UPK 50

N_50

r_50

14.0

Summary

UPK 50 is a moderately populated, very dense object of very high C3 quality. It is located at a relatively close distance from the Sun, above the mid-plane. It is well-studied in the literature.

This object shares a large percentage of members with 2 later reported entries.

Search object in SciX | Simbad

Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Sim et al. (2019)	283.274	8.171	–	-1.33	-3.79	–
Cantat-Gaudin et al. (2020)	283.309	8.172	0.97	-1.315	-3.817	–
Dias et al. (2021)	283.272	8.194	0.97	-1.309	-3.803	–
Tarricq et al. (2022)	283.293	8.108	0.995	-1.325	-3.793	–
He et al. (2022)	283.268	8.195	0.997	-1.317	-3.776	–
Hunt & Reffert (2023)	283.299	8.197	0.973	-1.321	-3.796	-4.239
Cavallo et al. (2024)	283.3	8.181	0.975	–	–	–
Hunt & Reffert (2024)	283.299	8.197	0.973	-1.321	-3.796	-4.239
Almeida et al. (2025)	283.272	8.194	–	–	–	–

UCC	283.31	8.145	0.977	-1.316	-3.805	-3.885

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=995, log(age)=8.7`
Cantat-Gaudin et al. (2020)	`AVNN=1.07, DistPc=1003.0, AgeNN=8.34`
Dias et al. (2021)	`Av=1.399, Dist=988, logage=8.401, [Fe/H]=0.05`
Tarricq et al. (2022)	`Dist=970, logAgeNN=8.37`
He et al. (2022)	`A0=1.45, logAge=8.15`
Hunt & Reffert (2023)	`AV50=1.317, diffAV50=1.182, MOD50=9.946, logAge50=8.216`
Cavallo et al. (2024)	`AV50=1.29, dMod50=10.23, logAge50=8.55, [Fe/H]50=0.6`
Hunt & Reffert (2024)	`MassJ=342.629, MassTot=345.514`
Almeida et al. (2025)	`AV=1.399, Dist=988, logAge=8.401, MassRk=359.4`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 358	100.0	283.31	8.13	0.97	-1.32	-3.81	-3.89	0.1
CWWDL 14442	77.4	283.32	8.18	0.98	-1.32	-3.81	-2.6	0.01