GJ 1002 b

Potentially habitable exoplanet

GJ 1002 b (also designated as Gliese 1002 b) is a potentially habitable exoplanet (potentially Earth's closest habitable planet^[1]) located 16 light years away, in the constellation of Cetus.^[2] The planet, which has an Earth Similarity Index of 86%, is in the habitable zone of its parent star.^[3] GJ 1002 b has a minimum mass of 1.08 Earth masses and is estimated by the Planetary Habitability Laboratory to have 1.03 times the radius of Earth and a surface temperature of 261 Kelvin.^[4]

Detection

GJ 1002 b was detected in 2022 via the radial velocity method and the planets mass was also detected via the radial velocity method.

Host star

The host star, GJ 1002, is a quiet M5.5V type red dwarf not believed to release flares that could harm the atmosphere.^[5] The planet orbits its host star at a distance of 0.0457 AU (Astronomical units), with a 10.3 day orbital period and a 0.0 eccentricity.^[6]^[7]

References

^ "PHL @ UPR Arecibo - The Habitable Exoplanets Catalog". phl.upr.edu. Retrieved 2023-01-08.
^ Dreizler, S.; V., S.; Jeffers; Rodríguez, E.; Zechmeister, M.; Barnes, J. R.; Haswell, C. A.; Coleman, G.; Lalitha, S.; Soto, D. Hidalgo; Strachan, J. B. P.; Hambsch, F.-J.; López-González, M. J.; Morales, N.; López, C. Rodríguez (2020-03-21). "Red Dots: A temperate 1.5 Earth-mass planet in a compact multi-terrestrial planet system around GJ1061". Monthly Notices of the Royal Astronomical Society. 493 (1): 536–550. arXiv:1908.04717. doi:10.1093/mnras/staa248. ISSN 0035-8711.
^ "EarthSky | 2 possibly Earth-like worlds, just 16 light-years away". earthsky.org. 2022-12-29. Retrieved 2023-01-08.
^ "PHL @ UPR Arecibo - Earth Similarity Index (ESI)". phl.upr.edu. Retrieved 2023-01-08.
^ Nowakowski, Tomasz; Phys.org. "Two Earth-mass exoplanets orbiting nearby star discovered". phys.org. Retrieved 2023-01-08.
^ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2023-08-28.
^ "The Extrasolar Planet Encyclopaedia — GJ 1002 b". Extrasolar Planets Encyclopaedia. Retrieved 2023-08-28.

Constellation of Cetus

Stars

Bayer	α (Menkar) β (Diphda) γ (Kaffaljidhma) δ ε ζ (Baten Kaitos) η θ ι κ¹ κ² λ μ ν ξ¹ ξ² ο (Mira) A B π ρ σ τ υ φ¹ φ² φ³ φ⁴ χ
Flamsteed	1 2 3 6 7 9 13 14 20 46 49 56 (υ¹) 63 64 69 75 77 79 81 84 94 25 Ari
Variable	T UV YZ ZZ AY BL DK
HR	10 72 159 228 500 870
HD	1690 2638 4747 5319 6718 7449 11506 11964 15115 16008 224693 (Axólotl)
Other	2MASS J01225093−2439505 BD-07 436 BD−17 63 (Felixvarela) Cayrel's Star CFBDS J005910.90–011401.3 DENIS-P J020529.0−115925 GD 40 Gliese 65 Gliese 105 GJ 1002 GJ 1005 HIP 5158 HIP 11952 LHS 1140 NGC 156 NGC 158 NGC 302 NGC 308 NGC 310 PSR J0108−1431 SDSS J001820.5−093939.2 SDSS J0106−1000 ULAS J003402.77−005206.7 WD J2356−209 WASP-20 WASP-26 WASP-44 WASP-71 (Mpingo) WISE J0254+0223 WHL0137-LS

Exoplanets	79 Ceti b 81 Ceti b 94 Ceti b BD−17 63 b HD 1461 b HD 2638 b HD 5319 b HD 11506 b c HD 11964 b c HD 224693 b HIP 5158 b c HIP 11915 b τ Ceti e f

Nebulae	NGC 246

Galaxies

Messier	77
NGC	17 35 45 47 50 54 59 61 62 64 65 66 73 77 102 107 113 114 116 117 118 120 124 132 135 142 143 144 145 151 154 155 157 161 163 165 166 167 168 170 171 172 173 177 178 179 187 191 192 195 196 197 201 207 209 210 216 217 219 223 227 230 232 235 237 239 244 245 247 255 259 263 268 270 271 273 274 275 276 277 279 283 284 285 286 291 293 297 298 301 303 307 309 320 321 325 327 329 331 333 335 336 337 340 341 342 343 344 345 347 349 350 351 352 353 355 356 357 359 363 364 367 369 377 391 413 417 426 428 429 430 435 442 445 448 450 478 480 481 487 493 497 519 521 533 540 541 545 547 555 560 570 584 585 596 615 622 655 681 690 701 720 747 755 779 800 806 833 838 864 874 880 895 908 936 945 950 960 965 966 985 988 1009 1015 1019 1022 1032 1042 1052 1055 1073 1087 1090 1128 1142 1218 7828 7829
Other	Arp 146 Arp 147 Arp 256 3C 75 Cetus Dwarf HCM-6A HD2 Holmberg 15A HXMM01 IC 42 IC 158 IC 1613 IC 1623 MCG -03-04-014 PGC 2456 SDSS J0303-0019 SXDF-NB1006-2 9Spitch Wolf–Lundmark–Melotte