Wolf 1069

{{Starbox image

| image = 240px

| caption = SDSS image of Wolf 1069

}}

{{Starbox observe

| epoch = J2000

| constell = Cygnus{{cite web |url=http://djm.cc/constellation.html |title=Finding the constellation which contains given sky coordinates |date=2 August 2008 |website=djm.cc}}

| ra = {{RA|20|26|05.30213}}

| dec = {{DEC|+58|34|22.6804}}

| appmag_v = 14.2

}}

{{Starbox character

| type = Main sequence

| class = M5.0V

| appmag_1_passband = G

| appmag_1 = {{val|12.352|0.003}}

| appmag_2_passband = J

| appmag_2 = {{val|9.029|0.039}}

| appmag_3_passband = H

| appmag_3 = {{val|8.483|0.073}}

| appmag_4_passband = K

| appmag_4 = {{val|8.095|0.021}}

}}

{{Starbox astrometry

| radial_v = {{val|-60.26|0.54}}

| prop_mo_ra = {{val|261.038}}

| prop_mo_dec = {{val|542.906}}

| pm_footnote =

| parallax = 104.4415

| p_error = 0.0261

| parallax_footnote =

| absmag_v = 14.3

| absmag_bol =

}}

{{Starbox detail

| source =

| mass = {{val|0.167|0.011}}

| radius = {{val|0.1813|0.0063}}

| luminosity_bolometric = {{val|0.002944|0.000028}}

| habitable_inner = {{val|0.056|ul=AU}}

| habitable_outer = {{val|0.111|ul=AU}}

| gravity = {{val|4.93|0.06}}

| temperature = {{val|3158|54}}

| metal_fe = {{val|0.07|0.19}}

| rotation = {{Val|156.30|8.69}} days

| rotational_velocity = <2

| age_gyr =

}}

{{Starbox catalog

| names = {{odlist | 2MASS = J20260528+5834224 | Ci 20 = 1209 | G = 230-40 | GJ = 1253 | LFT = 1550 | LHS = 3549 | LSPM = J2026+5834 | LTT = 15977 | NLTT = 49289 | PLX = 4870.01 | PM = J20260+5834 | TIC = 352617553 | Wolf = 1069}}

}}

{{Starbox reference

| Simbad = Wolf+1069

| NSTED = Wolf-1069

}}

Wolf 1069 is a red dwarf star located {{convert|31.2|ly|pc|lk=on|abbr=off}} away from the Solar System in the constellation of Cygnus. The star has 17% the mass and 18% the radius of the Sun, a temperature of {{convert|3158|K|C F|lk=on}}, and a slow rotation period of 150–170 days. It hosts one known exoplanet called Wolf 1069 b which could possibly sustain life.

Planetary system

A planetary companion to Wolf 1069 was discovered in 2023 via radial velocity. It has a minimum mass close to that of Earth and orbits within the habitable zone of its star, with an orbital period of 15 days. This planet does not transit its host star. Observations have ruled out any additional planets greater than one Earth mass with orbital periods of less than 10 days.

As of its discovery, Wolf 1069 b is the sixth-closest known Earth-mass planet within the conservatively-defined habitable zone, after Proxima Centauri b, GJ 1061 d, Teegarden's Star c, and GJ 1002 b & c.

{{Orbitbox planet begin

| name = Wolf 1069

| table_ref =

}}

{{Orbitbox planet

| exoplanet = b

| mass_earth = {{val|1.26|0.21|p=≥}}

| radius_earth = ~1.08The radius of this planet has not been measured; this value is an estimate.

| semimajor = {{val|0.0672|0.0014}}

| period = {{val|15.564|0.015}}

| eccentricity =

| inclination =

}}

Notes

References

{{reflist|refs=

{{cite journal |last1=Kossakowski |first1=D. |last2=Kürster |first2=M. |display-authors=etal |date=January 2023 |title=The CARMENES search for exoplanets around M dwarfs, Wolf 1069 b: Earth-mass planet in the habitable zone of a nearby, very low-mass star |journal=Astronomy & Astrophysics |volume=670 |issue= |pages=A84 |doi=10.1051/0004-6361/202245322 |arxiv=2301.02477 |bibcode=2023A&A...670A..84K}}

{{cite journal |bibcode=2019AJ....158...56H |title=The Mass-Activity Relationships in M and K Dwarfs. I. Stellar Parameters of Our Sample of M and K Dwarfs |last1=Houdebine |first1=Éric R. |last2=Mullan |first2=D. J. |last3=Doyle |first3=J. G. |last4=de la Vieuville |first4=Geoffroy |last5=Butler |first5=C. J. |last6=Paletou |first6=F. |journal=The Astronomical Journal |year=2019 |volume=158 |issue=2 |pages=56 |doi=10.3847/1538-3881/ab23fe |arxiv=1905.07921 |s2cid=159041104 |doi-access=free }}

{{Cite journal |last1=Kemmer |first1=J. |last2=Lafarga |first2=M. |last3=Fuhrmeister |first3=B. |last4=Shan |first4=Y. |last5=Schöfer |first5=P. |last6=Jeffers |first6=S. V. |last7=Caballero |first7=J. A. |last8=Quirrenbach |first8=A. |last9=Amado |first9=P. J. |date=2025-04-11 |title=The CARMENES search for exoplanets around M dwarfs. Cluster analysis of signals from spectral activity indicators to search for shared periods |journal=Astronomy and Astrophysics |volume=697 |doi=10.1051/0004-6361/202347056 |arxiv=2504.08363|bibcode=2025A&A...697A.225K }}

}}

Category:Cygnus (constellation)

Category:M-type main-sequence stars

Category:Planetary systems with one confirmed planet