NSV 15841


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 NSV 15841, 32 Eri, HR 1211, HD 24554, SAO 130805, WDS 03543-0257B
constellation Eridanus

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


position, motion, parallax:

position (J2000) RA: 3h 54min 17,4sec DEC: -2 57' 10''
position (J1900) RA: 3h 49min 16sec DEC: -3 14' 54''
proper motion (J2000) RA: 0,029 arcsec/a DEC: 0,008 arcsec/a
radial velocity 18 km/s
note: variable radial velocity
rotational velocity 180 km/s (uncertain) (variable)
trigonometric parallax 0,004 arcsec
note (category: dynamical parallaxes): 0.006".

magnitude

visual magnitude 6,14
(V on UBV Johnson system)

spectral / color information

spectral class A2V
B-V-magnitude 0,09
U-B-magnitude 0,07

double/multiple star system information

number of components of multiple star system 3
separation 6,8 arcsec
mag difference (of double or brightest multiple) 1,5
component ID AB
note (category: double and multiple data): Binary with HR 1212. C, 10v at 165".

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

position, motion, parallax:

position (J2000) RA: 3h 54min 17,38sec DEC: -2 57' 9,6'' 0,76 arcsec source: 18
proper motion (J2000) RA: 0,0016 arcsec/a DEC: 0,007 arcsec/a source: 25
radial velocity 18 km/s source: 25
trigonometric parallax 0,004 - source: 25
galactic coord. (B1950) longitude: 192,1 latitude: -40,1
GCI unit vector (J2000) X: 0,520728 Y: 0,852167 Z: -0,051511

magnitude:

visual 6,14 (observed) source: 25
photovisual 6,3 source: 2
photographic 6,3 source: 2

spectral information:

spectral class A2 source: 29
Morgan-Keenan A2V source: 25
B-magnitude 6,23 0,05 B-V-magnitude 0,09
U-magnitude 6,3 0,05 U-B-magnitude 0,07

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 6,8 arcsec
magnitude difference between brightest and second brightest component 1,37
position angle 347

component magnitude spectral class catalogue(s)/name(s)
A 4,79 G5 32 Eri, HR 1212, HD 24555, SAO 130806
B 6,14 A2 32 Eri, HR 1211, HD 24554, SAO 130805

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
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
25 Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
29 SAOJ2000
SAO on FK5 at J2000, 1989

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

position and proper motion:

position (J1950) RA: 3h 51min 46,545sec DEC: -3 5' 57,22'' 0,049 arcsec
position (J2000) RA: 3h 54min 17,385sec DEC: -2 57' 9,53''
proper motion J1950 (FK4) RA: 0,0016 arcsec/a DEC: 0,01 arcsec/a 0,009 arcsec/a in RA
0,008 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0019 arcsec/a DEC: 0,007 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 6,3 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class A2
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: 4705
Durchmusterung BD-03 631B
Boss General Catalogue 4705
Henry Draper Catalogue 24554

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

position and proper motion:

position (J2000) RA: 3h 54,3min DEC: -2 57'
proper motion (J2000) RA: 0,027 arcsec/a DEC: 0,019 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
AB 1822 96 347 6,8'' 4,77 6,14 G8III A2V STF 470
AC 1886 5 5 165,7'' 4,76 11,6 - STF 470

discoverer information:

discoverer code discoverer reference
STF 470 Struve, F.G.W. -

notes:

note 32 Eri. A is a spectroscopic binary.