HD 19275

{{Starbox image

| image =

{{Location mark

|image=Cassiopeia constellation map.svg|alt=|float=center|width=260

|label=|position=right

|mark=Red circle.svg|mark_width=8|mark_link=HD 19275

|x=216|y=20

}}

| caption = Location of HD 19275 (circled)

}}

{{Starbox observe

| epoch = J2000.0

| constell = Cassiopeia

| ra = {{RA|03|11|56.27016}}

| dec = {{DEC|+74|23|37.1670}}

| appmag_v = 4.85

}}

{{Starbox character

| type =

| class = A2Vnn

| b-v = {{Val|+0.035|0.006}}

| u-b = +0.05

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|11.9|3.1}}

| prop_mo_ra = +13.895

| prop_mo_dec = −86.650

| parallax = 19.9554

| p_error = 0.1695

| parallax_footnote =

| absmag_v = 1.32

}}

{{Starbox detail

| mass = {{Val|1.80|0.32|0.29}}

| radius = 2.7

| luminosity = 27.27

| temperature = {{Val|8875|1000|fmt=commas}}

| metal_fe = {{Val|−0.11|0.26}}

| gravity = {{Val|4.20|0.25}}

| rotational_velocity = 250

| age_gyr = {{Val|71|317|60}}

}}

{{Starbox catalog

| names = {{odlist | BD=+73°168 | FK5=2222 | HD=19275 | HIP=14862 | HR=932 | SAO=4840 | GC=3759 | GSC=04325-01562 }}

}}

{{Starbox reference

| Simbad=HD+19275

}}

HD 19275 is a single star in the northern constellation of Cassiopeia. It has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.85. The distance to HD 19275 is 163 light years as determined using parallax measurements. It is drifting further away from the Sun with a radial velocity of around 12 km/s.

This object is an A-type main-sequence star with a stellar classification of A2Vnn. The 'nn' suffix indicates "nebulous" (broad) absorption lines in the spectrum due to rapid rotation. It is spinning with a projected rotational velocity of 250 km/s, which is giving the star an equatorial bulge that is estimated to be 15% larger than the polar radius. The object is an estimated 71 million years old with 1.8 times the mass of the Sun and about 2.7 times the Sun's radius. It is radiating 27 times the luminosity of the Sun from its photosphere at an effective temperature of 8,875 K.

References

{{reflist|refs=

{{cite simbad | title=HD 19275 | access-date=2019-12-16 |mode=cs2}}

{{citation

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| journal=The Astronomical Journal

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{{citation

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| journal=The Astrophysical Journal | postscript=.

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| bibcode=2016ApJ...826..171G | arxiv=1604.07403

| doi=10.3847/0004-637X/826/2/171 | s2cid=119241004 | doi-access=free }}

{{citation

| last1=van Belle | first1=Gerard T.

| title=Interferometric observations of rapidly rotating stars

| journal=The Astronomy and Astrophysics Review

| volume=20 | issue=1 | page=51 | date=March 2012

| doi=10.1007/s00159-012-0051-2 | bibcode=2012A&ARv..20...51V

| arxiv=1204.2572 | s2cid=119273474

| postscript=. }}

{{citation

| last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L.

| title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition -Comments and statistics

| journal=Astronomy & Astrophysics

| volume=367 | issue=2 | pages=521–24 | date=2001

| bibcode=2001A&A...367..521P | doi=10.1051/0004-6361:20000451

| arxiv=astro-ph/0012289 | s2cid=425754 | postscript=. }}

}}

Category:A-type main-sequence stars

Category:Cassiopeia (constellation)

Category:Durchmusterung objects

019275

014862

0932