16 Comae Berenices

{{Short description|Star in the constellation Coma Berenices}}

{{Starbox begin

| name = 16 Comae Berenices

}}

{{Starbox observe

| epoch = J2000

| ra = {{RA|12|26|59.29615}}

| dec = {{DEC|+26|49|32.5273}}

| appmag_v = 4.96

| constell = Coma Berenices

}}

{{Starbox character

| type = main sequence

| class = A4 V

| b-v =

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+0.40|0.70}}

| prop_mo_ra = −11.456

| prop_mo_dec = −9.220

| parallax = 11.6745

| p_error = 0.2116

| parallax_footnote =

| absmag_v =

}}

{{Starbox detail

| source =

| mass = {{Val|2.54|0.03}}

| radius = 3.71

| luminosity = {{Val|68.6|3.5|3.3}}

| temperature = {{Val|8299|57|58|fmt=commas}}

| gravity = 3.67

| metal_fe = −0.3

| rotational_velocity = 80

| age_myr = 310

}}

{{Starbox catalog

| names = {{odlist | F=16 Com | BD=+27°2134 | FK5=2997 | HD=108382 | HIP=60746 | HR=4738 | SAO=82314 }}

}}

{{Starbox reference

| Simbad=16+Com

}}

{{Starbox end}}

16 Comae Berenices is a single star in the northern constellation of Coma Berenices. 16 Comae Berenices is the Flamsteed designation. It is a member of the Coma Star Cluster and is visible to the naked eye with an apparent visual magnitude of 4.96. Based upon an annual parallax shift of {{Val|11.7|ul=mas}}, it is located about 279 light years away.

This is a chemically-peculiar A-type main-sequence star with a stellar classification of A4 V. It displays an infrared excess, suggesting the presence of an orbiting debris disk at a mean distance of {{Val|18.2|ul=AU}} with a temperature of {{Val|180|u=K}}. 16 Com has 2.54 times the mass of the Sun and 3.71 times the Sun's radius. The star is 310 million years old with a projected rotational velocity of 80 km/s. It is radiating 67 times the Sun's luminosity from its photosphere at an effective temperature of 8,299 K.

References

{{reflist|refs=

{{cite simbad | title=16 Com | access-date=2019-01-05 }}

{{Cite Gaia DR2|4008867605880031872}}

{{citation

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| journal=Monthly Notices of the Royal Astronomical Society

| volume=389 | issue=2 | pages=869–879 | date=September 2008

| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E

| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}

{{citation

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| journal=Astronomy and Astrophysics

| volume=479 | issue=1 | date=February 2008 | pages=189–206

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| bibcode=2008A&A...479..189G | arxiv=0712.0244 | s2cid=118369727 }}

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| journal=Astronomy & Astrophysics

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{{citation

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| title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities

| display-authors=1 | journal=Astronomy and Astrophysics

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| arxiv=1201.2052 | bibcode=2012A&A...537A.120Z

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{{citation

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| journal=The Astrophysical Journal Supplement Series

| volume=225 | issue=1 | id=15 | pages=24 | date=July 2016

| doi=10.3847/0067-0049/225/1/15 | bibcode=2016ApJS..225...15C

| arxiv=1606.01134 | s2cid=118438871 | postscript=. | doi-access=free }}

{{citation

| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A.

| title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets

| journal=The Astrophysical Journal

| volume=804 | issue=2 | pages=146 | year=2015

| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146

| arxiv=1501.03154 | s2cid=33401607 | postscript=. }}

{{citation

| last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C.

| title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project

| journal=Astronomy & Astrophysics

| volume=546 | id=A61 | pages=14 | date=October 2012

| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D

| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}

}}

{{Stars of Coma Berenices}}

{{DEFAULTSORT:16 Comae Berenices}}

Category:A-type main-sequence stars

Category:Circumstellar disks

Category:Coma Berenices

Comae Berenices, 16

Category:Durchmusterung objects

108382

060746

4738