HD 121504 b

{{Short description|Extrasolar planet in the constellation Centaurus}}

{{Infobox Planet

| bgcolour = #A0B0FF

| name = HD 121504 b

| discovered = August 7, 2000

| discovery_method = Radial velocity
(CORALIE)

| discovery_site = La Silla Observatory

| discoverer = Mayor et al.

| alt_names = HIP 68162 b

| semimajor = 0.33 AU
49 Gm

| apsis=astron

| aphelion = 0.34
50 Gm

| perihelion= 0.32
48 Gm

| eccentricity = 0.03 ± 0.01

| period = 63.33 ± 0.03 d
0.1734 year

| angular_dist = 7 mas

| long_periastron = 265° ± 12°

| time_periastron = 2,451,450 ± 2 JD

| semi-amplitude = 50.8 ± 0.9 m/s

| mass = >1.22 M_J
>388 M_E

|star=HD 121504}}

HD 121504 b is an exoplanet that is likely to be slightly less massive than Jupiter. Although the radial velocity method that was used to detect the planet can only measure the minimum mass of the planet, it is very unlikely that its true mass would be much higher.

HD 121504 b orbits the star at a distance of about one third of Earth's distance from the Sun, and has a slightly eccentric orbit.

References

{{Reflist|refs=

{{cite journal | title=The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE | url=http://www.aanda.org/articles/aa/full/2004/07/aa0250/aa0250.html | last1=Mayor | first1=M. | last2=Udry | first2=S. | last3=Naef | first3=D. | last4=Pepe | first4=F. | last5=Queloz | first5=D. | last6=Santos | first6=N. C. | last7=Burnet | first7=M. | display-authors=1 | journal=Astronomy and Astrophysics | volume=415 | issue=1 | pages=391–402 | year=2004 | arxiv=astro-ph/0310316 | bibcode=2004A&A...415..391M | doi=10.1051/0004-6361:20034250 | s2cid=5233877 }}

}}

External links

{{cite encyclopedia | url=https://exoplanet.eu/catalog/hd_121504_b--39/ | encyclopedia=Extrasolar Planets Encyclopaedia | title=HD 121504 b }}
{{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+121504 | title=HD 121504 | work=Exoplanets | access-date=2008-11-04 | archive-url=https://web.archive.org/web/20160303203256/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+121504 | archive-date=2016-03-03 | url-status=dead }}

Category:Exoplanets discovered in 2000

Category:Giant planets

Category:Centaurus

Category:Exoplanets detected by radial velocity