UBC 1105

0.11 UTI

0.36

C_N

0.25

C_dens

1.0

C_C3

0.06

C_lit

0.31

C_dup

N_m (P>50%) 36

Core radius and density 1.4 [pc], 1.2 [pc^-2]

C3 classification AA

C_N 0.36 Poorly populated
C_dens 0.25 Loose
C_C3 1.0 Very high quality
C_lit 0.06 Rarely studied
C_dup 0.31 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 1105 is a poorly populated, loose object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is rarely studied in the literature.

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

Relatively close High extinction Near-solar metallicity Very young

Palma et al. (2025)
Part of multiple system G79, along with FSR_0224 and UBC_1103.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.57 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.57 (50th percentile).

Data

🔍 Search references for UBC 1105 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–	306.888	39.374	0.581	-2.228	-4.981	40.272
Hunt & Reffert	2024	306.913	39.343	0.577	-2.249	-4.975	58.764
Cavallo et al.	2024	306.816	39.395	0.578	–	–	–
Hunt & Reffert	2023	306.913	39.343	0.577	-2.249	-4.975	58.764
Castro-Ginard et al.	2022	306.85	39.39	0.58	-2.22	-4.97	–

💡 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–	1.78	4.54	2.81	8	0.440	821	–	–
Hunt & Reffert	2024	1.67	4.82	2.81	6	–	821⁽¹⁾	–	–
Cavallo et al.	2024	1.89	4.26	–	13	0.440	–	–	–
Hunt & Reffert	2023	1.67	4.82	2.81	6	–	–	–	–
Castro-Ginard et al.	2022	1.91	3.99	–	9	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
DB2001 7	69.4	306.86	39.41	0.58	-2.23	-4.98	10.87	0.31

💡 Note: The % column shows the percentage of members that UBC 1105 shares with each listed object.

Visualization

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