Turner 4

0.04 UTI

0.0

C_N

0.06

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 19

Radius (P>50% members) 7.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.06 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

Turner 4 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 9 years.

(*): The parallax distance estimate (~3.46 kpc) differs significantly from the median photometric distance (~1.67 kpc).

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Low extinction Intermediate age

Data

🔍 Search references for Turner 4 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	274.255	-18.658	0.289	-1.279	-2.087	–
Loktin & Popova	2017	274.26	-18.721	–	4.429	-2.053	–
Dias et al.	2014	274.283	-18.7	–	0.44	-1.08	–
Dias et al.	2002	274.283	-18.7	–	0.44	-1.08	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	Bfr	BSS
Loktin & Popova	2017	1.00	0.95	–	513	–	–	–	–
Dias et al.	2002	2.33	–	–	10	–	–	–	–

Visualization

ℹ️