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HD 43848 is a 9th magnitude K-type subgiant star located approximately 123 light-years away in the constellation of Columba. The star is less massive than the Sun.

On October 29, 2008, radial velocity measurements made with the MIKE echelle spectrograph on the 6.5-m Magellan II (Clay) telescope revealed the presence of a companion of at least 25 Jupiter masses orbiting the star. Initially thought to be a brown dwarf, astrometric measurements reveal that the true mass of the object is 120
₋₄₃ Jupiter masses, implying that it is likely to be a red dwarf star.

See also

• BD-17°63 b
• HD 131664
• HD 145377 b
• HD 153950 b
• HD 20868 b
• HD 73267 b

References

1. ^ van Leeuwen, F. (November 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. ^ Trevisan, M.; et al. (November 2011), "Analysis of old very metal rich stars in the solar neighbourhood", Astronomy & Astrophysics, 535: A42, arXiv:1109.6304, Bibcode:2011A&A...535A..42T, doi:10.1051/0004-6361/201016056, S2CID 49565866. See table 13.
3. Gray, R. O.; et al. (October 2003), "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I.", The Astronomical Journal, 126 (4): 2048–2059, arXiv:astro-ph/0308182, Bibcode:2003AJ....126.2048G, doi:10.1086/378365, S2CID 119417105
4. Minniti, Dante; et al. (2009), "Low-Mass Companions for Five Solar-Type Stars From the Magellan Planet Search Program", The Astrophysical Journal, 693 (2): 1424–1430, arXiv:0810.5348, Bibcode:2009ApJ...693.1424M, doi:10.1088/0004-637X/693/2/1424, S2CID 119224845
5. Sozzetti, A.; Desidera, S. (2010), "Hipparcos preliminary astrometric masses for the two close-in companions to HD 131664 and HD 43848. A brown dwarf and a low-mass star", Astronomy and Astrophysics, 509: A103, arXiv:0909.4454, Bibcode:2010A&A...509A.103S, doi:10.1051/0004-6361/200912717, S2CID 15419641

v t e Constellation of Columba
List of stars in Columba Columba in Chinese astronomy
Stars	Bayer α (Phact) β (Wazn) γ δ ε η θ (Elkurud) κ λ (Tsze) μ ν ν ξ ο π π σ Variable WZ AF AP HR 1721 1758 1835 1877 1958 2069 2082 2131 2149 2263 2288 2399 2411 2445 2446 HD 43848 Other NGTS-1 NGTS-3 WASP-63
Exoplanets NGTS-1b NGTS-3Ab NGTS-4b WASP-63b
Star clusters NGC 1851
Galaxies	NGC 1792 1808 1989 1992 2090 Other ESO 306-17 PKS 0521-365
Category

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• K-type subgiants
• Henry Draper Catalogue objects
• Hipparcos objects
• Columba (constellation)
• M-type main-sequence stars
• Durchmusterung objects
• Main-sequence-star stubs