UPK 630

0.73 UTI

0.49

C_N

1.0

C_dens

0.75

C_C3

0.7

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 49

Radius (P>50% members) 5.8 [arcmin]

C_N 0.49 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.7 Moderately studied
C_dup 1.0 Unique

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

Overview

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UPK 630 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a close distance, near 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.

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

Close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UPK 630 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	–	249.188	-51.282	1.078	-1.805	-2.28	-1.025
Li et al.	2025	249.193	-51.304	1.047	-1.76	-2.289	–
Almeida et al.	2025	249.19	-51.323	–	–	–	–
Alfonso et al.	2024	249.265	-51.251	1.045	-1.746	-2.315	–
Hunt & Reffert	2024	249.174	-51.265	1.069	-1.818	-2.311	-2.23
Cavallo et al.	2024	249.188	-51.318	1.079	–	–	–
Hunt & Reffert	2023	249.174	-51.265	1.069	-1.818	-2.311	-2.23
He et al.	2022	249.13	-51.287	1.091	-1.814	-2.254	–
Dias et al.	2021	249.19	-51.323	1.055	-1.768	-2.291	–
Cantat-Gaudin et al.	2020	249.193	-51.304	1.047	-1.76	-2.289	–
Cantat-Gaudin & Anders	2020	249.182	-51.303	1.047	-1.763	-2.294	–
Sim et al.	2019	249.187	-51.295	–	-1.75	-2.3	–

💡 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	0.87	0.58	–	44	0.071	–	–	–
Almeida et al.	2025	0.90	0.57	–	113	–	125	–	–
Alfonso et al.	2024	0.89	0.25	–	85	0.192	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	168*	–	–
Cavallo et al.	2024	0.90	0.78	–	43	0.120	–	–	–
Hunt & Reffert	2023	0.89	0.55	0.77	96	–	–	–	–
He et al.	2022	–	0.65	–	89	–	–	–	–
Tarricq et al.	2022	0.87	–	–	117	–	–	–	–
Dias et al.	2021	0.90	0.57	–	113	0.192	–	–	–
Cantat-Gaudin et al.	2020	0.89	0.25	–	112	–	–	–	–
Cantat-Gaudin & Anders	2020	0.93	–	–	–	–	–	–	–
Sim et al.	2019	0.93	–	–	71	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 544	98.0	249.18	-51.29	1.08	-1.83	-2.29	-0.55	0.06

💡 Note: The % column shows the percentage of members that UPK 630 shares with each listed object.

Visualization

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