Collinder 51

(NGC 1582; MWSC 388; OCL 407; FoF 2299)

0.95 UTI

0.75

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 112

Stellar density (N₅₀/rad) 8.1 [N/pc²]

C3 classification AA

C_N 0.75 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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Collinder 51 is a rich, very dense object of very high C3 quality. Its parallax locates it at a 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 and metallicity parameters (see Parameters). It is very well-studied in the literature.

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 Collinder 51 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–	67.972	43.72	1.015	2.168	-1.388	-23.656
Li et al.	2025	67.985	43.718	0.994	2.216	-1.347	–
Almeida et al.	2025	67.982	43.711	–	–	–	–
Zhang et al.	2024	67.911	43.801	–	–	–	–
Hunt & Reffert	2024	67.911	43.801	1.012	2.164	-1.405	-20.407
Cavallo et al.	2024	67.948	43.731	1.011	–	–	–
Hunt & Reffert	2023	67.911	43.801	1.012	2.164	-1.405	-20.407
Almeida et al.	2023	67.969	43.697	–	–	–	–
Just et al.	2023	67.864	43.79	–	–	–	–
He et al.	2022	67.971	43.731	1.016	2.179	-1.399	–
Tarricq et al.	2022	68.025	43.678	1.021	2.155	-1.405	–
Dias et al.	2021	67.982	43.711	0.988	2.233	-1.347	–
Cantat-Gaudin et al.	2020	67.985	43.718	0.994	2.216	-1.347	–
Cantat-Gaudin & Anders	2020	67.985	43.718	0.994	2.216	-1.347	–
Liu & Pang	2019	67.996	43.693	0.998	2.215	-1.366	–
Bossini et al.	2019	67.985	43.718	–	–	–	–
Soubiran et al.	2018	67.985	43.718	–	–	–	18.0
Bica et al.	2019	68.013	43.87	–	–	–	–
Cantat-Gaudin et al.	2018	67.985	43.718	0.994	2.216	-1.347	–
Angelo et al.	2019	67.958	43.796	–	–	–	–
Kharchenko et al.	2016	67.864	43.79	–	–	–	–
Dias et al.	2014	67.912	43.743	–	0.22	0.13	–
Kharchenko et al.	2013	67.875	43.79	–	-1.67	-1.64	5.5
Kharchenko et al.	2012	67.875	43.79	–	-1.67	-1.64	5.53
Piskunov et al.	2008	67.882	43.795	–	–	–	–
Kharchenko et al.	2007	67.92	43.74	–	0.48	–	–
Piskunov et al.	2007	67.882	43.795	–	–	–	–
Kharchenko et al.	2005	67.89	43.8	–	1.44	-0.3	–
Kharchenko et al.	2003	67.9	43.83	–	-0.01	-2.56	–

💡 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–	0.96	0.895	0.85	234	-0.072	400	0.57	–
Li et al.	2025	0.88	1.05	–	172	-0.049	–	–	–
Almeida et al.	2025	0.94	1.24	–	196	–	400	–	–
Zhang et al.	2024	–	–	–	–	-0.117⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	589⁽¹⁾	–	–
Cavallo et al.	2024	1.03	1.22	–	98	0.320	–	–	–
Hunt & Reffert	2023	0.93	1.08	0.85	135	–	–	–	–
Almeida et al.	2023	0.94	1.28	–	154	-0.096	534⁽¹⁾	0.57	–
Just et al.	2023	–	–	–	462	–	331	–	–
He et al.	2022	–	1.35	–	79	–	–	–	–
Tarricq et al.	2022	0.97	–	–	234	–	–	–	–
Dias et al.	2021	0.94	1.24	–	196	-0.072	–	–	–
Cantat-Gaudin et al.	2020	1.00	0.82	–	234	–	–	–	–
Cantat-Gaudin & Anders	2020	0.98	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	132	-0.250	–	–	–
Bossini et al.	2019	1.01	0.97	–	262	0.000	–	–	–
Soubiran et al.	2018	0.98	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.98	–	–	–	–	–	–	–
Angelo et al.	2019	0.95	–	–	200	–	197	–	–
Kharchenko et al.	2016	1.00	0.62	–	462	–	–	–	–
Kharchenko et al.	2013	1.00	0.62	–	462	–	–	–	–
Kharchenko et al.	2012	1.00	0.62	–	462	–	–	–	–
Piskunov et al.	2008	0.60	0.68	–	398	–	416⁽¹⁾	–	–
Piskunov et al.	2007	0.60	0.68	–	398	–	144	–	–
Kharchenko et al.	2005	0.60	0.68	–	398	–	–	–	–
Kharchenko et al.	2003	0.53	0.31	–	–	–	–	–	–

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

Visualization

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