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GJ 1005

Observation data Epoch J2000      Equinox J2000
Constellation	Cetus
Right ascension	00 15 28.11090
Declination	−16° 08′ 01.6303″
Apparent magnitude (V)	11.483
Characteristics
Spectral type	M3.5V
Astrometry
Radial velocity (Rv)	-26.43 ± 0.1 km/s
Proper motion (μ)	RA: 731.83 mas/yr Dec.: -607.73 mas/yr
Parallax (π)	166.6 ± 0.3 mas
Distance	19.58 ± 0.04 ly (6.00 ± 0.01 pc)
Absolute magnitude (MV)	12.70 ± 0.01 / 15.12 ± 0.09
Orbit
Period (P)	4.55726 −0.00074 y.
Semi-major axis (a)	0.3037 ± 0.0005″
Eccentricity (e)	0.36136 −0.00098
Inclination (i)	143.93 −0.24°
Longitude of the node (Ω)	62.8 ± 0.4°
Periastron epoch (T)	JD 2449850.4 ± 0.8
Argument of periastron (ω) (secondary)	166.6 ± 0.5°
Details
GJ 1005 A
Mass	0.179 ± 0.002 M☉
Temperature	3341±224 K
Metallicity	-0.41 dex
GJ 1005 B
Mass	0.112 ± 0.001 M☉
Other designations
Gaia DR2 2368293487260807040, HIP 1242, G 158-50, G 266-76, LHS 1047, LP 764-87, LTT 114, 2MASS J00152799-1608008
Database references
SIMBAD	data
ARICNS	A
	B
GJ 1005Location of GJ 1005 in the constellation Cetus

GJ 1005 is a system of two red dwarfs, located in constellation Cetus at 19.6 light-years from Earth. The primary star is a M4V class star while the secondary is a class M7V.

The system was observed with the Hubble Space Telescope in the 1990s with its Fine Guidance Sensor. This data helped determine the mass of each of the components of L722-22/ LHS 1047 / GJ 1005.

References

1. ^ van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
2. Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. (2010). "UBV(RI)_C JHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society. 403 (4): 1949–1968. Bibcode:2010MNRAS.403.1949K. doi:10.1111/j.1365-2966.2009.16182.x.
3. ^ Benedict, G. F.; Henry, T. J.; Franz, O. G.; McArthur, B. E.; Wasserman, L. H.; Jao, Wei-Chun; Cargile, P. A.; Dieterich, S. B.; Bradley, A. J.; Nelan, E. P.; Whipple, A. L. (2016). "The Solar Neighborhood. XXXVII. The Mass–Luminosity Relation for Main-Sequence M Dwarfs". The Astronomical Journal. 152 (5): 141. arXiv:1608.04775. Bibcode:2016AJ....152..141B. doi:10.3847/0004-6256/152/5/141. S2CID 54029447.
4. Nidever, David L.; et al. (2013). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503–522. arXiv:astro-ph/0112477. Bibcode:2002ApJS..141..503N. doi:10.1086/340570. S2CID 51814894.
5. ^ Mann, Andrew W.; Dupuy, Trent; Kraus, Adam L.; Gaidos, Eric; Ansdell, Megan; Ireland, Michael; Rizzuto, Aaron C.; Hung, Chao-Ling; Dittmann, Jason; Factor, Samuel; Feiden, Gregory; Martinez, Raquel A.; Ruíz-Rodríguez, Dary; Chia Thao, Pa (2019), "How to Constrain Your M Dwarf. II. The Mass–Luminosity–Metallicity Relation from 0.075 to 0.70 Solar Masses", The Astrophysical Journal, 871 (1): 63, arXiv:1811.06938, Bibcode:2019ApJ...871...63M, doi:10.3847/1538-4357/aaf3bc, S2CID 119372932
6. Costa-Almeida, Ellen; De Mello, Gustavo F Porto; Giribaldi, Riano E.; Lorenzo-Oliveira, Diego; Ubaldo-Melo, Maria L. (2021), "M dwarf spectral indices at moderate resolution: Accurate Teff and [Fe/H] for 178 southern stars", Monthly Notices of the Royal Astronomical Society, 508 (4): 5148–5162, arXiv:2110.01658, doi:10.1093/mnras/stab2831
7. ^ Hershey, John L.; Taff, L. G. (1998-01-01). "Hubble Space Telescope Fine Guidance Sensor Astrometry of the Low-Mass Binary L722-22". The Astronomical Journal. 116 (3): 1440. Bibcode:1998AJ....116.1440H. doi:10.1086/300516. ISSN 1538-3881.

v t e Constellation of Cetus
List of stars in Cetus Cetus in Chinese astronomy
Stars	Bayer α (Menkar) β (Diphda) γ (Kaffaljidhma) δ ε ζ (Baten Kaitos) η θ ι κ κ λ μ ν ξ ξ ο (Mira) A B π ρ σ τ υ φ φ φ φ χ Flamsteed 1 2 3 6 7 9 13 14 20 46 49 56 (υ) 63 64 69 75 77 79 81 84 94 25 Ari Variable T UV YZ ZZ AY BL BW DK HR 10 72 159 228 500 672 870 HD 984 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 77 102 107 113 114 116 117 118 120 124 132 135 142 143 144 145 151 154 155 157 161 163 165 166 167 168 170 171 172 173 177 178 179 187 191 192 195 196 197 201 207 209 210 216 217 219 223 227 230 232 235 237 239 244 245 247 255 259 263 268 270 271 273 274 275 276 277 279 283 284 285 286 291 293 297 298 301 303 307 309 320 321 325 327 329 331 333 335 336 337 340 341 342 343 344 345 347 349 350 351 352 353 355 356 357 359 363 364 367 369 377 391 413 417 426 428 429 430 435 442 445 448 450 478 480 481 487 493 497 519 521 533 540 541 545 547 555 560 570 584 585 596 615 622 655 681 682 690 701 720 747 755 779 800 806 833 838 864 874 880 895 908 936 945 950 960 965 966 985 988 1009 1015 1019 1022 1032 1042 1052 1055 1073 1087 1090 1128 1142 1153 1218 7808 7828 7829 Other Arp 146 Arp 147 Arp 256 3C 75 Cetus Dwarf HCM-6A HD2 Holmberg 15A HXMM01 IC 1613 IC 1623 IRAS 01003-2238 Markarian 1014 Markarian 1018 MCG -03-04-014 PGC 2456 SDSS J0303-0019 SXDF-NB1006-2 9Spitch TON S180 UGC 711 UGC 1775 Wolf–Lundmark–Melotte
Galaxy clusters Abell 133 Abell 222 Abell 223 Abell 370 Abell 400 Arp 251 Gioiello IRC 0218 JKCS 041
Astronomical events SN 2005E SN 2005gj
Category

• Cetus
• Binary stars
• M-type main-sequence stars
• Gliese and GJ objects
• Hipparcos objects
• 2MASS objects