136 Tauri

{{Starbox image

| image=

{{Location mark

|image=Taurus constellation map.svg|alt=|float=center|width=260

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=136 Tauri

|x=22|y=206

}}

|caption=Location of 136 Tauri (circled)

}}

{{Starbox observe

| epoch = J2000

| constell = Taurus

| ra = {{RA|05|53|19.64606}}

| dec = {{DEC|+27|36|44.1378}}

| appmag_v = 4.56

}}

{{Starbox character

| class = A0 V {{nowrap|(A0 V + A0 V)}}

| b-v = {{Val|−0.008|0.009}}

| u-b =

| r-i =

| variable = suspected

}}

{{Starbox astrometry

| radial_v = {{Val|−17.2|4.2}}

| prop_mo_ra = +3.72

| prop_mo_dec = −10.11

| parallax = 7.71

| p_error = 0.22

| parallax_footnote =

| absmag_v = −1.00

}}

{{Starbox orbit

| reference =

| period_unitless = 5.969 d

| eccentricity = 0.00

| periastron = {{Val|2420147.25|10.0|u=JD|fmt=commas}}

| periarg = 0.00

| k1 = 48.9

| k2 = 71.0

}}

{{Starbox detail

| source =

| component1 = 136 Tau A

| mass =

| radius = 2.1

| luminosity = 197.19

| gravity =

| temperature = 8,732

| metal_fe =

| rotational_velocity = 10

| age_myr =

}}

{{Starbox catalog

| names = {{odlist | F=136 Tau | BD=+27°899 | FK5= | HD=39357 | HIP=27830 | HR=2034 | SAO=77675 }}

}}

{{Starbox reference

| Simbad = 136+Tau

}}

136 Tauri is a white-hued binary star system in the zodiac constellation of Taurus. It has a combined apparent visual magnitude of 4.56, which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of {{Val|7.71|0.22|ul=mas}} as seen from Earth's orbit, it is located approximately 420 light years from the Sun. The system is moving nearer with a heliocentric radial velocity of −17.2 km/s, and is expected to make its closest approach in 6.5 million years at a distance of {{Convert|45|pc|ly|order=flip|abbr=on}}.

This is a close, double-lined spectroscopic binary with an orbital period of 5.96 days and an eccentricity of 0.00. Tidal effects between the pair may have circularized their orbit and slowed their rotation rates – the primary has a projected rotational velocity of 10 km/s. They have a combined stellar classification of A0 V, and both are most likely A-type main-sequence stars of the same class.

References

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{{citation

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| volume=84 | page=85 | date=July 1936

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}}

Category:A-type main-sequence stars

Category:Spectroscopic binaries

Category:Taurus (constellation)

Category:Durchmusterung objects

Category:Suspected variables