Nu Scorpii

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ν Scorpii
Epoch J2000.0
Constellation Scorpius
Right ascension 16h 11m 59.7s
Declination −19° 27' 39"
Distance 437 ± 65 ly (134 ± 20 pc)
Spectral type AB: B2IV + B2IV
CD: B8V + B9VpSi
Apparent magnitude combined: +4.00
AB: 4.4 + 6.9
CD: 6.5 + 7.9
Other designations
Jabbah, 14 Scorpii, HR 6026 + HR 6027, HD 145501 + HD 145502, SAO 159763 + SAO 159764, HIP 79374, ADS 9951,
CCDM 16120-1928

Nu Scorpii (ν Sco / ν Scorpii) is a star system in the constellation Scorpius. It also has the traditional name Jabbah, which means "forehead" in Arabic.

It is at least a quintuple star consisting of two close groups that are separated by 41". The brighter group, Nu Scorpii A and B, is split by 1.3" and composed of spectral type B2 subgiants. The fainter pair, Nu Scorpii C and D, are spectral type B8 and B9 main sequence dwarfs split by 2.4". Nu Scorpii A is itself a semi-detatched spectroscopic binary, having a fainter B-type companion separated by approximately 0.0003 arcseconds.

Since it is near the ecliptic, Nu Scorpii can be occulted by the Moon and very rarely by planets. Mercury occulted it on 14 December, 1821, but will not occult it again until 2 December 2031. The last occultation by Venus took place on 27 December 1852 and the next will take place on 30 December, 2095. On 29 July, 1808 there was an occultation by Neptune.




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