Iota1 Muscae

{{other stars by Bayer designation|Iota Muscae{{!}}ι Muscae}}

{{Starbox begin

| name = ι¹ Muscae

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Musca

| ra = {{RA|13|25|07.11942}}

| dec = {{DEC|−74|53|16.1512}}

| appmag_v = 5.05

}}

{{Starbox character

| type = red clump

| class = K0 III

| b-v = +1.11

| u-b = +1.01

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|27.5|0.8}}

| prop_mo_ra = −107.80

| prop_mo_dec = −132.25

| parallax = 14.7839

| p_error = 0.1205

| parallax_footnote =

| absmag_v = +0.88

}}

{{Starbox detail

| mass = 1.5

| radius = {{Val|11.78|0.22|0.47}}

| gravity = 2.64

| metal_fe = −0.10

| age_myr =

| luminosity = {{Val|56.5|0.6}}

| temperature = {{Val|4610|96|42|fmt=commas}}

| rotational_velocity = 4.27

}}

{{Starbox catalog

| names = {{odlist | B=ι¹ Mus | CPD=−74°1057 | FK5=3070 | HD=116244 | HIP=65468 | HR=5042 | SAO=257041 }}

}}

{{Starbox reference

| Simbad = iot01+Mus

}}

ι¹ Muscae, Latinised as Iota¹ Muscae, is a solitary star in the southern constellation of Musca, near the southern constellation border with Chamaeleon. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude is 5.05. The star is located around 222 light-years distant from the Sun based on parallax, and is drifting further away with a radial velocity of 27.5 km/s.

This object is an aging giant star with a stellar classification of K0III; a star that has used up its core hydrogen and is cooling and expanding. At present it has nearly 12 times the girth of the Sun. The star is radiating 56.5 times the luminosity of the Sun from its swollen photosphere at an effective temperature of about {{Val|4610|fmt=commas|ul=K}}.

References

{{reflist|refs=

{{cite journal |bibcode=2020A&A...633A..34C |title=Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era |last1=Charbonnel |first1=C. |last2=Lagarde |first2=N. |last3=Jasniewicz |first3=G. |last4=North |first4=P. L. |last5=Shetrone |first5=M. |last6=Krugler Hollek |first6=J. |last7=Smith |first7=V. V. |last8=Smiljanic |first8=R. |last9=Palacios |first9=A. |last10=Ottoni |first10=G. |journal=Astronomy and Astrophysics |date=2020 |volume=633 |pages=A34 |doi=10.1051/0004-6361/201936360 |arxiv=1910.12732 }}

{{cite journal |bibcode=2024A&A...683A.125P |title=Analysis of the public HARPS/ESO spectroscopic archive. Ca II H&K time series for the HARPS radial velocity database |last1=Perdelwitz |first1=V. |last2=Trifonov |first2=T. |last3=Teklu |first3=J. T. |last4=Sreenivas |first4=K. R. |last5=Tal-Or |first5=L. |journal=Astronomy and Astrophysics |date=2024 |volume=683 |doi=10.1051/0004-6361/202348263 |arxiv=2311.12438 }}

{{cite journal |bibcode=2012MNRAS.419.1637L |title=A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars |last1=Laney |first1=C. D. |last2=Joner |first2=M. D. |last3=Pietrzyński |first3=G. |journal=Monthly Notices of the Royal Astronomical Society |date=2012 |volume=419 |issue=2 |page=1637 |doi=10.1111/j.1365-2966.2011.19826.x |doi-access=free |arxiv=1109.4800 }}

{{citation

| 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 | postscript=. }}

{{citation

| title=XHIP: An extended hipparcos compilation

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012