2 Lyncis

{{Starbox begin

| name = 2 Lyncis

}}

{{Starbox image

| image = 300px

| caption = 2 Lyncis in optical light.

}}

{{Starbox observe

| epoch = J2000

| constell = Lynx

| ra = {{RA|06|19|37.38458}}

| dec = {{DEC|+59|00|39.4683}}

| appmag_v = 4.44

}}

{{Starbox character

| class = A2 Vs

| b-v = {{Val|0.032|0.004}}

| u-b =

| variable = Eclipsing binary

}}

{{Starbox astrometry

| radial_v = {{Val|−2.0|0.1}}

| prop_mo_ra = −5.35

| prop_mo_dec = +23.86

| parallax = 20.83

| p_error = 0.40

| parallax_footnote =

| absmag_v = 1.03

}}

{{Starbox orbit

| reference =

| period =

| period_unitless = {{Val|1306.82|0.96|u=d}}

| axis =

| axis_unitless =

| eccentricity = {{Val|0.497|0.010}}

| inclination =

| node =

| periastron = {{Val|2450962.0|2.0}}

| periarg = {{Val|186.30|0.79}}

| periarg_primary =

| k1 = {{Val|3.281|0.044}}

| k2 =

}}

{{Starbox detail

| source =

| component1 = 2 Lyn A

| mass = {{Val|2.32|0.02}}

| radius = 2.2

| luminosity = {{Val|39.5|1.8|1.7}}

| gravity = {{Val|4.1|0.1}}

| temperature = {{Val|9310|100|fmt=commas}}

| metal_fe =

| rotational_velocity = 44

| rotation = 1.56 d

| age_myr =

| component2 = 2 Lyn B

| mass2 = 0.46

}}

{{Starbox catalog

| names = {{odlist | V=UZ Lyn | F=2 Lyn | BD=+59° 959 | FK5=237 | HD=43378 | HIP=30060 | HR=2238 | SAO=25665 }}

}}

{{Starbox reference

| Simbad = 2+Lyn

}}

2 Lyncis is a binary star system in the northern constellation Lynx. It is visible to the naked eye, having an apparent visual magnitude of 4.44. The distance to this system, judging by an annual parallax shift of {{Val|20.83|0.40|ul=mas}}, is around 157 light years. It is moving closer to the Sun with a heliocentric radial velocity of −2 km/s.

This is a spectroscopic binary star system with an orbital period of around 3.6 years and an eccentricity of 0.5. It is classified as a probable (91% chance) eclipsing binary with the variable star designation UZ Lyn, showing a net magnitude decrease of 0.3 during an occultation.

The primary component is an A-type main-sequence star with a stellar classification of A2 Vs, where the 's' indicates narrow (sharp) absorption lines. The orbiting companion may be the source of the X-ray emission from this system, as stars similar to the primary component do not generally produce detectable levels of X-rays.

References

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{{citation

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}}

Category:A-type main-sequence stars

Category:Eclipsing binaries

Category:Lynx (constellation)

Lyncis, 02

Category:Durchmusterung objects