60 Cancri

{{Short description|Orange-hued giant star in the constellation Cancer}}

{{Starbox begin

| name = 60 Cancri

}}

{{Starbox observe

| epoch = J2000.0

| constell = Cancer

| ra = {{RA|08|55|55.54693}}

| dec = {{DEC|+11|37|33.6990}}

| appmag_v = +5.44

}}

{{Starbox character

| type = giant

| class = K5 III

| b-v = {{Val|1.462|0.004}}

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|+25.38|0.16}}

| prop_mo_ra = −15.443

| prop_mo_dec = −13.539

| parallax = 3.8596

| p_error = 0.1340

| parallax_footnote =

| absmag_v =

}}

{{Starbox detail

| source =

| mass = {{Val|1.42|0.45}}

| radius = 54

| luminosity = 669.87

| temperature = {{Val|4150|92|fmt=commas}}

| gravity = {{Val|1.28|0.11}}

| metal_fe = {{Val|−0.01|0.05}}

| rotational_velocity =

| age_gyr = {{Val|1.15|0.67|0.43}}

}}

{{Starbox catalog

| names = {{odlist | F=60 Cnc | BD=+12°1941 | HD=76351 | HIP=43851 | HR=3550 | SAO=98235 | GC=12339 | NSV=4308 }}

}}

{{Starbox reference

| Simbad = 60+Cnc

}}

60 Cancri is a star in the zodiac constellation Cancer, located about 850 light years away from the Sun. It is visible to the naked eye as a faint, orange-hued star with an apparent visual magnitude of +5.44. 60 Cancri is situated near the ecliptic, so it is subject to the occasional occultation by the Moon. It is moving away from the Earth with a heliocentric radial velocity of +25 km/s.

This is an aging giant star with a stellar classification of K5 III, indicating it has exhausted the hydrogen at its core and evolved off the main sequence. It is a suspected variable star of unknown type. The interferometry-measured angular diameter of the primary component, after correcting for limb darkening, is {{Val|1.94|0.02|ul=mas}}, which, at its estimated distance, equates to a physical radius of about 54 times the radius of the Sun. It is around 1.15 billion years old with 1.4 times the mass of the Sun. The star is radiating 670 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,150 K.

References

{{Reflist|refs=

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| s2cid=119257644 | postscript=. }}

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{{citation

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| url=https://books.google.com/books?id=OvTjLcQ4MCQC&pg=PA41

}} The radius (R_*) is given by:

: $\begin{align} 2\cdot R_*
& = \frac{(10^{-3}\cdot 259.1\cdot 1.94)\ \text{AU}}{0.0046491\ \text{AU}/R_{\bigodot}} \\
& \approx 108\cdot R_{\bigodot}
\end{align}$

{{citation

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| journal=Astronomical Journal | postscript=.

| volume=94 | page=751 | date=September 1987

| doi=10.1086/114513 | bibcode=1987AJ.....94..751W }}

{{citation

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| last4=Kireeva | first4=N. N. | last5=Pastukhova | first5=E. N.

| title=General Catalogue of Variable Stars

| version=5.1 | journal=Astronomy Reports