CWNU 37

0.50 UTI

0.38

C_N

1.0

C_dens

0.5

C_C3

0.31

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 38

Radius (P>50% members) 3.6 [arcmin]

C_N 0.38 Poorly populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

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CWNU 37 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~2.11 kpc) differs significantly from the median photometric distance (~1.55 kpc).

Relatively close High extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 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	–	276.734	-12.49	0.474	0.859	0.867	14.521
Hu & Soubiran	2025	276.725	-12.516	–	–	–	–
Hunt & Reffert	2024	276.714	-12.48	0.462	0.853	0.848	13.695
Cavallo et al.	2024	276.725	-12.516	0.462	–	–	–
Hunt & Reffert	2023	276.714	-12.48	0.462	0.853	0.848	13.695
He et al.	2022	276.73	-12.515	0.47	0.88	0.9	–

💡 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
Hu & Soubiran	2025	–	–	–	–	-0.220*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1006*	–	–
Cavallo et al.	2024	1.53	3.91	–	851	-0.700	–	–	–
Hunt & Reffert	2023	2.03	3.83	2.34	260	–	–	–	–
He et al.	2022	1.55	2.34	–	2512	0.916	–	–	–

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

Visualization

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