Pi2 Doradus

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

{{Starbox begin

| name = π² Doradus

}}

{{Starbox image

| image =

{{Location mark

| image = Dorado constellation map.svg

| float = center | width = 260 | position = right

| mark = Red circle.svg | mark_width = 8 | mark_link = Pi2 Doradus

| x = 225 | y = 1060

}}

| caption = Location of π² Doradus on the map (circled)

}}

{{Starbox observe

| epoch = J2000.0 (ICRS)

| constell = Dorado

| ra = {{RA|06|25|28.63069}}

| dec = {{DEC|−69|42|25.0800}}

| appmag_v = 5.38

}}

{{Starbox character

| type = horizontal branch

| class = G8 III

| b-v = +0.97

| u-b = +0.67

}}

{{Starbox astrometry

| radial_v = 9.1{{±|2.8}}

| parallax = 11.7563

| p_error = 0.058

| parallax_footnote =

| prop_mo_ra = −12.184

| prop_mo_dec = +200.786

| pm_footnote =

| absmag_v = +0.78

}}

{{Starbox detail

| source =

| mass = 1.80{{±|0.07}}

| radius = 9.84{{±|0.16}}

| luminosity = 51.1{{±|1.1}}

| gravity = 2.66{{±|0.08}}

| temperature = 4,919{{±|29}}

| metal_fe = −0.26{{±|0.03}}

| rotational_velocity = <2.0

| age_gyr = 1.61{{±|0.15}}

}}

{{Starbox catalog

| names = {{odlist|B = π² Dor|Gould = 42 G. Doradus|CD = −69°392|CPD = −69°614|FK5 = 2495|GC = 8390|HD = 46116|HIP = 30565|HR = 2327|SAO = 249550|TIC = 167126852}}

}}

{{Starbox reference

| Simbad = pi.02+Dor

}}

Pi² Doradus, Latinized from π² Doradus, is a solitary star located in the southern constellation Doradus. It is faintly visible to the naked eye as a yellow-hued point of light with an apparent magnitude of 5.38. The object is located relatively close at a distance of 277 light-years based on Gaia DR3 parallax measurements, but it is receding with a heliocentric radial velocity of approximately {{val|9.1|ul=km/s}}. At its current distance, Pi² Doradus' brightness is diminished by 0.27 magnitudes due to interstellar extinction and it has an absolute magnitude of +0.78.

Pi² Doradus has a stellar classification of G8 III, indicating that it is an evolved G-type giant star. It is a red clump star that is currently on the horizontal branch—fusing helium at its stellar core. It has 1.8 times the mass of the Sun but, at the age of 1.61 billion years, it has expanded to 9.84 times the radius of the Sun. It radiates 51.1 times the luminosity of the Sun from its photosphere at an effective temperature of {{val|4919|ul=K|fmt=commas}} Pi² Doradus is metal deficient with an iron abundance of [Fe/H] = −0.26 or roughly 55% of the Sun's. Like many giant stars Pi² Doradus spins slowly, having a projected rotational velocity lower than {{val|2|ul=km/s}}.

References

{{reflist||refs=

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{{Cite simbad|title = * pi.02 Dor|access-date = September 28, 2023}}

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}}

Category:G-type giants

Category:Horizontal-branch stars