UBC 97

0.71 UTI

0.7

C_N

1.0

C_dens

0.75

C_C3

0.55

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 91

Radius (P>50% members) 7.1 [arcmin]

C_N 0.7 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.55 Moderately studied
C_dup 1.0 Unique

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

Overview

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UBC 97 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is moderately studied in the literature.

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

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 97 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	–	274.787	-15.751	0.721	-0.858	-1.195	-17.68
Li et al.	2025	274.782	-15.722	0.736	-0.872	-1.161	–
Almeida et al.	2025	274.785	-15.743	–	–	–	–
Hunt & Reffert	2024	274.814	-15.734	0.718	-0.835	-1.212	-18.173
Cavallo et al.	2024	274.797	-15.748	0.718	–	–	–
Hunt & Reffert	2023	274.814	-15.734	0.718	-0.835	-1.212	-18.173
Dias et al.	2021	274.785	-15.743	0.728	-0.873	-1.15	–
Cantat-Gaudin et al.	2020	274.782	-15.722	0.736	-0.872	-1.161	–
Castro-Ginard et al.	2020	274.779	-15.726	0.733	-0.871	-1.146	–

💡 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
Li et al.	2025	1.28	0.94	–	374	0.246	–	–	–
Almeida et al.	2025	1.35	1.52	–	51	–	285	–	–
Hunt & Reffert	2024	–	–	–	–	–	465*	–	–
Cavallo et al.	2024	1.05	1.89	–	162	-0.750	–	–	–
Hunt & Reffert	2023	1.31	1.23	0.34	100	–	–	–	–
Tarricq et al.	2022	1.32	–	–	138	–	–	–	–
Dias et al.	2021	1.35	1.52	–	51	-0.019	–	–	–
Cantat-Gaudin et al.	2020	1.37	1.16	–	120	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LISC 3356	98.9	274.79	-15.75	0.72	-0.84	-1.19	-27.28	0.1
CWWDL 14165	94.5	274.79	-15.75	0.72	-0.85	-1.2	-27.24	0.02

💡 Note: The % column shows the percentage of members that UBC 97 shares with each listed object.

Visualization

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