Stock 1

(MWSC 3140; OCL 127; OCSN 264)

0.96 UTI

0.81

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 266

Stellar density (N₅₀/rad) 11.9 [N/pc²]

C3 classification AA

C_N 0.81 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Stock 1 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near 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.

Very close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Stock 1 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–	294.112	25.099	2.459	6.057	0.213	-19.193
Li et al.	2025	294.146	25.163	2.447	6.034	0.302	–
Wei et al.	2025	294.156	25.208	2.462	6.05	0.228	–
Almeida et al.	2025	294.208	25.279	–	–	–	–
Alfonso et al.	2024	294.112	25.09	2.43	6.058	0.202	–
Zhang et al.	2024	293.985	25.188	–	–	–	–
Hunt & Reffert	2024	293.985	25.188	2.459	6.061	0.218	-19.265
Cavallo et al.	2024	294.16	25.137	2.457	–	–	–
Hunt & Reffert	2023	293.985	25.188	2.459	6.061	0.218	-19.265
Almeida et al.	2023	294.101	25.213	–	–	–	–
Qin et al.	2023	294.11	25.13	2.45	6.0	0.16	-19.23
Just et al.	2023	293.95	25.172	–	–	–	–
He et al.	2022	294.115	25.088	2.457	6.059	0.195	–
Tarricq et al.	2022	293.977	25.121	2.478	6.061	0.215	–
Jaehnig et al.	2021	294.11	25.059	2.473	6.069	0.235	–
Rain et al.	2021	294.146	25.163	2.447	6.034	0.302	–
Dias et al.	2021	294.208	25.279	2.446	6.031	0.299	-19.334
Cantat-Gaudin et al.	2020	294.146	25.163	2.447	6.034	0.302	–
Cantat-Gaudin & Anders	2020	294.146	25.163	2.447	6.034	0.302	–
Bossini et al.	2019	294.146	25.163	–	–	–	–
Soubiran et al.	2018	294.146	25.163	–	–	–	-19.51
Bica et al.	2019	293.953	25.207	–	–	–	–
Cantat-Gaudin et al.	2018	294.146	25.163	2.447	6.034	0.302	–
Loktin & Popova	2017	293.955	25.217	–	-1.89	-3.85	–
Kharchenko et al.	2016	293.95	25.172	–	–	–	–
Dias et al.	2014	293.95	25.217	–	-1.86	-3.7	–
Kharchenko et al.	2013	293.955	25.175	–	5.65	0.72	–
Piskunov et al.	2008	293.949	25.221	–	–	–	–
Piskunov et al.	2007	293.949	25.221	–	–	–	–
van den Bergh	2006	293.95	25.217	–	–	–	–
Kharchenko et al.	2005	293.95	25.22	–	5.74	1.11	–
Kharchenko et al.	2003	293.94	25.17	–	5.72	1.44	–
Dias et al.	2002	293.95	25.217	–	5.72	1.44	–

💡 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]	B_frac	BSS
UCC	99999–	0.395	0.46	0.53	347	0.056	154	0.535	0.0
Li et al.	2025	0.38	0.30	–	595	0.053	–	–	–
Wei et al.	2025	0.41	0.63	–	148	0.000	222	0.44	–
Almeida et al.	2025	0.40	0.27	–	520	–	154	–	–
Alfonso et al.	2024	0.42	0.39	–	383	0.285	–	–	–
Zhang et al.	2024	–	–	–	–	-0.017⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	317⁽¹⁾	–	–
Cavallo et al.	2024	0.40	0.86	–	141	0.070	–	–	–
Hunt & Reffert	2023	0.38	0.34	0.53	258	–	–	–	–
Almeida et al.	2023	0.39	0.33	–	541	0.059	346⁽¹⁾	0.63	–
Qin et al.	2023	0.40	0.25	–	631	–	–	–	–
Just et al.	2023	–	–	–	347	–	11	–	–
He et al.	2022	–	0.90	–	79	–	–	–	–
Tarricq et al.	2022	0.41	–	–	437	–	–	–	–
Jaehnig et al.	2021	0.40⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	0.40	0.37	–	468	–	–	–	0
Dias et al.	2021	0.40	0.27	–	520	0.286	–	–	–
Cantat-Gaudin et al.	2020	0.42	0.39	–	417	–	–	–	–
Cantat-Gaudin & Anders	2020	0.40	–	–	–	–	–	–	–
Bossini et al.	2019	0.38	0.39	–	474	0.000	–	–	–
Soubiran et al.	2018	0.40	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.40	–	–	–	–	–	–	–
Loktin & Popova	2017	0.37	0.48	–	324	–	–	–	–
Kharchenko et al.	2016	0.35	0.53	–	347	–	–	–	–
Kharchenko et al.	2013	0.35	0.53	–	347	–	–	–	–
Piskunov et al.	2008	0.35	0.53	–	339	–	38⁽¹⁾	–	–
Piskunov et al.	2007	0.35	0.53	–	339	–	10	–	–
van den Bergh	2006	0.32	0.46	–	–	–	–	–	–
Kharchenko et al.	2005	0.35	0.53	–	339	–	–	–	–
Kharchenko et al.	2003	0.32	0.46	–	–	–	–	–	–
Dias et al.	2002	0.32	0.50	–	302	–	–	–	–

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

Visualization

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