23 Orionis

{{Starbox observe

| epoch = J2000

| constell = Orion

| ra = {{RA|05|22|50.00474}}

| dec = {{DEC|+03|32|39.9770}}

| appmag_v = 4.99 {{nowrap|(4.95 + 6.76)}}

}}

{{Starbox character

| type = main sequence

| class = {{nowrap|B1V + B3V}}

| b-v = {{Val|−0.096|0.004}}

| u-b =

| variable =

}}

{{Starbox astrometry

| absmag_v = −2.93

}}

{{Starbox astrometry|no_heading=y

| component1 = 23 Ori A

| radial_v = {{Val|+18.0|3.7}}

| prop_mo_ra = −2.414

| prop_mo_dec = +1.230

| parallax = 2.7199

| p_error = 0.3155

| parallax_footnote =

| component2 = 23 Ori B

| radial_v2 = 28

| prop_mo_ra2 = +1.275

| prop_mo_dec2 = −0.552

| parallax2 = 2.5579

| p_error2 = 0.0864

| parallax_footnote2 =

}}

{{Starbox detail

| component1 = 23 Ori A

| mass = {{Val|12.5|0.6}}

| radius = 6.97

| temperature = 25,400

| luminosity = 26,546

| gravity = {{Val|4.078|0.045}}

| rotational_velocity = 350

| age_myr = {{Val|15.4|0.6}}

| component2 = 23 Ori B

| mass2 = {{Val|6.6|0.1}}

| radius2 = 4.71

| temperature2 = 18,700

| luminosity2 = 1,620

| rotational_velocity2 = 370

| age_myr2 = {{Val|22.8|2.3}}

}}

{{Starbox catalog

| names = {{odlist | F=23 Ori | SAO=112697 | WDS=J05228+0333 }}

| component1 = A

| names1 = {{odlist | BD=+03°871 | HD=35149 | HIP=25142 | HR=1770 | SAO=112697 }}

| component2 = B

| names2 = {{odlist | BD=+03°872 | HD=35148 | HIP=25145 | SAO=112699 }}

}}

{{Starbox reference

| Simbad = 23+Ori

| Simbad2 = HD+35148|sn2=B

}}

23 Orionis is a double star located around {{convert|1200|ly|pc|lk=on|abbr=off}} away from the Sun in the equatorial constellation of Orion. It is visible to the naked eye as a dim, blue-white-hued point of light with a combined apparent visual magnitude of 4.99. The pair are moving away from the Earth with a heliocentric radial velocity of +18 km/s, and they are members of the Orion OB1 association, subgroup 1a.

Howe and Clarke (2009) catalog this as a double-lined spectroscopic binary star system with a wide projected separation of {{Val|9460|ul=AU|fmt=commas}}. As of 2018, they had an angular separation of {{Val|31.9|ul=arcsecond}} along a position angle of 30°. The brighter member, component A, is a B-type main-sequence star with a stellar classification of B1V. The secondary, component B, is of class B3V. Both stars are spinning rapidly.

References

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Category:B-type main-sequence stars

Category:Double stars

Category:Orion (constellation)