Pi3 Orionis

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"Tabit" redirects here. For the town in Sudan, see
π Orionis
.
π3 Orionis
Location of π3 Orionis (circled)
Observation data
J2000.0
Constellation Orion
Right ascension 04h 49m 50.41091s[1]
Declination +06° 57′ 40.5883″[1]
Apparent magnitude (V) 3.16[2]
Characteristics
Spectral type F6 V[2]
U−B color index +0.00[2]
B−V color index +0.46[2]
Variable type Suspected[3]
Distance
26.32 ± 0.04 ly
(8.07 ± 0.01 pc)
Absolute magnitude (MV)3.65[5]
Details
Gyr
LTT 11517, SAO 112106[10]
Database references
SIMBADdata

Pi3 Orionis (π3 Orionis, abbreviated Pi3 Ori, π3 Ori), also named Tabit

readily visible to the naked eye and is the brightest star in the lion's hide (or shield) that Orion is holding. As measured using the parallax technique, it is 26.32 light-years (8.07 parsecs) distant from the Sun.[1]

Nomenclature

π3 Orionis (Latinised to Pi3 Orionis) is the system's Bayer designation.

It bore the traditional name of 'Tabit', from the

Working Group on Star Names (WGSN)[14] to catalog and standardize proper names for stars. The WGSN approved the name Tabit for this star on 5 September 2017 and it is now so included in the List of IAU-approved Star Names.[12]

In

Chinese name for Pi3 Orionis itself is 參旗六 (Zhāng Qí Liù), "the Sixth Star of Banner of Three Stars".[16]

According to Richard Hinckley Allen: Star Names – Their Lore and Meaning, this star, together with ο1 Orionis, ο2 Orionis, π1 Orionis, π2 Orionis, π4 Orionis, π5 Orionis, π6 Orionis and 6 Orionis (are all of the 4th to the 5th magnitudes and in a vertical line), indicate the lion's skinwere but Al Tizini said that they were the Persians' Al Tāj, "the Crown", or "Tiara", of their kings; and the Arabians' Al Kumm, "the Sleeve", of the garment in which they dressed the Giant, the skin being omitted.

Grotius gave a lengthy dissertation on the Mantile, which some anonymous person applied to them, figured as a cloth thrown over the Giant's arm.[17]

Properties

Pi3 Orionis is most likely single; a nearby star is probably an optical companion.[18]

It is a

F-type star
.

Although a periodicity of 73.26 days has been observed in the star's radial velocity, it seems likely to be bound more to stellar activity than to a planetary object in close orbit. No substellar companion has been detected so far around Pi3 Orionis and the McDonald Observatory team has set limits to the presence of one or more planets[20] with masses between 0.84 and 46.7 Jupiter masses and average separations spanning between 0.05 and 5.2 astronomical units. Thus, so far it appears that planets could easily orbit in the habitable zone without any complications caused by a gravitationally perturbing body.

See also

References

  1. ^
    S2CID 18759600
    .
  2. ^
    doi:10.1086/145697
    .
  3. Bibcode:1981NVS...C......0K
    .
  4. Bibcode:1967IAUS...30...57E
    .
  5. ^
    S2CID 118577511. Note: see VizieR catalogue V/130
    .
  6. ^
    S2CID 18775378 Note: see VizieR catalogue J/ApJS/168/297
    .
  7. ^
    S2CID 18993744
    . See Table 10.
  8. ^
    Bibcode:1977AcA....27..145K
    .
  9. Bibcode:1970CoAsi.239....1B
    .
  10. ^ "pi03 Ori". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2011-01-07.
  11. S2CID 120743052
    .
  12. ^ a b "Naming Stars". IAU.org. Retrieved 16 December 2017.
  13. ISBN 978-0521899352
  14. ^ "IAU Working Group on Star Names (WGSN)". Retrieved 22 May 2016.
  15. ISBN 978-986-7332-25-7
    .
  16. ^ (in Chinese) 香港太空館 - 研究資源 - 亮星中英對照表 Archived 2008-10-25 at the Wayback Machine, Hong Kong Space Museum. Accessed on line November 23, 2010.
  17. ISBN 0-486-21079-0
    , retrieved 2018-07-28.
  18. S2CID 14878976
    .
  19. Bibcode:1993AAS...183.1710G, archived from the original
    on 2019-06-25, retrieved 2012-02-04
  20. S2CID 16755455
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=Pi3_Orionis&oldid=1170340868"