 25
photovisual 4 source: 2
photographic 4,5 source: 2

spectral information:

spectral class F8 source: 96
Morgan-Keenan F8V source: 25
B-magnitude 4,39 0,05 B-V-magnitude 0,52
U-magnitude 4,41 0,05 U-B-magnitude 0,02

variability information:

source of data: 28
variability type 9
var. amplitude 2

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 4,4 arcsec
position angle 299

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
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: 3h 9min 56,75sec DEC: -29 10' 59,42'' 0,014 arcsec
position (J2000) RA: 3h 12min 4,268sec DEC: -28 59' 13,36''
proper motion J1950 (FK4) RA: 0,0254 arcsec/a DEC: 0,644 arcsec/a 0,002 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0259 arcsec/a DEC: 0,64 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

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

spectral information:

spectral class F8
source of spectral data Taken from the HD with M stars reclassified by Miss Cannon.

catalogues

source catalogue FK3, catalogue number: 117
Durchmusterung CD-29 1177
Boss General Catalogue 3831
Henry Draper Catalogue 20010

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

position and proper motion:

position (J2000) RA: 3h 12,1min DEC: -28 59'
proper motion (J2000) RA: 0,374 arcsec/a DEC: 0,642 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
- 1836 81 310 5,3'' 4 - F8V HJ 3555
1994 299 4,4''

discoverer information:

discoverer code discoverer reference
HJ 3555 Herschel, J. -

notes:

note Alpha For. P = 314yr., a = 4.37", motion direct. B is probably variable.