Pi1 Columbae

{{Short description|Star in the constellation Columba}}

{{DISPLAYTITLE:Pi¹ Columbae}}

{{other stars by Bayer designation|Pi Columbae{{!}}π Columbae}}

{{Starbox begin

| name = Pi¹ Columbae

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Columba

| ra = {{RA|06|06|41.03304}}

| dec = {{DEC|−42|17|55.5846}}

| appmag_v = 6.13

}}

{{Starbox character

| type =

| class = A2mA5-A9

| b-v = +0.25

| u-b = +0.11

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|2.0|4.3}}

| prop_mo_ra = −26.957

| prop_mo_dec = −5.880

| parallax = 11.6365

| p_error = 0.1653

| parallax_footnote =

| absmag_v = +1.55

}}

{{Starbox detail

| source =

| mass =

| radius = {{Val|2.49|0.15|0.11}}

| luminosity = {{Val|20.237|0.23|0.33}}

| temperature = {{Val|7765|171|228|fmt=commas}}

| gravity =

| metal_fe =

| rotational_velocity = 70

| age_gyr =

}}

{{Starbox catalog

| names = {{odlist | B=π¹ Col | CPD=−42°2343 | HD=42078 | HIP=28957 | HR=2171 | SAO=217720 | GC=7785 }}

}}

{{Starbox reference

| Simbad = pi01+Col

}}

{{starbox end}}

Pi¹ Columbae, Latinized from π¹ Columbae, is a star in the southern constellation of Columba. With an apparent visual magnitude of 6.13, it is a dim, white-hued star that is near the limit of visibility for the naked eye. It is located approximately 280 light years from the Sun based on parallax, and has an absolute magnitude of +1.55.

This is an Am star with a stellar classification of A2mA5-A9. It has 2.5 times the Sun's radius and shines with 20 times the luminosity of the Sun at an effective temperature of 7,765 K. The star is spinning with a projected rotational velocity of 70 km/s.

References

{{reflist|refs=

{{cite DR2|5572227317849385600}}

{{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

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}

{{citation

| last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C.

| title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project

| journal=Astronomy & Astrophysics

| volume=546 | id=A61 | pages=14 | date=October 2012

| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D

| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}

{{citation

| last1=Houk | first1=Nancy

| title=Michigan catalogue of two-dimensional spectral types for the HD stars

| volume=2 | publication-place=Ann Arbor

| publisher=Dept. of Astronomy, University of Michigan

| year=1978 | bibcode=1978mcts.book.....H | postscript=. }}

{{citation

| title=Photoelectric UBVRI observations of AM stars

| last1=Feinstein | first1=A. | journal=Astronomical Journal

| volume=79 | page=1290 | date=1974 | postscript=.

| bibcode=1974AJ.....79.1290F | doi=10.1086/111675 }}

{{citation

| last=Levato | first=O. H.

| title=Rotational Velocities and Spectral Types of Some A-Type Stars

| journal=Publications of the Astronomical Society of the Pacific

| volume=84 | issue=500 | page=584 | date=August 1972

| doi=10.1086/129336 | bibcode=1972PASP...84..584L | doi-access=free }}

{{cite simbad

| title=pi01 Col

| accessdate=2019-10-14 | postscript=. }}

}}

{{Stars of Columba|state=collapsed}}

{{DEFAULTSORT:Pi1 Columbae}}

Category:Am stars

Category:Columba (constellation)

Category:Durchmusterung objects