e Lupi


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 e Lup, NSV 20302, HR 5708, HD 136504, SAO 225712, WDS 15227-4441A
constellation Lupus

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


position, motion, parallax:

position (J2000) RA: 15h 22min 40,9sec DEC: -44 41' 22''
position (J1900) RA: 15h 15min 53,3sec DEC: -44 19' 47''
proper motion (J2000) RA: -0,019 arcsec/a DEC: -0,013 arcsec/a
radial velocity 8 km/s
note: spectroscopic binaries, double lined spectra
note: orbital data avaible
rotational velocity 133 km/s (uncertain) (variable)
dynamical parallax 0,009 arcsec
note (category: radial and/or rotational velocities): Comp. C, -26k/s.

magnitude

visual magnitude 3,37
(V on UBV Johnson system)

spectral / color information

spectral class B2IV-V
B-V-magnitude -0,18
U-B-magnitude -0,75
R-I-magnitude -0,16

variability information

variable star identification Var?
note (category: variability): Var? Amp. 0.015b.

double/multiple star system information

number of components of multiple star system 3
separation 0,4 arcsec
mag difference (of double or brightest multiple) 1,5
component ID AB
note Worley (1978) update of the IDS
note (category: double and multiple data): AB binary. Combined mag., colors. C, 9v at 27" probably optical.
note (category: spectroscopic binaries): Primary of visual system, 4.5598d, K 56.1k/s, V0 +7.9k/s, msin3i 0.404, asini 3.40.

miscellaneous information

note (category: group membership): Upper Cen group of Sco-Cen assoc.

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

position, motion, parallax:

position (J2000) RA: 15h 22min 40,869sec DEC: -44 41' 22,63'' 0,19 arcsec source: 16
proper motion (J2000) RA: -0,0016 arcsec/a DEC: -0,028 arcsec/a source: 25
radial velocity 8 km/s source: 25
galactic coord. (B1950) longitude: 329,23 latitude: 10,32
GCI unit vector (J2000) X: -0,450573 Y: -0,54991 Z: -0,703266

magnitude:

visual 3,37 (observed) source: 25
photovisual 2,8 source: 16
photographic 3,6 source: 2

spectral information:

spectral class B3 source: 96
Morgan-Keenan B2IV-V source: 25
B-magnitude 3,19 0,05 B-V-magnitude -0,18
U-magnitude 2,44 0,05 U-B-magnitude -0,75

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 0,3 arcsec
magnitude difference between brightest and second brightest component 1,7
position angle 176

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: 15h 19min 16,513sec DEC: -44 30' 40,2'' 0,034 arcsec
position (J2000) RA: 15h 22min 40,863sec DEC: -44 41' 21,92''
proper motion J1950 (FK4) RA: -0,0018 arcsec/a DEC: -0,015 arcsec/a 0,006 arcsec/a in RA
0,004 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0018 arcsec/a DEC: -0,013 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,7 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class B3
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: 20659
Durchmusterung CD-4410066
Boss General Catalogue 20659
Henry Draper Catalogue 136504

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

position and proper motion:

position (J2000) RA: 15h 22,7min DEC: -44 41'
proper motion (J2000) RA: -0,014 arcsec/a DEC: -0,018 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 1896 30 282 1,3'' 3,6 5,3 B2IV-V COP 2
1992 176 0,3''
AC 1826 12 174 26,4'' 3,6 9,1 - DUN 182
1980 169 -

discoverer information:

discoverer code discoverer reference
COP 2 - -
DUN 182 Dunlop, J. -

notes:

note Epsilon Lup. A is a spectroscopic binary.