41 Sextantis

{{Starbox begin

| name = 41 Sextantis

}}

{{Starbox image

| image =

{{Location mark

| image = Sextans constellation map.svg

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

| mark = Red circle.svg | mark_width = 6 | mark_link = 41 Sextantis

| x = 122 | y = 870

}}

| caption = Location of 41 Sex on the map (circled)

}}

{{Starbox observe

| epoch = J2000.0 (ICRS)

| constell = Sextans

| ra = {{RA|10|50|18.05639}}

| dec = {{DEC|−08|53|51.9538}}

| appmag_v = 5.79{{±|0.01}}

}}

{{Starbox character

| component1 = Aa

| class = kA3 hA7V mA9

| b-v = +0.16

| u-b = +0.13

| component2 = Ab

| class2 = F/G

}}

{{Starbox astrometry

| radial_v = −4.9{{±|2.9}}

| parallax = 10.5160

| p_error = 0.0428

| parallax_footnote =

| prop_mo_ra = −5.694

| prop_mo_dec = −15.814

| pm_footnote =

| absmag_v = +0.91

}}

{{Starbox orbit

| reference =

| primary = Aa

| component = Ab

| period_unitless = {{val|6.1670|ul=days}}

| periastron = {{val|2453690.7442|0.0011|ul=JD|fmt=commas}}

| eccentricity = 0.014{{±|0.006}}

| periarg = 272{{±|4}}

| k1 = 46.67{{±|0.04}}

| k2 = 93.06{{±|0.20}}

}}

{{Starbox detail

| component1 = Aa

| mass = 2.23

| radius = 3.10{{±|0.16}}

| luminosity = 32.6{{±|1.7}}

| gravity = 3.83{{±|0.10|0.07}}

| temperature = 7,759

| metal_fe = −0.23

| rotational_velocity = 24

| age_myr = 698{{±|128|108}}

| component2 = Ab

| mass2 = 1.05

| radius2 = 1.3{{±|0.2}}

| luminosity2 = 1.8{{±|0.5}}

| rotational_velocity2 = 10

}}

{{Starbox catalog

| names = {{odlist|F = 41 Sex|Gould = 74 G. Sextantis|BD = −08°3018|CCDM = J10503-0853A|FK5 = 1281|GC = 14906|HD = 93903|HIP = 52980|HR = 4237|SAO = 137823|WDS = J10503-0854A}}

}}

{{Starbox reference

| Simbad = *41+Sex

}}

41 Sextantis (HD 93903; HR 4237; 74 G. Sextantis), or simply 41 Sex is a spectroscopic binary located in the equatorial constellation Sextans. It has an apparent magnitude of 5.79, making it faintly visible to the naked eye under ideal conditions. The system is located relatively close at a distance of 310 light-years based on Gaia DR3 parallax measurements and it is drifting closer with a heliocentric radial velocity of approximately {{val|-4.9|ul=km/s}}. At its current distance, 41 Sex's brightness is diminished by an interstellar extinction of 0.16 magnitudes and it has an absolute magnitude of +0.91.

The visible component has a stellar classification of kA3hA7VmA9, indicating that it is an Am star with the calcium K-lines of an A3 star, the hydrogen lines and effective temperature of an A7 main-sequence star, and the metal lines of an A9 star. Houk & Swift (1999) give a class of A2/3 III, indicating that it is an A-type star that has the characteristics of an A2 and A3 giant star. It has 2.23 times the mass of the Sun and a slightly enlarged radius 3.10 times that of the Sun. It radiates 32.6 times the luminosity of the Sun from its photosphere at an effective temperature of {{val|7759|ul=K|fmt=commas}}, giving it a white-hue when viewed in the night sky. 41 Sextantis Aa is metal-deficient with an iron abundance 58.9% that of the Sun and it spins modestly with a projected rotational velocity of {{val|24|ul=km/s}}.

The companion's spectrum is very weak compared to the primary, but it is said to be either a late F-type star or an early G-type star. It has 105% the mass of the Sun and 1.3 times the radius of the Sun. It radiates 1.8 times the luminosity of the Sun from its photosphere. It spins slowly with a projected rotational velocity of 10 km/s.

References

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}}

Category:A-type main-sequence stars

Category:Am stars

Category:Spectroscopic binaries

Category:Double stars