HD 97413

HD 97413 is a binary star located in the southern constellation Centaurus. The system has a combined magnitude of 6.27,^[3] placing it near the limit for naked eye visibility. Based on parallax measurements from the Gaia spacecraft, the system is located 320 light years away from the Solar System.^[2]

HD 97413

Location of HD 97413 (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Centaurus[1]
Right ascension	11h 12m 10.18976s[2]
Declination	−46° 16′ 00.3202″[2]
Apparent magnitude (V)	6.27±0.01[3]
Characteristics
Spectral type	A1 V[4]
U−B color index	+0.04[5]
B−V color index	+0.15[5]
Astrometry
Proper motion (μ)	RA: −46.711 mas/yr[2] Dec.: +9.593 mas/yr[2]
Parallax (π)	10.1866±0.155 mas[2]
Distance	320 ± 5 ly (98 ± 1 pc)
Absolute magnitude (MV)	+1.5[1]
Details
A
Mass	1.94±0.11[6] M☉
Radius	2.18+0.05 −0.08[7] R☉
Luminosity	19.6[8] L☉
Surface gravity (log g)	4.07±0.05[6] cgs
Temperature	7,800[8] K
Metallicity [Fe/H]	−0.29[9] dex
Other designations
CD−45°6771, CPD−45°5279, GC 15400, HD 97413, HIP 54718, SAO 222635, WDS J11122-4616AB[10]
Database references
SIMBAD	data

The objects binarity was detected in a Hipparcos survey. The two components can't be distinguished because both stars have an angular separation of 0.01″.^[11] Nevertheless, speckle interferometry revealed the components to have a 2.6 magnitude difference.^[12] They are located along a position angle of 250°.^[11]

The visible component – HD 97413 A – has a stellar classification of A1 V, indicating that it is an ordinary A-type main-sequence star. It has 1.94 times the mass of the Sun^[6] and a radius of 2.18 R_☉.^[7] It radiates 19.6 times the luminosity of the Sun^[8] from its photosphere at an effective temperature of 7,800 K,^[8] giving it a white hue. However, this is not typical for an A1 star. Parameters determined by Gaia's extinction reveal HD 97413 A to have an iron abundance half of the Sun's,^[9] making it metal deficient.