n Scorpii


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 n Sco, 14 Sco, HR 6026, HD 145501, SAO 159763, WDS 16120-1928C
constellation Scorpius

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


position, motion, parallax:

position (J2000) RA: 16h 11min 58,6sec DEC: -19 26' 59''
position (J1900) RA: 16h 6min 9,8sec DEC: -19 11' 25''
proper motion (J2000) RA: -0,01 arcsec/a DEC: -0,009 arcsec/a
radial velocity -14 km/s
rotational velocity 67 km/s (uncertain) (variable)
trigonometric parallax 0,03 arcsec
note (category: radial and/or rotational velocities): ADS 9951D, -3k/s; vsini 73k/s.
note (category: dynamical parallaxes): 0.009".

magnitude

visual magnitude 6,3
(V on UBV Johnson system)

spectral / color information

spectral class B8V+B9VpSi
B-V-magnitude 0,13
U-B-magnitude -0,37
note (category: spectra): Also classified B9III+B9.5V.

double/multiple star system information

number of components of multiple star system 5
separation 41,1 arcsec
mag difference (of double or brightest multiple) 2,5
component ID AC
note (category: double and multiple data): ADS 9951 at least quintuple system with HR 6027 of which components CD = HR 6026 binary, 6.9 B8V or B9III, 7.9v B9Vp, sep. 2". C is -19d4332.

miscellaneous information

note (category: group membership): Sco OB2; Sco-Cen cluster; upper Sco member; reflection nebula and dust surrounding star. Assoc. Sco R1; IC 4592 at 145 pc.

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

position, motion, parallax:

position (J2000) RA: 16h 11min 58,603sec DEC: -19 27' 0,15'' 0,19 arcsec source: 16
proper motion (J2000) RA: -0,0003 arcsec/a DEC: -0,018 arcsec/a source: 25
radial velocity -14 km/s source: 25
trigonometric parallax 0,03 0,003 arcsec source: 25
galactic coord. (B1950) longitude: 354,62 latitude: 22,71
GCI unit vector (J2000) X: -0,428168 Y: -0,840115 Z: -0,332985

magnitude:

visual 6,3 (observed) source: 25
photovisual 6,2 source: 16
photographic 6,5 source: 2

spectral information:

spectral class A7 source: 96
Morgan-Keenan B8V+B9VpSi source: 25
B-magnitude 6,43 0,05 B-V-magnitude 0,13
U-magnitude 6,06 0,05 U-B-magnitude -0,37

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 41,2 arcsec
magnitude difference between brightest and second brightest component 1,9
position angle 337

component magnitude spectral class catalogue(s)/name(s)
A 4,01 B3 Jabbah, n Scorpii, 14 Sco, HR 6027, HD 145502, SAO 159764
B 6,3 A7 n Scorpii, 14 Sco, HR 6026, HD 145501, SAO 159763

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 9min 3,949sec DEC: -19 19' 17,45'' 0,03 arcsec
position (J2000) RA: 16h 11min 58,573sec DEC: -19 26' 58,71''
proper motion J1950 (FK4) RA: -0,0008 arcsec/a DEC: -0,012 arcsec/a 0,005 arcsec/a in RA
0,004 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0007 arcsec/a DEC: -0,009 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 6,5 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class A
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: 21771
Durchmusterung BD-19 4332
Boss General Catalogue 21771
Henry Draper Catalogue 145501

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

position and proper motion:

position (J2000) RA: 16h 12min DEC: -19 28'
proper motion (J2000) RA: -0,01 arcsec/a DEC: -0,026 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
Aa 1988 2 172 0,1'' 4,01 - B3V CHR 146
1989 165 -
Aa-B 1876 66 0,7'' 4,4 6,9 - BU 120
1991 - 1,3''
Aa-C 1821 40 337 41,2'' 4,4 6,26 - H 6
CD 1846 66 39 1,1'' 6,8 7,5 B8/9V MTL 2
1974 53 2,3''

discoverer information:

discoverer code discoverer reference
CHR 146 - -
BU 120 Burnham, S.W. -
H 6 Herschel, W. -
MTL 2 Mitchel, O.M. -

notes:

note Nu Sco. A is a spectroscopic and occultation binary. H V 6. Shows two spectra, B8V+B9VpSi, so the system is at least quintuple.