Phi2 Lupi

{{other stars by Bayer designation|Phi Lupi{{!}}φ Lupi}}

{{Starbox begin

| name = Phi² Lupi

}}

{{Starbox observe

| epoch = J2000.0

| equinox = J2000.0 (ICRS)

| constell = Lupus

| ra = {{RA|15|23|09.35005}}

| dec = {{DEC|−36|51|30.5521}}

| appmag_v = 4.535

}}

{{Starbox character

| class = B4 V

| b-v = −0.161

| u-b = −0.648

| r-i =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+0.80|2.70}}

| prop_mo_ra = −18.24

| prop_mo_dec = −20.72

| parallax = 6.28

| p_error = 0.20

| parallax_footnote =

| absmag_v = −1.47

}}

{{Starbox detail

| source =

| mass = {{Val|6.1|0.1}}

| radius = 3.4

| luminosity = 800

| temperature = 16,780

| gravity =

| metal_fe =

| rotational_velocity = {{Val|141|6}}

| age_myr = {{Val|39.9|10.1}}

}}

{{Starbox catalog

| names = φ² Lup, CD−36° 10103, FK5 1403, HD 136664, HIP 75304, HR 5712, SAO 206580.

}}

{{Starbox reference

| Simbad = phi2+Lup

}}

Phi² Lupi, Latinized from φ² Lupi, is a solitary star in the southern constellation of Lupus. With an apparent magnitude of 4.535, it is bright enough to be seen with the naked eye. Based upon an annual parallax shift of 6.28 mas as seen from Earth, it is located around 520 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of {{Val|0.052|0.013}} due to interstellar dust. It is a member of the Upper Centaurus–Lupus subgroup of the Scorpius–Centaurus association.

This is an ordinary B-type main sequence star with a stellar classification of B4 V. It has an estimated 6.1 times the mass of the Sun and about 3.4 times the Sun's radius. The star is roughly 40 million years and is spinning with a projected rotational velocity of 141 km/s. It is radiating about 800 times the solar luminosity from its photosphere at an effective temperature of 16,780 K.

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{{cite simbad

| title=phi02 Lup

| accessdate=2017-03-10 | postscript=. }}

}}

Category:B-type main-sequence stars

Category:Lupus (constellation)

Category:Durchmusterung objects

Category:Upper Centaurus Lupus