CWNU 277

0.47 UTI

0.0

C_N

1.0

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 10.3 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 277 is a sparse, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a very metal-poor, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

Relatively close Moderate extinction Very metal-poor Intermediate age

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 118 along with CWNU_2664.

Palma et al. (2025)
Part of multiple system G59, along with HSC_2552, CWNU_2692, NGC_4755, Ruprecht_105 and CWNU_2664.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 277 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–	192.232	-60.572	0.467	-4.127	0.104	–
Hunt & Reffert	2024	192.21	-60.576	0.471	-4.125	0.112	–
Cavallo et al.	2024	192.238	-60.586	0.47	–	–	–
Hunt & Reffert	2023	192.21	-60.576	0.471	-4.125	0.112	–
He et al.	2022	192.201	-60.565	0.47	-4.13	0.11	–

💡 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–	1.92	1.24	0.64	126	-1.019	174	–	–
Liu et al.	2025	3.48	0.45	–	182	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	174⁽¹⁾	–	–
Cavallo et al.	2024	1.87	1.43	–	76	-0.010	–	–	–
Hunt & Reffert	2023	1.97	1.05	0.64	176	–	–	–	–
He et al.	2022	1.51	1.50	–	32	-2.028	–	–	–

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

Visualization

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