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HD 48265

{{Short description|Star in the constellation Puppis}}

{{Starbox begin

| name = HD 48265 / Nosaxa

}}

{{Starbox observe

| epoch = J2000

| constell = Puppis

| ra = {{RA|06|40|01.7270}}

| dec = {{DEC|−48|32|31.042}}

| appmag_v = 8.07

}}

{{Starbox character

| class=G5IV/V

| appmag_1_passband = B

| appmag_1 = ~8.80

| appmag_2_passband = J

| appmag_2 = {{nowrap|6.842 ± 0.021}}

| appmag_3_passband = H

| appmag_3 = {{nowrap|6.529 ± 0.061}}

| appmag_4_passband = K

| appmag_4 = {{nowrap|6.449 ± 0.020}}

| r-i =

| v-r =

| b-v =

| u-b =

| variable =

}}

{{Starbox astrometry

| radial_v = {{nowrap|22.5 ± 0.2}}

| prop_mo_ra = {{val|26.524|0.089}}

| prop_mo_dec = {{val|29.689|0.095}}

| parallax = 11.14

| p_error = 0.21

| parallax_footnote =

| absmag_v = 3.34

}}

{{Starbox detail

| mass = 0.93

| radius = {{nowrap|2.34 ± 0.26}}

| luminosity = {{nowrap|0.623 ± 0.058}}

| temperature = 5,508

| metal_fe = {{nowrap|0.29 ± 0.05}}

| gravity =

| age_gyr = 4.8

| rotational_velocity = 3.0

}}

{{Starbox catalog

| names = Nosaxa, CD–48 2430, HD 48265, HIP 31895, SAO 218115.

}}

{{Starbox reference

| Simbad = HD+48265

| EPE = HD+48265

| NSTED = HD+48265

}}

{{Starbox end}}

HD 48265 is the Henry Draper Catalogue designation for a star in the southern constellation Puppis. It has an apparent visual magnitude of 8.07, which makes it too faint to be seen with the naked eye. Based upon parallax measurements made during the Hipparcos mission, it is located at a distance of roughly {{Convert|293|ly|pc|abbr=off|lk=on}} from Earth.

This star has a stellar classification of G5IV/V, suggesting that, at an age of 4.8 billion years, it has reached an intermediate evolutionary stage between a main sequence star and a subgiant. It has but 93% of the mass of the Sun, while its outer atmosphere has begun to expand, reaching about 2.3 times the Sun's radius. HD 48265 is radiating 62% of the Sun's luminosity from its atmosphere at an effective temperature of 5,508 K, giving it the yellowish glow of a G-type star. Measurement of the chemical abundances of this star indicate that, compared to the Sun, it has a 95% greater proportion of elements other than hydrogen and helium—what astronomers term the star's metallicity.

Planetary system

In October 2008 the planet, HD 48265 b, was reported to be orbiting this star. This object was detected using the radial velocity method during an astronomical survey conducted by the Magellan Planet Search Program using the MIKE echelle spectrograph on the 6.5-m Magellan II (Clay) telescope.

{{OrbitboxPlanet begin

| table_ref =

}}

{{OrbitboxPlanet

| exoplanet = b / Naqaỹa

| mass = {{val|1.47|0.12|p=≥}}

| semimajor = {{val|1.81|0.07}}

| period = {{val|780.3|4.6}}

| eccentricity = {{val|0.08|0.05}}

}}

{{Orbitbox end}}

As part of the NameExoWorlds project of the IAU, HD 48265 b has been named Naqaỹa ("brother") and HD 48265 Nosaxa ("springtime") in the Moqoit language, as voted by Argentine voters in an online poll.

See also

References

{{Reflist|refs=

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{{citation | title=HD 48265 | work=NASA Exoplanet Archive | publisher=NASA | url=http://exoplanetarchive.ipac.caltech.edu/cgi-bin/Sieve/nph-sieve?mission=NStED&objectSearch&objstr=HD+48265 | access-date=2012-03-15 }}{{Dead link|date=January 2020 |bot=InternetArchiveBot |fix-attempted=yes }}

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{{citation | title=New planetary systems from the Calan–Hertfordshire Extrasolar Planet Search | last1=Jenkins | first1=J. S. | last2=Jones | first2=H. R. A. | last3=Tuomi | first3=M. | last4=Díaz | first4=M. | last5=Cordero | first5=J. P. | last6=Aguayo | first6=A. | last7=Pantoja | first7=B. | last8=Arriagada | first8=P. | last9=Mahu | first9=R. | last10=Brahm | first10=R. | last11=Rojo | first11=P. | last12=Soto | first12=M. G. | last13=Ivanyuk | first13=O. | last14=Becerra Yoma | first14=N. | last15=Day-Jones | first15=A. C. | last16=Ruiz | first16=M. T. | last17=Pavlenko | first17=Y. V. | last18=Barnes | first18=J. R. | last19=Murgas | first19=F. | last20=Pinfield | first20=D. J. | last21=Jones | first21=M. I. | last22=López-Morales | first22=M. | last23=Shectman | first23=S. | last24=Butler | first24=R. P. | last25=Minniti | first25=D | display-authors=1 | journal=Monthly Notices of the Royal Astronomical Society | volume=466 | pages=443–473 | year=2017 | issue=1 | arxiv=1603.09391 | bibcode=2017MNRAS.466..443J | doi=10.1093/mnras/stw2811 | doi-access=free | s2cid=18016219 }}

{{cite simbad | title=HD 48265 | accessdate=2012-03-15 }}

}}

External links

  • {{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+48265 | title=HD 48265 | work=Exoplanets | access-date=2009-06-10 | archive-url=https://web.archive.org/web/20160303181244/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+48265 | archive-date=2016-03-03 | url-status=dead }}

{{Sky|06|40|01.727|-|48|32|31.04|285}}

{{Stars of Puppis}}

{{DEFAULTSORT:HD 48265}}

048265

031895

Category:Puppis

Category:Planetary systems with one confirmed planet

Category:G-type subgiants

Category:Durchmusterung objects

Nosaxa