HD 174474

HD 174474, also designated as HR 7095 or rarely 35 G. Telescopii, is a solitary white-hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.17,^[2] placing it near the limit for naked eye visibility. The object is located relatively close at a distance of 244 light years based on Gaia DR3 parallax measurements^[1] but is drifting closer with a heliocentric radial velocity of −44 km/s.^[5] At its current distance, HD 174474's brightness is diminished by 0.26 magnitudes due to interstellar dust.^[15] It has an absolute magnitude of +1.61.^[6]

HD 174474

Location of HD 174474 (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Telescopium
Right ascension	18h 53m 02.34680s[1]
Declination	−48° 21′ 39.2965″[1]
Apparent magnitude (V)	6.17±0.01[2]
Characteristics
Spectral type	A2 V[3]
U−B color index	+0.08[4]
B−V color index	+0.14[4]
Astrometry
Radial velocity (Rv)	−44±4[5] km/s
Proper motion (μ)	RA: −17.178 mas/yr[1] Dec.: −77.772 mas/yr[1]
Parallax (π)	13.3771±0.0444 mas[1]
Distance	243.8 ± 0.8 ly (74.8 ± 0.2 pc)
Absolute magnitude (MV)	+1.61[6]
Details
Mass	2.05±0.04[7] M☉
Radius	1.89±0.10[8] R☉
Luminosity	18.14[9] L☉
Surface gravity (log g)	4.21+0.09 −0.06[10] cgs
Temperature	8664±295[11] K
Metallicity [Fe/H]	−0.11[12] dex
Age	630[11] Myr
Other designations
35 G. Telescopii[13], CD−48°12769, CPD−48°9971, GC 25872, HD 174474, HIP 92676, HR 7095, SAO 229342[14]
Database references
SIMBAD	data

This is an ordinary A-type main-sequence star with a stellar classification of A2 V.^[3] It has double the mass of the Sun and 1.89 times the Sun's radius.^[8] It radiates 18.1 times the luminosity of the Sun from its photosphere at an effective temperature of 8,664 K.^[11] HD 174474 is slightly metal deficient with an iron abundance 22% below solar levels ([Fe/H] = −0.11). It is estimated to be 630 million years old based on stellar evolution models from David & Hillenbrand (2015).^[11]