10 Delphini

{{Starbox begin

| name = 10 Delphini

}}

{{Starbox observe

| epoch = J2000.0 (ICRS)

| constell = Delphinus

| ra = {{RA|20|41|16.2079}}

| dec = {{DEC|+14|34|58.3606}}

| appmag_v = 6.00{{±|0.01}}

}}

{{Starbox character

| class = K4 III

| b-v = +1.24

| u-b = +1.44

}}

{{Starbox astrometry

| radial_v = −32{{±|2}}

| parallax = 6.6178

| p_error = 0.0397

| parallax_footnote =

| prop_mo_ra = −9.462

| prop_mo_dec = −0.344

| pm_footnote =

| absmag_v = +0.06

}}

{{Starbox detail

| mass = 2.42{{±|0.71}}

| radius = 18.47{{±|1.02|1.03}}

| luminosity = 125{{±|2}}

| gravity = 2.27

| metal_fe = 0.00

| temperature = 4,378

| rotational_velocity =

| age_myr = 794{{±|33}}

}}

{{Starbox catalog

| names = {{odlist|F = 10 Del|HD = 197121|HIP = 102080|HR = 7918|GC = 28826|AG = +14°2269|BD = +14°4393|SAO = 106384}}

}}

{{Starbox reference

| Simbad = 10+Del

}}

10 Delphini (10 Del) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 6.00, allowing it to be faintly seen with the naked eye. Parallax measurements put the object at a distance of 493 light years but is drifting closer with a heliocentric radial velocity of {{val|-32|ul=km/s}}.

10 Delphini has a stellar classification of K4 III or K2 III, both indicating that it is a red giant. However, there is some uncertainty behind the first classification. It has twice the mass of the Sun but at an age of 794 million years — expanded to 18 times the radius of the Sun. It shines at {{val|125|ul=solar luminosity}} from its enlarged photosphere at an effective temperature of 4,378 K, giving it an orange glow. 10 Del has a solar metallicity.

10 Del has been suspected to be a variable star, although it hasn't been catalogued as such in the GCVS.

References

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}}

Category:Delphinus

Category:K-type giants