Alessi 37

(ASCC 124; MWSC 3663)

0.95 UTI

0.76

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 129

Stellar density (N₅₀/rad) 11.2 [N/pc²]

C3 classification AA

C_N 0.76 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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Alessi 37 is a rich, very dense object of very high C3 quality. Its parallax locates it at a 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.

Close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Alessi 37 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–	341.958	46.314	1.413	0.352	-1.659	-15.267
Li et al.	2025	341.961	46.342	1.384	0.351	-1.569	–
Wei et al.	2025	341.916	46.366	1.421	0.354	-1.673	–
Almeida et al.	2025	342.019	46.328	–	–	–	–
Alfonso et al.	2024	-18.107	46.39	1.354	0.333	-1.705	–
Zhang et al.	2024	341.971	46.29	–	–	–	–
Hunt & Reffert	2024	341.971	46.29	1.384	0.335	-1.643	-13.91
Cavallo et al.	2024	341.898	46.506	1.381	–	–	–
Hunt & Reffert	2023	341.971	46.29	1.384	0.335	-1.643	-13.91
Almeida et al.	2023	341.94	46.341	–	–	–	–
Just et al.	2023	341.888	46.306	–	–	–	–
He et al.	2022	341.937	46.308	1.414	0.354	-1.677	–
Tarricq et al.	2022	341.968	46.33	1.411	0.34	-1.669	–
Dias et al.	2021	342.019	46.328	1.375	0.355	-1.579	-10.602
Cantat-Gaudin et al.	2020	341.961	46.342	1.384	0.351	-1.569	–
Cantat-Gaudin & Anders	2020	341.961	46.342	1.384	0.351	-1.569	–
Bossini et al.	2019	341.942	46.337	–	–	–	–
Soubiran et al.	2018	341.961	46.342	–	–	–	-10.48
Bica et al.	2019	342.025	46.252	–	–	–	–
Cantat-Gaudin et al.	2018	341.961	46.342	1.384	0.351	-1.569	–
Loktin & Popova	2017	342.03	46.252	–	-0.82	-2.75	–
Kharchenko et al.	2016	341.888	46.306	–	–	–	–
Dias et al.	2014	342.033	46.252	–	-0.82	-2.75	–
Kharchenko et al.	2013	341.895	46.31	–	0.14	-0.78	–
Kharchenko et al.	2012	341.895	46.31	–	0.41	-0.78	–
Piskunov et al.	2008	342.026	46.252	–	–	–	–
Piskunov et al.	2007	342.026	46.252	–	–	–	–
Kharchenko et al.	2005	342.03	46.25	–	1.34	-2.41	–
Dias et al.	2002	342.033	46.252	–	-0.82	-2.75	–

💡 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–	0.7	0.54	1.15	182	0.030	309	0.355	–
Li et al.	2025	0.71	0.54	–	233	0.062	–	–	–
Wei et al.	2025	1.09	1.07	–	44	0.000	463	0.19	–
Almeida et al.	2025	0.71	0.68	–	232	–	331	–	–
Alfonso et al.	2024	0.70	0.47	–	182	0.061	–	–	–
Zhang et al.	2024	–	–	–	–	-0.065⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	331⁽¹⁾	–	–
Cavallo et al.	2024	0.73	0.58	–	204	0.340	–	–	–
Hunt & Reffert	2023	0.69	0.41	1.15	125	–	–	–	–
Almeida et al.	2023	0.70	0.65	–	261	-0.009	309⁽¹⁾	0.52	–
Just et al.	2023	–	–	–	157	–	38	–	–
He et al.	2022	–	0.80	–	79	–	–	–	–
Tarricq et al.	2022	0.68	–	–	145	–	–	–	–
Dias et al.	2021	0.71	0.68	–	232	0.063	–	–	–
Cantat-Gaudin et al.	2020	0.70	0.47	–	138	–	–	–	–
Cantat-Gaudin & Anders	2020	0.71	–	–	–	–	–	–	–
Bossini et al.	2019	0.69	0.53	–	112	0.000	–	–	–
Soubiran et al.	2018	0.71	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.71	–	–	–	–	–	–	–
Loktin & Popova	2017	0.51	0.46	–	302	–	–	–	–
Kharchenko et al.	2016	0.70	0.55	–	157	–	–	–	–
Kharchenko et al.	2013	0.70	0.55	–	157	–	–	–	–
Kharchenko et al.	2012	0.70	0.55	–	155	–	–	–	–
Piskunov et al.	2008	0.60	0.46	–	302	–	193⁽¹⁾	–	–
Piskunov et al.	2007	0.60	0.46	–	302	–	51	–	–
Kharchenko et al.	2005	0.60	0.46	–	302	–	–	–	–
Dias et al.	2002	0.60	0.46	–	302	–	–	–	–

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

Visualization

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