UBC 1505

0.37 UTI

0.72

C_N

0.2

C_dens

0.75

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 95

Core radius and density 3.5 [pc], 1.0 [pc^-2]

C3 classification AB

C_N 0.72 Moderately populated
C_dens 0.2 Very loose
C_C3 0.75 High quality
C_lit 0.1 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 1505 is a moderately populated, very loose object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.

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

Distant Moderate extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.85 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.85 (50th percentile).

Data

🔍 Search references for UBC 1505 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–	175.991	-60.532	0.169	-7.882	1.765	2.795
Hu & Soubiran	2025	175.979	-60.538	–	–	–	–
Hunt & Reffert	2024	176.014	-60.546	0.171	-7.86	1.774	-7.254
Cavallo et al.	2024	175.979	-60.538	0.174	–	–	–
Hunt & Reffert	2023	176.014	-60.546	0.171	-7.86	1.774	-7.254
Castro-Ginard et al.	2022	175.99	-60.55	0.16	-7.87	1.77	–

💡 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–	4.975	2.15	1.58	767	-0.130	1250	–	–
Hu & Soubiran	2025	–	–	–	–	-0.280⁽⁵⁾	–	–	–
Hunt & Reffert	2024	4.97	2.15	1.58	586	–	1250⁽¹⁾	–	–
Cavallo et al.	2024	3.42	2.18	–	1000	0.020	–	–	–
Hunt & Reffert	2023	4.98	2.15	1.58	586	–	–	–	–
Castro-Ginard et al.	2022	5.92	1.62	–	948	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CKCWDM 48869	68.4	175.98	-60.53	0.18	-7.87	1.76	-4.19	0.03
HSC 2450	13.7	175.96	-60.51	0.27	-7.91	1.78	–	0.05

💡 Note: The % column shows the percentage of members that UBC 1505 shares with each listed object.

Visualization

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