UBC 277

0.65 UTI

0.76

C_N

1.0

C_dens

0.75

C_C3

0.38

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 124

Radius (P>50% members) 6.7 [arcmin]

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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UBC 277 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a 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.

Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 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	–	174.036	-59.468	0.528	-6.495	1.652	-16.12
Li et al.	2025	174.042	-59.46	0.53	-6.503	1.618	–
Hunt & Reffert	2024	173.99	-59.49	0.523	-6.494	1.649	-13.711
Cavallo et al.	2024	174.063	-59.472	0.523	–	–	–
Hunt & Reffert	2023	173.99	-59.49	0.523	-6.494	1.649	-13.711
Cantat-Gaudin et al.	2020	174.042	-59.46	0.53	-6.503	1.618	–
Castro-Ginard et al.	2020	174.036	-59.465	0.528	-6.496	1.617	–

💡 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
Li et al.	2025	1.64	1.01	–	90	0.037	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	727*	–	–
Cavallo et al.	2024	1.96	1.11	–	148	0.360	–	–	–
Hunt & Reffert	2023	1.79	0.91	0.67	102	–	–	–	–
Cantat-Gaudin et al.	2020	1.84	1.05	–	102	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LISC 3241	100.0	174.03	-59.47	0.52	-6.5	1.66	-14.08	0.19
CWWDL 13971	57.3	174.04	-59.49	0.52	-6.48	1.66	-16.12	0.0

💡 Note: The % column shows the percentage of members that UBC 277 shares with each listed object.

Visualization

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