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HD 330075

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

{{Starbox begin}}

{{Starbox observe

| epoch = J2000.0

| constell = Norma

| ra = {{RA|15|49|37.69382}}

| dec = {{DEC|–49|57|48.6771}}

| appmag_v = 9.36

}}

{{Starbox character

| type =

| class = G5

| b-v = {{Val|0.935|0.005}}

| variable =

}}

{{Starbox astrometry

| radial_v = {{Val|61.67|0.24}}

| prop_mo_ra = -232.760

| prop_mo_dec = -92.540

| parallax = 22.0467

| p_error = 0.0443

| parallax_footnote =

| absmag_v = 5.89

}}

{{Starbox detail

| mass = {{Val|0.86|0.02}}

| radius = {{Val|0.85|0.02|0.03}}

| gravity = {{Val|4.68|0.09}}

| temperature = {{Val|4967|88|65|fmt=commas}}

| luminosity = {{Val|0.393|0.001}}

| metal_fe = {{Val|0.18|0.04}}

| age_gyr = {{Val|5.30|4.22}}

| rotational velocity = 0.7

}}

{{Starbox catalog

| names = {{odlist | CD=-49°10033 | HD=330075 | HIP=77517 | SAO=226248 | LTT=6312 | PPM=321068 | NLTT=41237|2MASS=J15493770-4957486|Gaia DR2=5982775854377691136}}

}}

{{Starbox reference

| Simbad = HD+330075

| EPE = HD+330075

}}

{{Starbox end}}

HD 330075 is a star in the southern constellation of Norma. It has a yellow hue and an apparent visual magnitude of 9.36, which makes it too faint to be seen with the naked eye – it is visible only with telescope or powerful binoculars. Parallax measurements provide a distance estimate of 148 light years from the Sun, and it is drifting further away with a radial velocity of 62 km/s. The star is estimated to have come as close as {{Convert|34.20|pc|ly|disp=out|abbr=off}} some 409 million years ago.

This object appears to be a slightly evolved dwarf with a spectral class of G5. That is, it is nearing the end of its main sequence lifetimes and is becoming a subgiant star. The star has very low chromospheric activity and is around five billion years old. It is smaller than the Sun with 86% of the Sun's mass and 85% of the solar radius. As a consequence, it is radiating just 39% of the luminosity of the Sun from its photosphere at an effective temperature of 4,967 K. It has a super-solar metallicity, which means the abundance of elements other than hydrogen and helium appears much higher than in the Sun.

Planetary system

In 2004, the discovery of a hot Jupiter planet orbiting close to the star was announced. This is the first planet discovered by the then-new HARPS spectrograph.

{{OrbitboxPlanet begin}}

{{OrbitboxPlanet

| exoplanet = b

| mass = ≥ 0.76

| period = {{Val|3.369|0.004}}

| semimajor = 0.043

| eccentricity = 0

}}

{{Orbitbox end}}

See also

References

{{Reflist|refs=

{{cite simbad | title=HD 330075 | accessdate=2019-11-18}}

{{Cite Gaia DR2|5982775854377691136}}

{{cite journal

| title=XHIP: An extended hipparcos compilation

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | arxiv=1108.4971

| doi=10.1134/S1063773712050015 | s2cid=119257644 }}

{{cite journal

| title=Chemical fingerprints of hot Jupiter planet formation

| display-authors=1 | last1=Maldonado | first1=J.

| last2=Villaver | first2=E. | last3=Eiroa | first3=C.

| journal=Astronomy & Astrophysics

| volume=612 | id=A93 | pages=18 | date=May 2018

| arxiv=1712.01035 | bibcode=2018A&A...612A..93M

| doi=10.1051/0004-6361/201732001 | s2cid=119458710 }}

{{cite journal

| url=http://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/full/2004/31/aa0389-04/aa0389-04.html

| title=The HARPS search for southern extra-solar planets I. HD 330075 b: A new "hot Jupiter"

| last1=Pepe | first1=F. | last2=Mayor | first2=M.

| last3=Queloz | first3=D. | last4=Benz | first4=W.

| last5=Bonfils | first5=X. | last6=Bouchy | first6=F.

| last7=Lo Curto | first7=G. | last8=Lovis | first8=C.

| last9=Mégevand | first9=D. | display-authors=1

| journal=Astronomy and Astrophysics

| volume=423 | issue=1 | pages=385–389 | year=2004

| arxiv=astro-ph/0405252 | bibcode=2004A&A...423..385P

| doi=10.1051/0004-6361:20040389 | s2cid=59157984

}}

}}

External links

  • {{cite web

| url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+330075

| title=HD 330075

| work=Exoplanets

| accessdate=2009-05-22

| archive-url=https://web.archive.org/web/20091125000631/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+330075

| archive-date=2009-11-25

| url-status=dead

}}

{{Sky|15|49|37.6913|-|49|57|48.692|163.7}}

{{Stars of Norma}}

Category:G-type main-sequence stars

Category:Planetary systems with one confirmed planet

Category:Norma (constellation)

CD-49 10033

330075

077517

J15493770-4957486