Eta Octantis

{{Starbox begin

| name = η Octantis

}}

{{Starbox image

| image ={{Location mark

| image=Octans IAU.svg | alt= | float=center | width=250

| label= | position=center

| mark=Red circle.svg | mark_width=8 | mark_link=Eta Octantis

| x = 257 | y = 567

}}

| caption = Location of η Octantis (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Octans

| ra = {{RA|10|59|13.7578}}

| dec = {{DEC|-84|35|38.018}}

| appmag_v = 6.18{{±|0.01}}

}}

{{Starbox character

| type = main sequence

| class = A1 Va

| u-b = +0.12

| b-v = +0.11

}}

{{Starbox astrometry

| radial_v = −1.7{{±|0.6}}

| prop_mo_ra = −65.747

| prop_mo_dec = −8.273

| pm_footnote =

| parallax = 9.1133

| p_error = 0.02

| parallax_footnote =

| absmag_v = +1.08

}}

{{Starbox detail

| mass = {{val|2.37|0.03}}

| luminosity = {{val|45.3|3.1|3.0}}

| temperature = 9,500

| rotational_velocity = 152{{±|13}}

| age_myr = 547

| radius = 2.6{{±|0.1}}

| gravity = 4.1

| metal_fe = −0.01

}}

{{Starbox catalog

| names = {{odlist|B = η Oct|HD = 96124|HIP = 53702|CPD = −83°386|HR = 4312|SAO = 258600|FK5 = 1664|GC = 15164|Gould = 11 G. Octantis}}

}}

{{Starbox reference

| Simbad = eta+Oct

}}

Eta Octantis, Latinized from η Octantis, is a solitary star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 6.19, making it faintly visible to the naked eye. The object is situated at a distance of 358 light years but is approaching the Solar System with a heliocentric radial velocity of {{val|-1.7|ul=km/s}}.

Eta Octantis has a stellar classification of A1 Va, indicating that it is an ordinary A-type main sequence star. At present it has 2.37 times the Sun's mass and 2.6 times the Sun's radius. It shines with a luminosity of {{val|45|ul=solar luminosity}} from its photosphere at an effective temperature of 9,500 K, giving a white hue. Eta Octantis is a rapidly rotating star, with a projected rotational velocity of {{val|152|ul=km/s}}, and is estimated to be 547 million years old, having completed 72% of its main sequence lifetime.

References

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}}

Category:Octans

Category:A-type main-sequence stars