UBC 636

0.36 UTI

0.0

C_N

0.31

C_dens

0.38

C_C3

0.55

C_lit

1.0

C_dup

C3 classification CB

Number of members (P>50%) 20

Radius (P>50% members) 4.0 [arcmin]

C_N 0.0 Sparse
C_dens 0.31 Loose
C_C3 0.38 Low 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 636 is a sparse, loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.

Relatively close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 636 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	–	118.853	-24.31	0.324	-1.972	1.827	56.432
Li et al.	2025	118.829	-24.32	0.324	-1.957	1.838	–
Almeida et al.	2025	118.826	-24.339	–	–	–	–
Hunt & Reffert	2024	118.823	-24.301	0.321	-1.936	1.836	56.435
Cavallo et al.	2024	118.839	-24.303	0.326	–	–	–
Hunt & Reffert	2023	118.823	-24.301	0.321	-1.936	1.836	56.435
Almeida et al.	2023	118.826	-24.336	–	–	–	–
Dias et al.	2021	118.826	-24.339	0.3	-1.964	1.83	–
Cantat-Gaudin et al.	2020	118.829	-24.32	0.324	-1.957	1.838	–
Castro-Ginard et al.	2020	118.832	-24.34	0.324	-1.953	1.831	–

💡 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	2.89	0.56	–	549	0.060	–	–	–
Almeida et al.	2025	3.00	1.22	–	48	–	202	–	–
Hunt & Reffert	2024	–	–	–	–	–	114*	–	–
Cavallo et al.	2024	2.47	0.77	–	468	0.040	–	–	–
Hunt & Reffert	2023	2.90	0.45	0.61	445	–	–	–	–
Almeida et al.	2023	2.70	0.59	–	678	-0.058	193*	0.60	–
Dias et al.	2021	3.00	1.22	–	48	-0.059	–	–	–
Cantat-Gaudin et al.	2020	2.86	0.66	–	178	–	–	–	–

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

Visualization

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