UBC 177

0.53 UTI

0.56

C_N

0.56

C_dens

0.75

C_C3

0.4

C_lit

1.0

C_dup

N₅₀ (P>50% members) 63

Stellar density (N₅₀/rad) 2.8 [N/pc²]

C3 classification AB

C_N 0.56 Moderately populated
C_dens 0.56 Moderately dense
C_C3 0.75 High quality
C_lit 0.4 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 177 is a moderately populated, moderately 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, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

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

Data

🔍 Search references for UBC 177 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–	339.717	67.055	0.861	-1.935	-1.038	-194.993
Almeida et al.	2025	339.647	67.057	–	–	–	–
Celli et al.	2024	339.659	67.044	–	–	–	–
Almeida et al.	2023	339.721	67.063	–	–	–	–
He et al.	2022	339.726	67.043	0.871	-1.931	-1.054	–
Dias et al.	2021	339.647	67.057	0.857	-1.945	-0.994	–
Cantat-Gaudin et al.	2020	339.659	67.044	0.855	-1.973	-0.973	–
Castro-Ginard et al.	2020	339.611	67.036	0.854	-1.938	-0.974	–

💡 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–	1.15	2.04	–	26	0.177	191	0.72	–
Almeida et al.	2025	1.15	2.04	–	21	–	262	–	–
Celli et al.	2024	–	–	–	28	–	184	–	–
Almeida et al.	2023	1.08	2.22	–	126	0.103	191⁽¹⁾	0.72	–
He et al.	2022	–	2.65	–	25	–	–	–	–
Dias et al.	2021	1.15	2.04	–	21	0.252	–	–	–
Cantat-Gaudin et al.	2020	1.15	1.99	–	28	–	–	–	–

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

Visualization

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