Turner 5

(MWSC 1684; OCSN 277)

0.51 UTI

0.3

C_N

0.15

C_dens

0.5

C_C3

0.81

C_lit

1.0

C_dup

N_m (P>50%) 30

Core radius and density 1.4 [pc], 0.8 [pc^-2]

C3 classification BB

C_N 0.3 Poorly populated
C_dens 0.15 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.81 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Turner 5 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the absorption, age, and metallicity parameters (see Parameters). It is well-studied in the literature.

Very close Low extinction Massive Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair (not dynamically associated) P140, along with HSC_2120.

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.5954, e_all=0.1683.

Data

🔍 Search references for Turner 5 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	143.15	-36.349	2.369	0.013	-2.992	-4.353
Li et al.	2025	143.284	-36.358	2.373	0.092	-3.115	–
Almeida et al.	2025	143.451	-36.41	–	–	–	–
Alfonso et al.	2024	143.651	-36.372	2.372	0.146	-3.033	–
Cavallo et al.	2024	143.584	-36.148	2.397	–	–	–
Hunt & Reffert	2023	143.139	-36.429	2.402	0.067	-3.019	-3.664
Qin et al.	2023	143.36	-36.41	2.4	0.07	-3.0	-4.34
He et al.	2022	143.582	-36.425	2.403	0.161	-3.034	–
Tarricq et al.	2022	142.5	-36.249	2.376	0.001	-2.962	–
Jadhav & Subramaniam	2021	143.284	-36.358	–	–	–	–
Dias et al.	2021	143.451	-36.41	2.342	0.034	-3.079	-3.584
Spina et al.	2021	142.998	-36.263	2.342	0.017	-3.033	–
Cantat-Gaudin et al.	2020	143.284	-36.358	2.373	0.092	-3.115	–
Cantat-Gaudin & Anders	2020	143.284	-36.358	2.373	0.092	-3.115	–
Soubiran et al.	2018	143.284	-36.358	–	–	–	-3.49
Bica et al.	2019	143.461	-36.621	–	–	–	–
Cantat-Gaudin et al.	2018	143.284	-36.358	2.373	0.092	-3.115	–
Dib et al.	2018	143.317	-36.41	–	–	–	–
Joshi et al.	2016	143.317	-36.41	–	–	–	–
Dias et al.	2014	143.463	-36.615	–	-4.69	2.04	–
Gozha et al.	2012	143.463	-36.615	–	–	–	–
Piskunov et al.	2008	143.127	-36.462	–	–	–	–
Kharchenko et al.	2007	143.46	-36.62	–	1.65	–	26.2
Piskunov et al.	2007	143.127	-36.462	–	–	–	–
Kharchenko et al.	2005	143.13	-36.47	–	0.0	-3.73	–
Dias et al.	2002	143.463	-36.615	–	0.0	-3.73	26.2

💡 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]	B_frac	BSS
UCC	99999–	0.425	0.29	0.45	309	-0.074	1166	–	0
Li et al.	2025	0.43	0.14	–	431	0.041	–	–	–
Almeida et al.	2025	0.43	0.23	–	367	–	36	–	–
Alfonso et al.	2024	0.43	0.04	–	507	-0.074	–	–	–
Cavallo et al.	2024	0.43	0.38	–	182	0.330	–	–	–
Hunt & Reffert	2023	0.40	0.17	0.45	164	–	–	–	–
Qin et al.	2023	0.49	0.35	–	282	–	–	–	–
He et al.	2022	–	0.50	–	112	–	–	–	–
Tarricq et al.	2022	0.43	–	–	331	–	–	–	–
Jadhav & Subramaniam	2021	0.43	0.04	–	324	–	49	–	0⁽¹⁾
Dias et al.	2021	0.43	0.23	–	367	-0.075	–	–	–
Spina et al.	2021	0.43	–	–	324	–	–	–	–
Cantat-Gaudin et al.	2020	0.43	0.04	–	324	–	–	–	–
Kounkel et al.	2020	0.40	0.26	–	407	–	–	–	–
Cantat-Gaudin & Anders	2020	0.42	–	–	–	–	–	–	–
Soubiran et al.	2018	0.42	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.42	–	–	–	–	–	–	–
Dib et al.	2018	0.40	–	–	309	–	–	–	–
Joshi et al.	2016	0.40	0.32	–	309	–	4074	–	–
Gozha et al.	2012	2.30	–	–	309	–	4074	–	–
Piskunov et al.	2008	0.40	0.32	–	309	–	1542⁽¹⁾	–	–
Piskunov et al.	2007	0.40	0.32	–	309	–	789	–	–
Kharchenko et al.	2005	0.40	0.32	–	309	–	–	–	–
Dias et al.	2002	0.40	0.32	–	309	-0.210	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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