UBC 509

0.04 UTI

0.27

C_N

0.96

C_dens

0.75

C_C3

0.3

C_lit

0.07

C_dup

N₅₀ (P>50% members) 27

Stellar density (N₅₀/rad) 4.8 [N/pc²]

C3 classification AB

C_N 0.27 Poorly populated
C_dens 0.96 Very dense
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 0.07 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 509 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Distant Low extinction Near-solar metallicity Intermediate age

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

Data

🔍 Search references for UBC 509 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–	164.118	-61.095	0.307	-6.574	2.411	–
Li et al.	2025	164.064	-61.089	0.287	-6.586	2.363	–
Almeida et al.	2025	164.051	-61.096	–	–	–	–
Dias et al.	2021	164.051	-61.096	0.296	-6.568	2.358	–
Cantat-Gaudin et al.	2020	164.064	-61.089	0.287	-6.586	2.363	–
Castro-Ginard et al.	2020	164.048	-61.082	0.287	-6.571	2.373	–

💡 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–	3.24	0.85	–	193	0.258	372	–	–
Li et al.	2025	3.14	0.79	–	78	0.263	–	–	–
Almeida et al.	2025	3.24	0.91	–	193	–	372	–	–
Dias et al.	2021	3.24	0.91	–	193	0.253	–	–	–
Cantat-Gaudin et al.	2020	3.42	0.57	–	589	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Collinder 236	92.6	164.12	-61.1	0.31	-6.56	2.43	2.41	0.76

💡 Note: The % column shows the percentage of members that UBC 509 shares with each listed object.

Visualization

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