UBC 1073

0.63 UTI

0.77

C_N

0.74

C_dens

1.0

C_C3

0.31

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 142

Radius (P>50% members) 5.4 [arcmin]

C_N 0.77 Rich
C_dens 0.74 Moderately dense
C_C3 1.0 Very high quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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UBC 1073 is a rich, moderately dense object of very high C3 quality. Its parallax locates it at a moderate 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 age parameter (see Parameters). It is poorly studied in the literature.

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

Distant Moderate extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 1073 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	–	298.259	30.821	0.253	-1.759	-3.045	-24.153
Hu & Soubiran	2025	298.258	30.831	–	–	–	–
Hunt & Reffert	2024	298.265	30.807	0.252	-1.772	-3.045	-20.34
Cavallo et al.	2024	298.258	30.831	0.253	–	–	–
Hunt & Reffert	2023	298.265	30.807	0.252	-1.772	-3.045	-20.34
Castro-Ginard et al.	2022	298.25	30.81	0.25	-1.77	-3.04	-25.62

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.080*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1289*	–	–
Cavallo et al.	2024	2.82	2.31	–	794	-0.060	–	–	–
Hunt & Reffert	2023	3.57	2.43	1.81	212	–	–	–	–
Castro-Ginard et al.	2022	3.68	1.59	–	682	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 319	72.5	298.26	30.83	0.25	-1.76	-3.05	-24.74	0.0

💡 Note: The % column shows the percentage of members that UBC 1073 shares with each listed object.

Visualization

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