UBC 49

0.55 UTI

0.76

C_N

0.73

C_dens

0.75

C_C3

0.26

C_lit

1.0

C_dup

N_m (P>50%) 139

Core radius and density 1.8 [pc], 3.7 [pc^-2]

C3 classification AB

C_N 0.76 Rich
C_dens 0.73 Moderately dense
C_C3 0.75 High quality
C_lit 0.26 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 49 is a rich, moderately 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 near-solar metallicity, old 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 contains blue stragglers according to at least one source.

Note: This object shares a large percentage of members with 3 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Old Contains BSS

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.4655, e_all=0.4447.

Data

🔍 Search references for UBC 49 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–	60.217	59.192	0.384	-1.821	-1.376	-14.679
Li et al.	2025	60.217	59.198	0.344	-1.786	-1.302	–
Hu & Soubiran	2025	60.224	59.186	–	–	–	–
Hunt & Reffert	2024	60.22	59.197	0.378	-1.807	-1.377	-18.245
Cavallo et al.	2024	60.224	59.186	0.382	–	–	–
Hunt & Reffert	2023	60.22	59.197	0.378	-1.807	-1.377	-18.245
Jadhav & Subramaniam	2021	60.217	59.198	–	–	–	–
Cantat-Gaudin et al.	2020	60.217	59.198	0.344	-1.786	-1.302	–
Cantat-Gaudin & Anders	2020	60.217	59.198	0.344	-1.786	-1.302	–
Castro-Ginard et al.	2019	60.218	59.192	0.337	-1.766	-1.326	–

💡 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–	2.52	2.25	1.29	1230	-0.020	858	–	2
Li et al.	2025	2.26	2.41	–	1724	-0.358	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.020⁽⁵⁾	–	–	–
Hunt & Reffert	2024	2.36	2.25	1.29	1029	–	850⁽¹⁾	–	–
Cavallo et al.	2024	2.31	2.33	–	1230	0.070	–	–	–
Hunt & Reffert	2023	2.36	2.25	1.29	1028	–	–	–	–
Jadhav & Subramaniam	2021	2.78	1.84	–	2630	–	866	–	2⁽¹⁾
Cantat-Gaudin et al.	2020	2.78	1.84	–	2630	–	–	–	–
Kounkel et al.	2020	2.86	2.67	–	513	–	–	–	–
Cantat-Gaudin & Anders	2020	2.68	–	–	–	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv
LISC 3058	79.9	60.21	59.19	0.38	-1.82	-1.38	-14.68
CWWDL 3133	33.1	60.23	59.2	0.37	-1.83	-1.38	-14.68
OC 0269	25.9	60.23	59.2	0.38	-1.82	-1.38	-14.68

💡 Note: The % column shows the percentage of members that UBC 49 shares with each listed object.

Visualization

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