HIP 70849 b

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

{{Infobox planet

| name = HIP 70849 b

| discoverer = Segransan et al.

| discovery_site = La Silla Observatory

| discovered = October 19, 2009

| discovery_method = radial velocity (HARPS)

| orbit_ref =

| apsis = astron

| semimajor = {{val|3.99|0.06|0.07|ul=AU}}

| eccentricity = {{val|0.65|0.02|0.01}}

| period = {{convert|3649|±|18|d|yr|lk=on}}

| inclination = {{val|96|16|u=deg}}

| asc_node = {{val|35|6|u=deg}}

| arg_peri = {{val|182|1|u=deg}}

| star = HIP 70849

| physical_ref =

| mass = {{val|4.5|0.4|0.3|ul=Jupiter mass}}

}}

HIP 70849 b is an extrasolar planet which orbits the K-type main sequence star HIP 70849, located approximately 79 light years away in the constellation Lupus. This planet was detected by HARPS and announced on October 19, 2009, together with 31 other planets. Its parameters were initially poorly constrained, estimated to have a minimum mass of {{Jupiter mass|3-15|link=y}} and take anywhere from 5-90 years to orbit the star at a semimajor axis of 4.5-36 AU, with the eccentricity and inclination being unknown. This was significantly updated in a December 2022 paper, which found much better constrained parameters including a high eccentricity, and in a January 2023 paper which determined the planet's inclination and true mass via astrometry.

References

{{Reflist|refs=

{{cite web |url=https://www.eso.org/public/news/eso0939/ |title=32 New Exoplanets Found |date=19 October 2009 |publisher=ESO |access-date=4 January 2023}}

{{cite journal | title=The HARPS search for southern extra-solar planets. XXIX. Four new planets in orbit around the moderately active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849 | url=http://www.aanda.org/articles/aa/full_html/2011/11/aa13580-09/aa13580-09.html | last1=Ségransan | first1=D. | last2=Mayor | first2=M. | last3=Udry | first3=S. | last4=Lovis | first4=C. | last5=Benz | first5=W. | last6=Bouchy | first6=F. | last7=Lo Curto | first7=G. | last8=Mordasini | first8=C. | last9=Moutou | first9=C. | last10=Naef | first10=D. | last11=Pepe | first11=F. | last12=Queloz | first12=D. | last13=Santos | first13=N. | display-authors=1 | journal=Astronomy and Astrophysics | volume=535 | at=A54 | date=2011 | arxiv=1107.0339 | bibcode=2011A&A...535A..54S | doi=10.1051/0004-6361/200913580 | s2cid=119197766 }}

{{cite journal |last1=Šubjak |first1=J. |last2=Lodieu |first2=N. |display-authors=etal |title=Search for planets around stars with wide brown dwarfs |journal=Astronomy & Astrophysics |year=2023 |volume= 671|issue= |pages= A10|doi= 10.1051/0004-6361/202244238|arxiv=2212.03757|bibcode=2023A&A...671A..10S |s2cid=254366726 }}

{{cite journal |last1=Philipot |first1=F. |last2=Lagrange |first2=A.-M. |display-authors=etal |arxiv=2301.01263 |title=Updated characterization of long-period single companion by combining radial velocity, relative astrometry, and absolute astrometry |journal=Astronomy & Astrophysics |date=January 2023|volume=670 |pages=A65 |doi=10.1051/0004-6361/202245396 |bibcode=2023A&A...670A..65P |s2cid=255393653 }}

}}

Category:Exoplanets discovered in 2009

Category:Exoplanets detected by radial velocity

Category:Exoplanets detected by astrometry

Category:Giant planets

Category:Lupus (constellation)