38 Lyncis

{{Starbox image

| image =

{{Location mark

|image=Lynx constellation map.svg|alt=|float=center|width=240

|label=|position=right

|mark=Red circle.svg|mark_width=10|mark_link=38 Lyncis

|x=127|y=747

}}

| caption = Location of 38 Lyncis (circled in red)

}}

{{Starbox observe

| epoch = J2000

| ra = {{RA|09|18|50.64384}}

| dec = {{DEC|+36|48|09.3331}}

| appmag_v = 3.82 {{nowrap|(3.95 + ? + 6.30)}}

| constell = Lynx

}}

{{Starbox character

| class = A3V {{nowrap|(A1V + A4V)}}

| b-v = {{Val|0.066|0.010}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|4.0|2.7}}

| absmag_v = +0.98

}}

{{Starbox astrometry|no_heading=y

| component1 = A

| prop_mo_ra = –36.288

| prop_mo_dec = −121.767

| parallax = 27.8044

| p_error = 0.7879

| parallax_footnote =

| component2 = B

| prop_mo_ra2 = –26.513

| prop_mo_dec2 = −127.261

| parallax2 = 24.4730

| p_error2 = 0.1240

| parallax_footnote2 =

}}

{{Starbox detail

| component1 = 38 Lyn A

| mass = 1.90

| radius = 3.07

| luminosity = 32

| gravity = 3.86

| temperature = {{Val|8862|301|fmt=commas}}

| metal_fe = {{val|-0.36}}

| rotational_velocity = 163

| rotation =

| age_myr = 213

| component2 = 38 Lyn B

| mass2 = 1.30/0.90

| radius2 = 2.55

| temperature2 = 5,409

| luminosity2 = 5

}}

{{Starbox catalog

| names = {{odlist | F=38 Lyn | BD=+37°1965 | FK5=346 | HD=80081 | HIP=45688 | HR=3690 | SAO=61391 | WDS=J09188+3648 }}

}}

{{Starbox reference

| Simbad=38+Lyn

| Simbad2=38+Lyn+A|sn2=A

| Simbad3=38+Lyn+B|sn3=B

}}

38 Lyncis is a multiple star system in the northern constellation of Lynx. It located about 125 light-years from the Sun, based on parallax.

When viewed through a moderate telescope, two components—a brighter blue-white star of magnitude 3.9 and a fainter star of magnitude 6.1 that has been described as lilac as well as blue-white—can be seen. The pair have an angular separation of {{Val|2.6|ul=arcsecond}} and an estimated period of {{val|429|ul=years}}. The fainter component is itself a close binary which can only be resolved using speckle interferometry. The two were separated by {{Val|0.06|u=arcsecond}} in 1993 and {{val|0.237|u="}} in 2008, and have an estimated orbital period of {{val|2.1|u=years}}. A further faint star, component E {{val|100|ul="}} away, is a proper-motion companion. Two other faint companions listed in multiple star catalogues as components C and D are unrelated background objects.

38 Lyncis was given as a standard star for the spectral class of A3 V when the Morgan-Keenan classification system was first defined in 1943, apparently for the two components combined.

The primary star, component A, is a class A main sequence star around twice the mass of the sun. An effective temperature of {{val|8,862|fmt=commas|ul=K}} and a radius of {{solar radius|3.09|link=y}} mean that it is over thirty times more luminous than the sun. It has been listed as a λ Boötis star, although it is no longer considered to be a member. The fainter of the pair, component B, has been given a spectral class of A4V, although it consists of two very close stars. Their properties are poorly-known, even the difference in their apparent magnitudes can only be estimated to be approximately 2. Based on this, their masses are estimated to be {{solar mass|1.3|link=y}} and {{solar mass|0.9}} respectively. Component E is a 15th magnitude star with an approximate spectral type of M2, a red dwarf, and an estimated mass of {{solar mass|0.31}}, and a temperature of {{val|3,816|fmt=commas|u=K}}.

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