e Normae


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 Nor, HR 6115, HD 147971, SAO 226773, WDS 16272-4733A
constellation Norma

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


position, motion, parallax:

position (J2000) RA: 16h 27min 11,1sec DEC: -47 33' 18''
position (J1900) RA: 16h 19min 50,9sec DEC: -47 19' 36''
proper motion (J2000) RA: -0,005 arcsec/a DEC: -0,03 arcsec/a
radial velocity -12 km/s
note: spectroscopic binaries, double lined spectra
note: orbital data avaible
rotational velocity 165 km/s (uncertain) (variable)

magnitude

visual magnitude 4,47
(V on UBV Johnson system)

spectral / color information

spectral class B4V
B-V-magnitude -0,07
U-B-magnitude -0,53
R-I-magnitude -0,04

double/multiple star system information

separation 22,8 arcsec
mag difference (of double or brightest multiple) 2,7
note Worley (1978) update of the IDS
note (category: double and multiple data): Companion 7.46v B9V, CPM, possibly binary with the SB.
note (category: spectroscopic binaries): Primary of visual double, B2, B9.5, 3.2617d, K 122.5k/s, V0 -12.5k/s, asini 5.45. Equal components.

miscellaneous information

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

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

position, motion, parallax:

position (J2000) RA: 16h 27min 11,01sec DEC: -47 33' 17,68'' 0,19 arcsec source: 16
proper motion (J2000) RA: -0,0021 arcsec/a DEC: -0,033 arcsec/a source: 25
radial velocity -12 km/s source: 25
galactic coord. (B1950) longitude: 336,01 latitude: 0,98
GCI unit vector (J2000) X: -0,265909 Y: -0,62029 Z: -0,737924

magnitude:

visual 4,46 (observed) source: 25
photovisual 4,8 source: 16
photographic 4,7 source: 2

spectral information:

spectral class B5 source: 96
Morgan-Keenan B4V source: 25
B-magnitude 4,39 0,05 B-V-magnitude -0,07
U-magnitude 3,86 0,05 U-B-magnitude -0,53

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 22,8 arcsec
magnitude difference between brightest and second brightest component 2,66
position angle 335

component magnitude spectral class catalogue(s)/name(s)
A 4,46 B5 e Normae, HR 6115, HD 147971, SAO 226773
B 7,57 A7

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: 16h 23min 30,537sec DEC: -47 26' 34,34'' 0,03 arcsec
position (J2000) RA: 16h 27min 11,083sec DEC: -47 33' 18,2''
proper motion J1950 (FK4) RA: -0,0004 arcsec/a DEC: -0,03 arcsec/a 0,007 arcsec/a in RA
0,005 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0005 arcsec/a DEC: -0,029 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 B5
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: 22106
Durchmusterung CD-4710765
Boss General Catalogue 22106
Henry Draper Catalogue 147971

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

position and proper motion:

position (J2000) RA: 16h 27,2min DEC: -47 33'
proper motion (J2000) RA: -0,009 arcsec/a DEC: -0,009 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 14 335 22,8'' 4,54 7,2 B2V HJ 4853

discoverer information:

discoverer code discoverer reference
HJ 4853 Herschel, J. -

notes:

note Epsilon Nor. The primary is a spectroscopic binary. B is CD-47@10764. Proper motion of B -010 -026.