GJ 1002#Planetary system

{{Short description|Red dwarf star in the constellation Cetus}}

{{Starbox begin}}

{{Starbox image

| image = 250px

| caption = A light curve for GJ 1002, plotted from TESS data

}}

{{Starbox observe

| epoch = J2000

| constell = Cetus{{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|00|06|43.19732}}

| dec = {{DEC|-07|32|17.0191}}

| appmag_v = {{val|13.837|0.003}}

}}

{{Starbox character

| type = Main sequence

| class = M5.5V

| appmag_1_passband = V

| appmag_1 = {{val|13.837|0.003}}

| appmag_2_passband = G

| appmag_2 = {{val|11.774|0.003}}

| appmag_3_passband = J

| appmag_3 = {{val|8.323|0.019}}

| appmag_4_passband = H

| appmag_4 = {{val|7.792|0.034}}

| appmag_5_passband = K

| appmag_5 = {{val|7.439|0.021}}

}}

{{Starbox astrometry

| radial_v = {{val|-40.46|0.30}}

| prop_mo_ra = {{val|-811.566}}

| prop_mo_dec = {{val|-1893.251}}

| pm_footnote =

| parallax = 206.3500

| p_error = 0.0474

| parallax_footnote =

| absmag_v =

| absmag_bol =

}}

{{Starbox detail

| source =

| mass = {{val|0.120|0.010}}

| radius = {{val|0.137|0.005}}

| luminosity_bolometric = {{val|0.001406|0.000019}}

| habitable_inner =

| habitable_outer =

| gravity = {{val|5.10|0.06}}

| temperature = {{val|3024|52}}

| metal_fe = {{val|-0.25|0.19}}

| rotation = {{val|161.28|2.93}} days

| rotational_velocity =

| age_gyr =

}}

{{Starbox catalog

| names = {{odlist | 2MASS = J00064325-0732147 | G = 158-27 | GJ = 1002 | LHS = 2 | NLTT = 248 | NSV = 15022 | PLX = 9.01 | PM = 00042-0747 | TIC = 176287658}}

}}

{{Starbox reference

| Simbad = GJ+1002

| NSTED = GJ_1002

}}

{{Starbox end}}

GJ 1002 (or Gliese 1002) is a nearby red dwarf star, located {{convert|15.8|ly|pc|lk=on|abbr=off}} away from the Solar System in the constellation of Cetus. The star has 12% the mass and 14% the radius of the Sun, and a temperature of {{convert|3024|K|C F|lk=on}}. It hosts a system of two known exoplanets.

Planetary system

Two planetary companions to GJ 1002 were discovered in 2022 via radial velocity. Both have minimum masses close to that of Earth and orbit within the habitable zone of their star. While these planets do not transit their host star, it may be possible to determine the presence and composition of atmospheres with future instruments such as the ANDES spectrograph for the Extremely Large Telescope.

{{Orbitbox planet begin

| name = GJ 1002

| table_ref =

}}

{{Orbitbox planet

| exoplanet = b

| mass_earth = {{val|1.08|0.13|p=≥}}

| radius_earth =

| semimajor = {{val|0.0457|0.0013}}

| period = {{val|10.3465|0.027}}

| eccentricity =

| inclination =

}}

{{Orbitbox planet

| exoplanet = c

| mass_earth = {{val|1.36|0.17|p=≥}}

| radius_earth =

| semimajor = {{val|0.0738|0.0021}}

| period = {{val|21.202|0.013}}

| eccentricity =

| inclination =

}}

{{Orbitbox end}}

See also

References

{{reflist|refs=

{{cite simbad |title=GJ 1002 |access-date=28 November 2022}}

{{Cite Gaia DR3|2441630500517079808}}

{{cite web

| title=MAST: Barbara A. Mikulski Archive for Space Telescopes

| url=https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html

| publisher=Space Telescope Science Institute | access-date=28 May 2023}}

{{cite journal |last1=Suárez Mascareño |first1=A. |last2=González-Alvarez |first2=E. |display-authors=etal |date=December 2022 |title=Two temperate Earth-mass planets orbiting the nearby star GJ 1002 |journal=Astronomy & Astrophysics |volume=670 |issue= |pages=A5 |doi=10.1051/0004-6361/202244991 |arxiv=2212.07332 |bibcode=2023A&A...670A...5S|s2cid=254353639 }}

{{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 }}

}}

{{Nearest systems|3}}

{{Cetus}}

Category:Cetus

Category:M-type main-sequence stars

Category:Planetary systems with two confirmed planets

1002

J00064325-0732147

Category:Suspected variables