Lambda-1 Sculptoris (HIP 3356)

Lambda-1 Sculptoris is a blue-white main-sequence star in the constellation Sculptor. It lies about 473 light years away. It is moving through the Galaxy at a speed of 12.2 km/s relative to the Sun.

Sky position: RA 0h 42.7m, Dec -38° 27.8'

Common designations: Lambda-1 Sculptoris, HR 185, HD 4065, HIP 3356

Lambda-1 Sculptoris has the spectral type B9.5V. B-type stars are hot (about 10,000 to 30,000 K), luminous and blue-white. They are massive, short-lived stars, typically only tens of millions of years old, and are common in young clusters and OB associations. Its luminosity class V means it is a main-sequence (dwarf) star, still fusing hydrogen into helium in its core like the Sun.

How to find Lambda-1 Sculptoris in the sky

Lambda-1 Sculptoris lies in Sculptor. With a declination of -38° 27.8', it is visible from the entire Southern Hemisphere and from the Northern Hemisphere up to about latitude 52° N. Observers poleward of latitude 52° S see it as circumpolar: it never sets. It is highest in the sky at local midnight around October, which makes the weeks around that month the best time to observe it.

Tabulated data for Lambda-1 Sculptoris

Astrometry and spectroscopy

Right Ascension (J2000)	10.67871627° (0h 42.7m)
Declination (J2000)	-38.46348377° (-38° 27.8')
Galactic Longitude	311.54067829°
Galactic Latitude	-78.51857311°
Proper motion RA	2.56 mas/yr
Proper motion Dec	-6.72 mas/yr
Parallax	6.89 ± 0.71 mas
Spectral Type	B9.5V
Radial Velocity	11.10 km/s

Photometry

Band	Magnitude	Abs. Mag.
J	6.09	0.29
H	6.13	0.32
K	6.07	0.27

Derivations

Heliocentric distance: 145.14 pc (473 light years) (10.3% margin of error)
Transverse velocity: 4.9 km/s
Space velocity relative to the Sun: 12.2 km/s
Galactic position (X, Y, Z): 19.2 pc, -21.6 pc, -142.2 pc
Galactic velocity (U, V, W): 2.3 km/s, -6.4 km/s, -10.0 km/s

Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.