Omega Aurigae

{{Starbox begin

| name = Omega Aurigae

}}

{{Starbox observe

| epoch = J2000

| ra = {{RA|04|59|15.41038}}

| dec = {{DEC|+37|53|24.8854}}

| appmag_v = 4.95

| constell = Auriga

}}

{{Starbox character

| type = main sequence

| class = A1 V

| r-i = 0.03

| v-r =

| b-v = +0.05

| u-b = +0.01

| variable =

}}

{{Starbox astrometry

| radial_v = +5

| prop_mo_ra = +44.531

| prop_mo_dec = −97.943

| parallax = 20.1236

| p_error = 0.2385

| parallax_footnote =

| absmag_v = +1.34

}}

{{Starbox detail

| mass = {{Val|2.29|0.04}}

| radius = 2.0

| luminosity = 27

| temperature = 9,230

| metal_fe = –0.12

| gravity = 4.33

| rotational_velocity = 107

| age_myr = 317

}}

{{Starbox catalog

| names = {{odlist | B=ω Aur | F=4 Aur | BD=+37°1005 | HD=31647 | HIP=23179 | HR=1592 | SAO=57548 | WDS=J04593+3753AB }}

}}

{{Starbox reference

| Simbad = ome+Aur

}}

Omega Aurigae, Latinized from ω Aurigae, is the Bayer designation for a double star in the northern constellation of Auriga. Its apparent magnitude is 4.95, which is bright enough to be seen with the naked eye. The distance to this system, as determined using parallax measurements, is approximately {{Convert|162|ly|pc|abbr=off|lk=on}}. The system is a member of the Columba group of co-moving stars.

This is an A-type main sequence star with a stellar classification of A1 V. It is 317 million years old with a high rate of spin, showing a projected rotational velocity of 107 km/s. The star has 2.3 times the mass of the Sun and double the Sun's radius. It is radiating 27 times the Sun's luminosity from its photosphere at an effective temperature of 9,230 K. The object displays an infrared excess, suggesting an orbiting debris disk with a temperature of 20 K at a mean radius of {{Val|932.40|ul=AU}} from the host star. It has a magnitude 8.18 companion at an angular separation of 4.99 arcseconds. The system is an X-ray source with a luminosity of {{Val|16.57e29|u=ergs s⁻¹}}.

References

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}}

External links

[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%201592 HR 1592]
[http://aladin.u-strasbg.fr/AladinPreview?-c=04+59+15.4096%2B37+53+24.881&ident=*+ome+Aur&submit=Aladin+previewer Image Omega Aurigae]
[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J04593%2b3753A CCDM J04593+3753]

Category:A-type main-sequence stars

Category:Circumstellar disks

Category:Double stars