Stock 3

(MWSC 108; OCL 318)

0.27 UTI

0.26

C_N

0.05

C_dens

0.25

C_C3

0.39

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 3.3 [pc], 0.2 [pc^-2]

C3 classification CC

C_N 0.26 Poorly populated
C_dens 0.05 Very loose
C_C3 0.25 Low quality
C_lit 0.39 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Stock 3 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.39 kpc) differs significantly from the median photometric distance (~1.36 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 Moderate extinction Near-solar metallicity Young

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

Data

🔍 Search references for Stock 3 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	18.049	62.298	0.295	-1.86	-0.372	-61.365
Almeida et al.	2025	18.059	62.319	–	–	–	–
Just et al.	2023	18.027	62.255	–	–	–	–
Dias et al.	2021	18.059	62.319	0.265	-1.895	-0.357	–
Bica et al.	2019	18.0	62.286	–	–	–	–
Dias et al.	2018	–	–	–	-2.37	-0.07	–
Dib et al.	2018	18.037	62.258	–	–	–	–
Sampedro et al.	2017	18.075	62.333	–	-1.96	1.68	–
Joshi et al.	2016	18.037	62.258	–	–	–	–
Kharchenko et al.	2016	18.027	62.255	–	–	–	–
Dias et al.	2014	18.075	62.333	–	-1.94	1.54	–
Kharchenko et al.	2013	18.037	62.258	–	-0.13	-0.64	-6.0
Kharchenko et al.	2012	18.037	62.258	–	-0.13	-0.64	-6.0
Dias et al.	2002	18.075	62.333	–	-0.94	1.82	-6.0
Lynga	1987	18.073	62.334	–	–	–	–

💡 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–	1.36	2.23	–	71	-0.100	278	–	–
Almeida et al.	2025	2.75	2.35	–	17	–	498	–	–
Just et al.	2023	–	–	–	71	–	57	–	–
Dias et al.	2021	2.75	2.35	–	17	-0.100	–	–	–
Dib et al.	2018	1.36	–	–	71	–	–	–	–
Joshi et al.	2016	1.36	2.23	–	71	–	–	–	–
Kharchenko et al.	2016	1.36	2.23	–	71	–	–	–	–
Kharchenko et al.	2013	1.36	2.23	–	71	–	–	–	–
Kharchenko et al.	2012	1.36	2.23	–	71	–	–	–	–
Dias et al.	2002	1.36	2.23	–	71	–	–	–	–

Visualization

ℹ️