HD 89744 is astar in the northerncircumpolar constellation ofUrsa Major, positioned about 0.4° due south of the bright starTania Australis (μ UMa).^[13] This object has a yellow-white hue and is dimly visible to the naked eye with anapparent visual magnitude of 5.73.^[2] The distance to this star has been measured using theparallax method, which locates it 126 light years from theSun. It is drifting closer with aradial velocity of −4.4 km/s.^[2] There are two knownexoplanets orbiting this star.

At various times the star HD 89744 has been assigned astellar classification of F7V,^[4][14] F7IV-V,^[15] and F8IV,^[5][2] suggesting it is anF-type main-sequence star that isevolving onto thesubgiant branch. It is ~8.4^[9] billion years old with aninactive chromosphere^[15] and is spinning with aprojected rotational velocity of 9.3 km/s.^[10] The star is 2.16^[8] times the size of the Sun with 1.4^[7] times the Sun's radius. It is a highmetallicity star, showing a greater abundance of heavier elements than in the Sun. The star is radiating 6.4^[9] times theluminosity of the Sun from itsphotosphere at aneffective temperature of 6,381 K.^[7]

This star was identified as a member of theAB Doradus moving group by J. López-Santiago and collaborators in 2006.^[16] It was later shown that its evolutionary state is incompatible with membership.^[17]

In 2001, a faint co-moving companion was identified at anangular separation of63.1″ from the primary.^[18] This is equivalent to a linearprojected separation of 2,456 AU (0.04 ly).^[11] The companion, designated component B, is an L-class (~L0.5)^[4]brown dwarf^[18] with a mass of~0.076 M_☉.^[11]

In April 2000, aplanet was discovered usingradial velocity measurements taken atFred Lawrence Whipple Observatory andLick Observatory.^[14] The orbital parameters were updated in 2006 and 2007 using additional measurements.^[19][20] A second planet with a much longer period was discovered in 2019.^[21]

• List of exoplanets discovered before 2000 - HD 89744 b

• F-type subgiants
• Brown dwarfs
• Planetary systems with two confirmed planets
• Ursa Major
• Durchmusterung objects
• Gliese and GJ objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects

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