HD 206267

---

title: "HD 206267" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["cepheus-(constellation)", "henry-draper-catalogue-objects", "bright-star-catalogue-objects", "triple-star-systems", "o-type-main-sequence-stars", "hipparcos-objects", "durchmusterung-objects"] description: "Star in the constellation Cepheus" topic_path: "science/astronomy" source: "https://en.wikipedia.org/wiki/HD_206267" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Star in the constellation Cepheus ::

| name=HD 206267A | epoch=J2000 | ra= | dec= | appmag_v=5.70 | constell=Cepheus | class=O6V((f)) + O9V | b-v=+0.22 | u-b=−0.72 | variable= | radial_v=−7.8 | prop_mo_ra=−1.25 | prop_mo_dec=−4.58 | parallax=1.65 | p_error=0.63 | parallax_footnote= | absmag_v=+4.65 | reference = | primary = Aa1 (or Aa) | name = Aa2 (or Ab) | period_unitless = 3.71 days | eccentricity = 0.131 | k1 = 186.1 | k2 = 295.5 | reference = | primary = Aa (or Aab) | name = Ab (or Ac) | period = 143.6 | axis = 0.1 | source = | component1 = Aa1 (or Aa) | mass = 27.8 | radius = 11.7 | luminosity = 347,000 | temperature = 41,000 | gravity = 3.75 | metal = | rotation = | component2 = Aa2 (or Ab) | mass2 = 17.7 | radius2 = 5.9 | luminosity2 = 50,119 | temperature2 = 35,500 | gravity2 = 4.14 | metal2 = | rotation2 = | age_myr2 = | component1 = Ab (or Ac) | mass = 10.0 | names=BD+56 2617, FK5 813, HD 206267, HIP 106886, HR 8281. }} | Simbad=HD+206267 ::figure[src="https://upload.wikimedia.org/wikipedia/commons/b/bd/Elephant's_Trunk_nebula.jpg" caption="HD 206627 is the brightest star in the centre of the nebula [[IC 1396]], which it ionises."] ::

HD 206267A is a hierarchical triple star system in the northern circumpolar constellation of Cepheus. Two of the members form a spectroscopic binary that orbit each other with a period of 3.7 days, while a third member lies further away—it is unclear whether this third member is gravitationally bound to the pair. The system is emitting a stellar wind that reaches an exceptional velocity of 3,225 km/s, among the highest measured for stars of this type.

This stellar system lies in the nebula IC 1396. All three components are massive stars, and the intense ultraviolet radiation they give off ionizes the gas of IC 1396, and causes compression denser globules of the nebula, leading to star formation. The stellar wind produced by the stars is strong enough to strip nearby stars of their protoplanetary disks.

The system is a member of the Cepheus OB2 stellar association, which notably includes evolved blue and red supergiants such as Nu Cephei, Mu Cephei, and VV Cephei. In particular, it is surrounded by a loose cluster of stars, Trumpler 37, including a 13th-magnitude star at and a 7th-magnitude star away. The cluster may contain over a thounsand stars in total.

References

| title=Validation of the new Hipparcos reduction | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | s2cid=18759600 }}

| last=Wilson | first=R. E. | year=1953 | title=General Catalogue of Stellar Radial Velocities | journal=Carnegie Institute Washington D.C. Publication | publisher=Carnegie Institute of Washington D.C. | bibcode=1953GCRV..C......0W

| last1=Mermilliod | first1=J.-C. | title=Compilation of Eggen's UBV data, transformed to UBV (unpublished) | journal=Catalogue of Eggen's UBV Data. SIMBAD | date=1986 | bibcode=1986EgUBV........0M

| display-authors=1 | last1=Wojdowski | first1=P. S. | last2=Schulz | first2=N. S. | last3=Ishibashi | first3=K. | last4=Huenemoerder | first4=D. P. | title=The Hot Star Triplet HD 206267A | journal=High Resolution X-ray Spectroscopy with XMM-Newton and Chandra, Proceedings of the International Workshop Held at the Mullard Space Science Laboratory of University College London, Holmbury St Mary, Dorking, Surrey, UK, October 24–25, 2002 | date=December 2002 | page=49 | bibcode=2002hrxs.confE..49W

| display-authors=1 | last1=Nakano | first1=M. | last2=Sugitani | first2=K. | last3=Watanabe | first3=M. | last4=Fukuda | first4=N. | last5=Ishihara | first5=D. | last6=Ueno | first6=M. | title=Wide-field Survey of Emission-line Stars in IC 1396 | journal=The Astronomical Journal | volume=143 | issue=3 | id=61 | pages=14 | date=March 2012 | doi=10.1088/0004-6256/143/3/61 | bibcode=2012AJ....143...61N | arxiv = 1201.2761 | s2cid=119298524 }}

| display-authors=1 | last1=Saurin | first1=T. A. | last2=Bica | first2=E. | last3=Bonatto | first3=C. | title=The embedded cluster or association Trumpler 37 in IC 1396: a search for evolutionary constraints | journal=Monthly Notices of the Royal Astronomical Society | volume=421 | issue=4 | pages=3206–3216 | date=April 2012 | doi=10.1111/j.1365-2966.2012.20541.x | doi-access=free | bibcode=2012MNRAS.421.3206S |arxiv = 1201.2704 | s2cid=53698151 }}

References

1. Humphreys, R. M.. (1978-12-01). "Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way.". The Astrophysical Journal Supplement Series.
2. (2018). "The Updated Multiple Star Catalog". The Astrophysical Journal Supplement Series.
3. (2013). "The stellar content of the young open cluster Trumpler 37". Astronomische Nachrichten.
4. (2018). "Fundamental parameters of massive stars in multiple systems: The cases of HD 17505A and HD 206267A". Astronomy and Astrophysics.
5. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal.
6. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::