UBC 448

0.42 UTI

0.52

C_N

0.33

C_dens

0.75

C_C3

0.26

C_lit

1.0

C_dup

N_m (P>50%) 55

Core radius and density 2.5 [pc], 1.7 [pc^-2]

C3 classification AB

C_N 0.52 Moderately populated
C_dens 0.33 Loose
C_C3 0.75 High quality
C_lit 0.26 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 448 is a moderately populated, loose object of high 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 metallicity parameter (see Parameters). It is poorly studied in the literature.

Relatively close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for UBC 448 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–	113.508	-8.081	0.307	-1.435	0.557	69.867
Li et al.	2025	113.508	-8.089	0.304	-1.429	0.568	–
Almeida et al.	2025	113.519	-8.08	–	–	–	–
Hunt & Reffert	2024	113.517	-8.073	0.297	-1.427	0.539	69.862
Cavallo et al.	2024	113.507	-8.081	0.296	–	–	–
Hunt & Reffert	2023	113.517	-8.073	0.297	-1.427	0.539	69.862
Almeida et al.	2023	113.521	-8.08	–	–	–	–
Dias et al.	2021	113.519	-8.08	0.269	-1.396	0.583	–
Cantat-Gaudin et al.	2020	113.508	-8.089	0.304	-1.429	0.568	–
Castro-Ginard et al.	2020	113.52	-8.08	0.3	-1.406	0.577	–

💡 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–	2.99	0.45	0.865	382	-0.143	348	0.44	–
Li et al.	2025	4.56	0.45	–	756	0.018	–	–	–
Almeida et al.	2025	2.99	0.58	–	382	–	348	–	–
Hunt & Reffert	2024	2.98	0.26	0.87	365	–	177⁽¹⁾	–	–
Cavallo et al.	2024	2.74	0.87	–	468	-0.570	–	–	–
Hunt & Reffert	2023	2.98	0.26	0.86	365	–	–	–	–
Almeida et al.	2023	2.92	0.38	–	834	-0.189	830⁽¹⁾	0.44	–
Dias et al.	2021	2.99	0.58	–	382	-0.097	–	–	–
Cantat-Gaudin et al.	2020	3.15	0.30	–	288	–	–	–	–
Kounkel et al.	2020	3.30	0.52	–	123	–	–	–	–

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

Visualization

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