l Arietis


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 l Ari, 9 Ari, HR 569, HD 11973, SAO 75051, WDS 01579+2336A
constellation Aries

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


position, motion, parallax:

position (J2000) RA: 1h 57min 55,7sec DEC: +23 35' 46''
position (J1900) RA: 1h 52min 21,2sec DEC: +23 6' 30''
proper motion (J2000) RA: -0,09 arcsec/a DEC: -0,013 arcsec/a
radial velocity -1 km/s
note: spectroscopic binaries
rotational velocity 99 km/s (uncertain) (variable)
trigonometric parallax 0,028 arcsec

magnitude

visual magnitude 4,79
(V on UBV Johnson system)

spectral / color information

spectral class F0V
B-V-magnitude 0,28
U-B-magnitude 0,09
R-I-magnitude 0,16

variability information

variable star identification 680
note (category: variability): ADS 1563B; Cst? 7.30 - 740V.

double/multiple star system information

number of components of multiple star system 4
separation 37,4 arcsec
mag difference (of double or brightest multiple) 2,5
component ID AB
note (category: double and multiple data): ADS 1563B, 7.40V, +0.58(B-V), +0.07(U-B), dG1, CPM; vsini =<25k/s.

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

position, motion, parallax:

position (J2000) RA: 1h 57min 55,706sec DEC: +23 35' 45,67'' 0,43 arcsec source: 16
proper motion (J2000) RA: -0,0071 arcsec/a DEC: -0,016 arcsec/a source: 25
radial velocity -1 km/s source: 25
trigonometric parallax 0,028 0,003 arcsec source: 25
galactic coord. (B1950) longitude: 142,05 latitude: -36,8
GCI unit vector (J2000) X: 0,797727 Y: 0,451003 Z: 0,400285

magnitude:

visual 4,79 (observed) source: 25
photovisual 4,8 source: 2
photographic 5 source: 16

spectral information:

spectral class A5 source: 96
Morgan-Keenan F0V source: 25
B-magnitude 5,07 0,05 B-V-magnitude 0,28
U-magnitude 5,16 0,05 U-B-magnitude 0,09

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 38,5 arcsec
position angle 47

component magnitude spectral class catalogue(s)/name(s)
A 4,79 A5 l Arietis, 9 Ari, HR 569, HD 11973, SAO 75051
B 7,37 G0

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: 1h 55min 8,177sec DEC: +23 21' 11,25'' 0,011 arcsec
position (J2000) RA: 1h 57min 55,729sec DEC: +23 35' 45,9''
proper motion J1950 (FK4) RA: -0,0065 arcsec/a DEC: -0,009 arcsec/a 0,002 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0065 arcsec/a DEC: -0,013 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,8 (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: 2366
Durchmusterung BD+22 288
Boss General Catalogue 2366
Henry Draper Catalogue 11973

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

position and proper motion:

position (J2000) RA: 1h 57,9min DEC: +23 36'
proper motion (J2000) RA: -0,092 arcsec/a DEC: -0,017 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 1781 37 46 37,4'' - 7,33 F0IV F7V H 12
1972 47 38,5''
AC 1923 1 75 179,2'' - 9,7 F0IV K H 12
AD 1923 1 84 261,2'' - 11,55 F0IV H 12

discoverer information:

discoverer code discoverer reference
H 12 Herschel, W. -

notes:

note H V 12. Lambda Ari. A is a Beta Lyrae-type and spectroscopic binary. B is BD+22@289.