UPK 630

N_50

r_50

5.8

Summary

UPK 630 is a poorly populated, very dense object of high C3 quality. It is located at a close distance from the Sun, near the mid-plane. It is well-studied in the literature.

This object shares a large percentage of members with a later reported entry.

Search object in SciX | Simbad

Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Sim et al. (2019)	249.187	-51.295	–	-1.75	-2.3	–
Cantat-Gaudin et al. (2020)	249.193	-51.304	1.047	-1.76	-2.289	–
Dias et al. (2021)	249.19	-51.323	1.055	-1.768	-2.291	–
He et al. (2022)	249.13	-51.287	1.091	-1.814	-2.254	–
Hunt & Reffert (2023)	249.174	-51.265	1.069	-1.818	-2.311	-2.23
Cavallo et al. (2024)	249.188	-51.318	1.079	–	–	–
Hunt & Reffert (2024)	249.174	-51.265	1.069	-1.818	-2.311	-2.23
Alfonso et al. (2024)	249.265	-51.251	1.045	-1.746	-2.315	–
Almeida et al. (2025)	249.19	-51.323	–	–	–	–

UCC	249.188	-51.282	1.078	-1.805	-2.28	-1.025

Galactocentric position

How are the galactocentric plots generated?

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Estimated members

1 2 3

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Fundamental parameters

Reference	Values
Sim et al. (2019)	`d_pc=931, log(age)=7.85`
Cantat-Gaudin et al. (2020)	`AVNN=0.25, DistPc=892.0, AgeNN=8.05`
Dias et al. (2021)	`Av=0.57, Dist=896, logage=8.052, [Fe/H]=0.192`
Tarricq et al. (2022)	`Dist=869, logAgeNN=8.07`
He et al. (2022)	`A0=0.65, logAge=7.95`
Hunt & Reffert (2023)	`AV50=0.551, diffAV50=0.766, MOD50=9.744, logAge50=7.984`
Cavallo et al. (2024)	`AV50=0.78, dMod50=9.78, logAge50=7.63, [Fe/H]50=0.12`
Hunt & Reffert (2024)	`MassJ=167.999, MassTot=167.999`
Alfonso et al. (2024)	`AV=0.25031, MOD=9.74957, logAge=7.92825, Z=0.19239`
Almeida et al. (2025)	`AV=0.57, Dist=896, logAge=8.052, MassRk=125.3`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

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