e 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

  5. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names e Ari, NSV 01001, 48 Ari, HR 887, HD 18519, SAO 75673, WDS 02592+2120B
constellation Aries

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


position, motion, parallax:

position (J2000) RA: 2h 59min 12,7sec DEC: +21 20' 25''
position (J1900) RA: 2h 53min 29,5sec DEC: +20 56' 26''
proper motion (J2000) RA: -0,017 arcsec/a DEC: -0,005 arcsec/a
radial velocity -6 km/s
note: variable radial velocity
rotational velocity 66 km/s (uncertain) (variable)
trigonometric parallax 0,005 arcsec
note (category: dynamical parallaxes): 0.012".

magnitude

visual magnitude 4,63
(V on UBV Johnson system)

spectral / color information

spectral class A2V s
B-V-magnitude 0,04
U-B-magnitude 0,08
R-I-magnitude 0,02

variability information

variable star identification 1001
note (category: variability): Uncertain if HR 887 or 888 is the variable suspect.

double/multiple star system information

number of components of multiple star system 3
separation 1,5 arcsec
mag difference (of double or brightest multiple) 0,3
component ID AB
note (category: double and multiple data): Binary with HR 888. Mag. and colors for combined light.

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

position, motion, parallax:

position (J2000) RA: 2h 59min 12,713sec DEC: +21 20' 25,19'' 0,35 arcsec source: 17
proper motion (J2000) RA: -0,001 arcsec/a DEC: -0,004 arcsec/a source: 25
radial velocity -6 km/s source: 25
trigonometric parallax 0,005 - source: 25
galactic coord. (B1950) longitude: 158,7 latitude: -32,51
GCI unit vector (J2000) X: 0,660885 Y: 0,656355 Z: 0,363907

magnitude:

visual 4,63 (observed) source: 25
photovisual 5,6 source: 2
photographic 5,6 source: 16

spectral information:

spectral class A2 source: 16
Morgan-Keenan A2Vs source: 25
B-magnitude 4,67 0,05 B-V-magnitude 0,04
U-magnitude 4,75 0,05 U-B-magnitude 0,08

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 1,5 arcsec
magnitude difference between brightest and second brightest component 0,3
position angle 208

component magnitude spectral class catalogue(s)/name(s)
A 4,63 A2 e Arietis, 48 Ari, HR 887, HD 18519, SAO 75673
B 4,63 A2 e Arietis, 48 Ari, HR 888, HD 18520, SAO 75673

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
17 ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 1991
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

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

position and proper motion:

position (J1950) RA: 2h 56min 20,825sec DEC: +21 8' 29,91'' 0,009 arcsec
position (J2000) RA: 2h 59min 12,696sec DEC: +21 20' 25,1''
proper motion J1950 (FK4) RA: -0,0012 arcsec/a DEC: -0,002 arcsec/a 0,002 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0012 arcsec/a DEC: -0,005 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 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: 3582
Durchmusterung BD+20 484
Boss General Catalogue 3582
Henry Draper Catalogue 18519
The "SAO Catalog" entry refers to two consecutive HD numbers, the lower of which is given.

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

position and proper motion:

position (J2000) RA: 2h 59,2min DEC: +21 20'
proper motion (J2000) RA: -0,014 arcsec/a DEC: -0,004 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 1827 often 186 0,5'' 5,2 5,5 A2Vs A2Vs STF 333
1992 208 1,5''
AC 1912 2 192 145,4'' - 12,7 - STF 333
1922 191 146,3''

discoverer information:

discoverer code discoverer reference
STF 333 Struve, F.G.W. -

notes:

note Epsilon Ari. Variable velocity suspected.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 2h 56min 20,8sec DEC: +21 8' 30''

variability informations:

variability type -
magnitute at max. brightness 4,63
magnitute at min. brightness
photometric system visual, photovisual or Johnson's V

spectral information

spectral class A2

references

to a study 0132D (designation: 333)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).