Back إكليل الجبهة (نجم) Arabic Nu Scorpii AST Jabbah German Nu Scorpii Spanish نو کژدم Persian Nu Scorpii French Jabbah Italian さそり座ニュー星 Japanese Jabbah Dutch Ni Scorpii Polish
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| ν Sco A | |
| Right ascension | 16h 11m 59.740s[1] |
| Declination | −19° 27′ 38.33″[1] |
| Apparent magnitude (V) | 4.349[1] |
| ν Sco B | |
| Right ascension | 16h 11m 59.746s[2] |
| Declination | −19° 27′ 36.94″[2] |
| Apparent magnitude (V) | 6.60[2] |
| ν Sco CD | |
| Right ascension | 16h 11m 58.603s[3] |
| Declination | −19° 27′ 00.15″[3] |
| Apparent magnitude (V) | 6.30[4] |
| Characteristics | |
| ν Sco AB | |
| Spectral type | B3V[5] / ? / ? / ? |
| U−B color index | –0.63[4] |
| B−V color index | +0.05[4] |
| ν Sco CD | |
| Spectral type | B9III[5] / B9III[5] / ? |
| U−B color index | –0.37[4] |
| B−V color index | +0.13[4] |
| Astrometry | |
| ν Sco AB | |
| Radial velocity (Rv) | 2.4 ± 5[6] km/s |
| Proper motion (μ) | RA: –7.65[7] mas/yr Dec.: –23.71[7] mas/yr |
| Parallax (π) | 6.88 ± 0.76 mas[7] |
| Distance | approx. 470 ly (approx. 150 pc) |
| ν Sco CD | |
| Radial velocity (Rv) | –14 ± 5[6] km/s |
| Proper motion (μ) | RA: –4.2[3] mas/yr Dec.: –18.0[3] mas/yr |
| Orbit[8] | |
| Primary | ν Sco Aa |
| Companion | ν Sco Ab |
| Period (P) | 5.55206 ± 0.00003 |
| Eccentricity (e) | 0.11 ± 0.05 |
| Periastron epoch (T) | 2442185.555 ± 0.349 |
| Argument of periastron (ω) (secondary) | 267 ± 23° |
| Semi-amplitude (K1) (primary) | 26.5 ± 1.3 km/s |
| Other designations | |
| ν Sco AB: BD–19° 4333, HD 145502, HIP 79374, HR 6027, SAO 159764[9] | |
| ν Sco CD: BD–19° 4332, HD 145501, HR 6026, SAO 159763[10] | |
| Database references | |
| SIMBAD | ν Sco |
| ν Sco A | |
| ν Sco B | |
| ν Sco CD | |
Nu Scorpii (ν Scorpii, abbreviated Nu Sco, ν Sco) is a multiple star system in the constellation of Scorpius. It is most likely a septuple star system,[5] consisting of two close groups (designated Nu Scorpii AB and CD) that are separated by 41 arcseconds.[5] Based on parallax measurements,[7] it is approximately 470 light-years from the Sun.
The component Nu Scorpii Aa is formally named Jabbah /ˈdʒæbə/.[11] (Contrast the similar-sounding Dschubba, Delta Scorpii.)
- ^ a b c Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- ^ a b c Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics. 384: 180–189. Bibcode:2002A&A...384..180F. doi:10.1051/0004-6361:20011822.
- ^ a b c d Roeser, S.; Bastian, U. (1988). "A new star catalogue of SAO type". Astronomy and Astrophysics Supplement Series. 74: 449–451. Bibcode:1988A&AS...74..449R.
- ^ a b c d e Nicolet, B. (1964). "Catalogue of homogeneous data in the UBV photoelectric photometric system". Astronomy and Astrophysics Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N. Color indices accessed using SIMBAD.
- ^ a b c d e Nu Scorpii Archived 2017-09-05 at the Wayback Machine, entry in the Multiple Star Catalog
- ^ a b Evans, D. S. (2006). "The Revision of the General Catalogue of Radial Velocities". Determination of Radial Velocities and Their Applications. 30: 57. Bibcode:1967IAUS...30...57E.
- ^ a b c d van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
- ^ Cite error: The named reference
Levatowas invoked but never defined (see the help page). - ^ a b "nu. Sco". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 February 2017.
- ^ "nu. Sco C". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 February 2017.
- ^ "Naming Stars". IAU.org. Retrieved 16 December 2017.