Surf Wiki
Save to docs
general/k-type-giants

From Surf Wiki (app.surf) — the open knowledge base

Iota Sagittarii

Astrometric binary star in the constellation Sagittarius

Summary

Astrometric binary star in the constellation Sagittarius

| b-v = +1.084 | u-b = +0.911 Iota Sagittarii (Iota Sgr, ι Sagittarii, ι Sgr) is a star in the zodiac constellation of Sagittarius. With an apparent visual magnitude of +4.118, it is bright enough to be viewed with the naked eye. Based upon an annual parallax shift of 17.94 mas as seen from Earth, this star is located 182 light years from the Sun. It is moving away from the Earth with a radial velocity of +35.8 km/s.

This is a probable astrometric binary, based upon proper motion data collected during the Hipparcos mission. The visible component shows the spectrum of an evolved K-type giant or bright giant star with a stellar classification of K0 II-III. The measured angular diameter, after correction for limb darkening, is . At an estimated distance of this star, this yields a physical size of about 15 times the radius of the Sun. It has 1.4 times the mass of the Sun and is radiating 87 times the Sun's luminosity from its enlarged photosphere at an effective temperature of about 4,594 K.

References

| display-authors=1 | last1=Richichi | first1=A.

| display-authors=1 | last1=Frankowski | first1=A.

| doi-access=free | arxiv=0806.2878 | s2cid=14878976 | postscript=. }}

References

  1. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal.
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.

k-type-giants bayer-objects sagittarius-(constellation) durchmusterung-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects astrometric-binaries
Want to explore this topic further?

Ask Mako anything about Iota Sagittarii — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report