LHS 3844

Last updated
LHS 3844 / Batsũ̀
Observation data
Epoch J2000        Equinox J2000
Constellation Indus [1]
Right ascension 22h 41m 58.11718s [2]
Declination −69° 10′ 08.3207″ [2]
Apparent magnitude  (V)15.26±0.03 [3]
Characteristics
Evolutionary stage Main sequence
Spectral type M4.5-M5 [3]
Apparent magnitude  (V)15.26±0.03 [3]
Apparent magnitude  (G)13.365±0.003 [2]
Apparent magnitude  (J)10.046±0.023 [3]
Apparent magnitude  (H)9.477±0.023 [3]
Apparent magnitude  (K)9.145±0.023 [3]
Astrometry
Radial velocity (Rv)−9.90±0.76 [2]  km/s
Proper motion (μ)RA: 334.419  mas/yr [2]
Dec.: −726.986  mas/yr [2]
Parallax (π)67.2123 ± 0.0187  mas [2]
Distance 48.53 ± 0.01  ly
(14.878 ± 0.004  pc)
Absolute magnitude  (MV)14.39±0.02 [3]
Details [3]
Mass 0.151±0.014  M☉
Radius 0.189±0.006  R☉
Luminosity (bolometric)0.00272±0.0004  L☉
Surface gravity (log g)5.06±0.01  cgs
Temperature 3036±77  K
Rotation 128±24  d
Age 7.8±1.6 [4]   Gyr
Other designations
Batsũ̀, L  119-213, LFT  1732, LHS  3844, NLTT  54534, TOI-136, TIC  410153553, 2MASS J22415815-6910089, WISEA J224158.77-691015.9 [5]
Database references
SIMBAD data

LHS 3844 is a red dwarf star located 48.5 light-years (14.9 parsecs ) away from the Solar System in the constellation of Indus. The star has about 15% the mass and 19% the radius of the Sun. [3] It is a relatively inactive red dwarf with a slow rotation period of about 128 days, though UV flares have been observed. [6] LHS 3844 is orbited by one known exoplanet.

Contents

Nomenclature

The designation LHS 3844 comes from one of Luyten's catalogues of stars with high proper motion.

In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project. [7] The approved names, proposed by a team from Costa Rica, were announced in June 2023. LHS 3844 is named Batsũ̀ and its planet is named Kua'kua, after the Bribri words for "hummingbird" and "butterfly". [8]

Planetary system

The exoplanet LHS 3844 b was discovered in 2018 using TESS. [3] It is a terrestrial planet larger than Earth with an orbital period of less than a day, and likely does not have an atmosphere. Its low albedo suggests that its surface may resemble that of the Moon or Mercury. [9] [10]

The LHS 3844 planetary system [3]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b / Kua'kua ~2.25  M🜨 0.00622±0.000170.46292913±0.0000019—88.50±0.51 ° 1.303±0.022  R🜨

Related Research Articles

HD 118203 is a star located in the northern circumpolar constellation of Ursa Major. It has the proper name Liesma, which means flame, and it is the name of a character from the Latvian poem Staburags un Liesma. The name was selected in the NameExoWorlds campaign by Latvia, during the 100th anniversary of the IAU.

<span class="mw-page-title-main">WASP-19b</span> Extrasolar planet in the constellation Vela

WASP-19b, formally named Banksia, is an exoplanet, notable for possessing one of the shortest orbital periods of any known planetary body: 0.7888399 days or approximately 18.932 hours. It has a mass close to that of Jupiter, but by comparison has a much larger radius ; making it nearly the size of a low-mass star. It orbits the star WASP-19 in the Vela constellation. At the time of discovery it was the shortest period hot Jupiter discovered as planets with shorter orbital periods had a rocky, or metallic composition.

<span class="mw-page-title-main">GJ 1214</span> Star in the constellation Ophiuchus

GJ 1214 is a dim M4.5 red dwarf star in the constellation Ophiuchus with an apparent magnitude of 14.7. It is located at a distance of 47.8 light-years from Earth. GJ 1214 hosts one known exoplanet.

<span class="mw-page-title-main">GJ 3470 b</span> Hot Neptune orbiting GJ 3470

GJ 3470 b is an exoplanet orbiting the star GJ 3470, located in the constellation Cancer. With a mass of just under 14 Earth-masses and a radius approximately 4.3 times that of Earth's, it is likely something akin to Neptune despite the initially strong belief that the planet was not covered in clouds like the gas giants in the Solar System.

<span class="mw-page-title-main">LHS 1140</span> Star in the constellation Cetus

LHS 1140 is a red dwarf in the constellation of Cetus. Based on stellar parallax measurement, it is 48.8 light-years away from the Sun. 'LHS' refers to the Luyten Half-Second Catalogue of stars with proper motions exceeding half a second of arc annually. The star is over 5 billion years old and has only about 18% the mass of the Sun and 21% of its radius. LHS 1140's rotational period is 130 days. No flares have been observed.

<span class="mw-page-title-main">LHS 3844 b</span> Exoplanet in the constellation Indus

LHS 3844 b, formally named Kua'kua, is an exoplanet orbiting the red dwarf LHS 3844, about 48.5 light-years away in the constellation Indus, discovered using the Transiting Exoplanet Survey Satellite. It orbits its parent star once every 11 hours, and its radius is 1.32 times that of Earth. It has a low albedo, indicating that its surface may resemble that of the Moon or Mercury. LHS 3844 b probably does not have an atmosphere as almost no heat goes to its night side, and it has a dayside temperature of 1,040 K. The presence of cloudy atmosphere with cloud tops above pressure level of 0.1 bar cannot be excluded though.

TOI-700 is a red dwarf 101.4 light-years away from Earth located in the Dorado constellation that hosts TOI-700 d, the first Earth-sized exoplanet in the habitable zone discovered by the Transiting Exoplanet Survey Satellite (TESS).

<span class="mw-page-title-main">LTT 1445</span> Star system in the constellation Eridanus

LTT 1445 is a triple M-dwarf system 22.4 light-years distant in the constellation Eridanus. The primary LTT 1445 A hosts two exoplanets—one discovered in 2019 that transits the star every 5.36 days, and another found in 2021 that transits the star every 3.12 days, close to a 12:7 resonance. As of August 2019 it is the second closest transiting exoplanet system discovered, with the closest being HD 219134 bc.

GJ 3470 is a red dwarf star located in the constellation of Cancer, 96 light-years away from Earth. With a faint apparent magnitude of 12.3, it is not visible to the naked eye. It hosts one known exoplanet.

WASP-63 or Kosjenka, also known as CD-38 2551, is a single star with an exoplanetary companion in the southern constellation of Columba. It is too faint to be visible with the naked eye, having an apparent visual magnitude of 11.1. The distance to this system is approximately 942 light-years based on parallax measurements, but it is drifting closer with a radial velocity of −24 km/s.

WASP-69, also named Wouri, is a K-type main-sequence star 164 light-years away. Its surface temperature is 4782±15 K. WASP-69 is slightly enriched in heavy elements compared to the Sun, with a metallicity Fe/H index of 0.10±0.01, and is much younger than the Sun at 2 billion years. The data regarding starspot activity of WASP-69 are inconclusive, but spot coverage of the photosphere may be very high.

<span class="mw-page-title-main">Gliese 486</span> Star in constellation of Virgo

Gliese 486, also known as Wolf 437 and formally named Gar, is a red dwarf star 26.4 light-years away in the constellation Virgo. It hosts one known exoplanet.

L 98-59 is a bright M dwarf star, located in the constellation of Volans, at a distance of 10.608 parsecs, as measured by Gaia.

Gliese 367 is a red dwarf star 30.7 light-years from Earth in the constellation of Vela. It is suspected to be a variable with amplitude 0.012 stellar magnitude and period 5.16 years. A stellar multiplicity survey in 2015 failed to detect any stellar companions to Gliese 367. It hosts three known exoplanets, Gliese 367 b, c & d.

LTT 9779 is a G-type main-sequence star located 264 light-years away from the Solar System in the constellation of Sculptor. The star is about 95% the radius and about the same mass as the Sun, but younger than the Sun at 1.7 billion years old, hence its lower luminosity. It has a temperature of 5,443 K and a rotation period of 45 days. LTT 9779 is orbited by one known exoplanet.

L 168-9 is a red dwarf star located 82.1 light-years away from the Solar System in the constellation of Tucana. The star has about 62% the mass and 60% the radius of the Sun. It has a temperature of 3,800 K and a rotation period of 29.8 days. L 168-9 is orbited by one known exoplanet.

GJ 1252 is a red dwarf star located 66.5 light-years away from the Solar System in the constellation of Telescopium. The star has about 38% the mass and 39% the radius of the Sun, and a temperature of about 3,458 K. GJ 1252 is orbited by one known exoplanet.

References

  1. ↑ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008. Retrieved 27 August 2022.
  2. 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID   244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 3 4 5 6 7 8 9 10 11 Vanderspek, Roland; et al. (February 2019). "TESS Discovery of an Ultra-short-period Planet around the Nearby M Dwarf LHS 3844". The Astrophysical Journal Letters . 871 (2): L24. arXiv: 1809.07242 . Bibcode:2019ApJ...871L..24V. doi:10.3847/2041-8213/aafb7a. S2CID   119009146.
  4. ↑ Kane, Stephen R.; et al. (September 2020). "A Volatile-poor Formation of LHS 3844b Based on Its Lack of Significant Atmosphere". The Planetary Science Journal . 1 (2): 36. arXiv: 2007.14493 . Bibcode:2020PSJ.....1...36K. doi:10.3847/PSJ/abaab5. S2CID   220845575.
  5. ↑ "LHS 3844". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 27 August 2022.
  6. ↑ Diamond-Lowe, Hannah; et al. (July 2021). "The High-energy Spectrum of the Nearby Planet-hosting Inactive Mid-M Dwarf LHS 3844". The Astronomical Journal . 162 (1): 10. arXiv: 2104.10522 . Bibcode:2021AJ....162...10D. doi:10.3847/1538-3881/abfa1c.
  7. ↑ "List of ExoWorlds 2022". nameexoworlds.iau.org. IAU. 8 August 2022. Retrieved 27 August 2022.
  8. ↑ "2022 Approved Names". nameexoworlds.iau.org. IAU . Retrieved 7 June 2023.
  9. ↑ Kreidburg, Laura; et al. (August 2019). "Absence of a thick atmosphere on the terrestrial exoplanet LHS 3844b". Nature . 573 (7772): 87–90. arXiv: 1908.06834 . Bibcode:2019Natur.573...87K. doi:10.1038/s41586-019-1497-4. PMID   31427764. S2CID   256819677.
  10. ↑ Diamond-Lowe, Hannah; et al. (October 2020). "Optical Transmission Spectroscopy of the Terrestrial Exoplanet LHS 3844b from 13 Ground-based Transit Observations". The Astronomical Journal . 160 (4): 188. arXiv: 2008.05444 . Bibcode:2020AJ....160..188D. doi:10.3847/1538-3881/abaf4f. S2CID   221103928.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.