UPK 457

0.55 UTI

0.29

C_N

0.83

C_dens

0.62

C_C3

0.5

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 29

Radius (P>50% members) 9.3 [arcmin]

C_N 0.29 Poorly populated
C_dens 0.83 Dense
C_C3 0.62 Intermediate quality
C_lit 0.5 Moderately studied
C_dup 1.0 Unique

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

Overview

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UPK 457 is a poorly populated, dense object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is moderately studied in the literature.

Close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for UPK 457 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	–	104.478	-18.724	1.022	-3.837	5.128	38.009
Almeida et al.	2025	104.456	-18.705	–	–	–	–
Hunt & Reffert	2024	104.484	-18.665	0.988	-3.826	5.161	40.32
Cavallo et al.	2024	104.51	-18.621	0.991	–	–	–
Hunt & Reffert	2023	104.484	-18.665	0.988	-3.826	5.161	40.32
Dias et al.	2021	104.456	-18.705	1.006	-3.82	5.147	–
Cantat-Gaudin et al.	2020	104.482	-18.741	1.02	-3.839	5.173	–
Cantat-Gaudin & Anders	2020	104.471	-18.728	1.025	-3.81	5.137	–
Sim et al.	2019	104.474	-18.738	–	-3.81	5.14	–

💡 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
Almeida et al.	2025	0.96	0.44	–	22	–	67	–	–
Hunt & Reffert	2024	–	–	–	–	–	57*	–	–
Cavallo et al.	2024	1.19	0.75	–	16	-0.080	–	–	–
Hunt & Reffert	2023	0.94	0.31	0.97	16	–	–	–	–
Dias et al.	2021	0.96	0.44	–	22	0.064	–	–	–
Cantat-Gaudin & Anders	2020	0.95	–	–	–	–	–	–	–
Sim et al.	2019	0.95	–	–	25	–	–	–	–

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

Visualization

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