Stock 4

(MWSC 147)

0.90 UTI

0.76

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 129

Radius (P>50% members) 9.9 [arcmin]

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

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

Overview

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Stock 4 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Stock 4 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	–	28.016	57.054	0.73	-1.092	0.303	-32.005
Li et al.	2025	28.039	57.055	0.729	-1.115	0.341	–
Almeida et al.	2025	28.06	57.049	–	–	–	–
Zhang et al.	2024	28.012	57.056	–	–	–	–
Hunt & Reffert	2024	28.012	57.056	0.728	-1.076	0.285	-39.003
Cavallo et al.	2024	28.021	57.056	0.73	–	–	–
Hunt & Reffert	2023	28.012	57.056	0.728	-1.076	0.285	-39.003
Almeida et al.	2023	28.065	57.063	–	–	–	–
Just et al.	2023	28.272	57.008	–	–	–	–
Tarricq et al.	2022	28.063	57.054	0.721	-1.081	0.303	–
Dias et al.	2021	28.06	57.049	0.727	-1.13	0.334	–
Cantat-Gaudin et al.	2020	28.039	57.055	0.729	-1.115	0.341	–
Cantat-Gaudin & Anders	2020	28.039	57.055	0.729	-1.115	0.341	–
Cantat-Gaudin et al.	2018	28.039	57.055	0.729	-1.115	0.341	–
Kharchenko et al.	2016	28.272	57.008	–	–	–	–
Dias et al.	2014	28.2	57.067	–	0.55	-2.23	–
Kharchenko et al.	2013	28.282	57.01	–	0.93	0.49	–
Kharchenko et al.	2012	28.282	57.01	–	0.93	0.49	–
Piskunov et al.	2008	28.235	57.065	–	–	–	–
Piskunov et al.	2007	28.235	57.065	–	–	–	–
Kharchenko et al.	2005	28.24	57.07	–	1.47	1.18	–
Kharchenko et al.	2003	28.23	57.07	–	2.89	-0.44	–

💡 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
Li et al.	2025	1.29	0.75	–	77	-0.049	–	–	–
Almeida et al.	2025	1.28	0.84	–	66	–	258	–	–
Zhang et al.	2024	–	–	–	–	-0.123*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	475*	–	–
Cavallo et al.	2024	1.39	0.68	–	145	0.190	–	–	–
Hunt & Reffert	2023	1.29	0.62	0.51	108	–	–	–	–
Almeida et al.	2023	1.28	0.73	–	189	-0.230	415*	0.81	–
Just et al.	2023	–	–	–	398	–	31	–	–
Tarricq et al.	2022	1.28	–	–	76	–	–	–	–
Dias et al.	2021	1.28	0.84	–	66	0.024	–	–	–
Cantat-Gaudin et al.	2020	1.32	0.56	–	71	–	–	–	–
Cantat-Gaudin & Anders	2020	1.32	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.32	–	–	–	–	–	–	–
Kharchenko et al.	2016	0.90	0.16	–	398	–	–	–	–
Kharchenko et al.	2013	0.90	0.16	–	398	–	–	–	–
Kharchenko et al.	2012	0.90	0.16	–	398	–	–	–	–
Piskunov et al.	2008	1.20	0.31	–	501	–	281*	–	–
Piskunov et al.	2007	1.20	0.31	–	501	–	93	–	–
Kharchenko et al.	2005	1.20	0.31	–	501	–	–	–	–
Kharchenko et al.	2003	1.54	0.62	–	–	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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