Jabbah
catalogues and names
catalogues and names | Jabbah, n Sco, 14 Sco, HR 6027, HD 145502, SAO 159764, BD -19 4333, WDS 16120-1928A |
constellation | Scorpius |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
note (category: star names): | Jabbah. |
position, motion, parallax:
position (J2000) | RA: 16h 11min 59.7sec | DEC: -19° 27' 38'' | ||
position (2000.73) | RA: 16h 12min 3sec | DEC: -19° 27' 45'' | ||
position (B1900) | RA: 16h 6min 10.9sec | DEC: -19° 12' 3'' | ||
proper motion (J2000) | RA: -0.01 arcsec/a | DEC: -0.023 arcsec/a | ||
radial velocity | 2 km/s note: spectroscopic binaries note: orbital data avaible |
|||
rotational velocity | 199 km/s (uncertain) (variable) | |||
trigonometric parallax | 0.03 arcsec | |||
galactic coordinates | longitude: 354.61° | latitude: 22.7° |
note (category: dynamical parallaxes): | 0.005". |
magnitude
visual magnitude | 4.01 (V on UBV Johnson system) |
spectral / color information
spectral class | B3V |
B-V-magnitude | 0.04 |
U-B-magnitude | -0.65 |
R-I-magnitude |
note (category: spectra): | H strong; SiIV weak for the spectral type. |
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 9951A is SB, 4.9, 6.9v, sep. 0.0003". AB, binary. Component B, 6.9v at 1". Components CD at 41" = HR 6026, q.v. HR 6026, q.v. |
note (category: spectroscopic binaries): | ADS 9951A 5.9222d, K 26.4k/s, V0 +1.4k/s, asini 2.15. |
miscellaneous information
note (category: group membership): | Sco OB2; Sco-Cen assoc.; probable member of Sco-Cen cluster; upper Sco member; in reflection nebula, assoc. Sco R1; IC 4592 at 145 pc. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 16h 11min 59.729sec | DEC: -19° 27' 38.59'' | ±0.19 arcsec | source: 16 |
position (2000.73) | RA: 16h 12min 3sec | DEC: -19° 27' 46'' | JD: 2451810.12 | |
proper motion (J2000) | RA: -0.0006 arcsec/a | DEC: -0.029 arcsec/a | source: 25 | |
radial velocity | 2 km/s | source: 25 | ||
trigonometric parallax | 0.03 arcsec | ±0.003 arcsec | source: 25 | |
galactic coord. (B1950) | longitude: 354.61° | latitude: 22.7° |
magnitude:
visual | 4.01 (observed) | source: 25 |
photovisual | 3.8 | source: 16 |
photographic | 4.1 | source: 2 |
spectral information:
spectral class | B3 | source: 96 | |
Morgan-Keenan | B3V | source: 25 | |
B-magnitude | 4.05 ±0.05 | B-V-magnitude | 0.04 |
U-magnitude | 3.4 ±0.05 | U-B-magnitude | -0.65 |
double/multiple star system information:
separation between brightest and second brightest component | 0.1 arcsec |
position angle | 165 ° |
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 (B1950) | RA: 16h 9min 5.091sec | DEC: -19° 19' 56.2'' | ±0.01 arcsec |
position (2000.73) | RA: 16h 12min 2sec | DEC: -19° 27' 43'' | JD: 2451810.12 |
position (J2000) | RA: 16h 11min 59.728sec | DEC: -19° 27' 38.08'' | |
proper motion B1950 (FK4) | RA: -0.0008 arcsec/a | DEC: -0.026 arcsec/a | ±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: -0.0007 arcsec/a | DEC: -0.023 arcsec/a | |
source of proper motion data | Determined by source catalog |
magnitude:
visual | 4.3 (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: 21773 |
Durchmusterung | BD-19 4333 |
Boss General Catalogue | 21773 |
Henry Draper Catalogue | 145502 |
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. |
additional / editable data
entry 1 (3/26/00,2:18:25 PM) |