UBC 1103

0.60 UTI

0.75

C_N

0.67

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 103

Stellar density (N₅₀/rad) 3.3 [N/pc²]

C3 classification AA

C_N 0.75 Rich
C_dens 0.67 Moderately dense
C_C3 1.0 Very high quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

UBC 1103 is a rich, moderately dense 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, young cluster (see Parameters). It is poorly studied in the literature.

Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.

Relatively close High extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G79, along with UBC_1105 and FSR_0224.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 1103 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	306.903	38.793	0.597	-0.212	-2.833	-12.887
Zhang et al.	2024	306.923	38.866	–	–	–	–
Hunt & Reffert	2024	306.923	38.866	0.593	-0.222	-2.841	15.368
Cavallo et al.	2024	306.876	38.774	0.595	–	–	–
Hunt & Reffert	2023	306.923	38.866	0.593	-0.222	-2.841	15.368
Castro-Ginard et al.	2022	306.87	38.76	0.6	-0.21	-2.84	–

💡 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–	1.6	3.59	2.66	27	0.215	901	–	–
Zhang et al.	2024	–	–	–	–	0.121⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	901⁽¹⁾	–	–
Cavallo et al.	2024	1.57	3.59	–	18	0.310	–	–	–
Hunt & Reffert	2023	1.60	3.59	2.66	27	–	–	–	–
Castro-Ginard et al.	2022	1.75	2.65	–	31	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0117	24.3	306.9	38.87	0.59	-0.2	-2.83	38.3	0.0

💡 Note: The % column shows the percentage of members that UBC 1103 shares with each listed object.

Visualization

ℹ️

1 2