UPK 220

N_50

r_50

313

13.3

Summary

UPK 220 is a rich, very dense object of very high C3 quality. It is located at a close distance from the Sun, above the mid-plane. It is moderately 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)	350.973	66.502	–	-2.41	-2.59	–
Cantat-Gaudin et al. (2020)	350.955	66.505	1.009	-2.416	-2.584	–
Dias et al. (2021)	350.988	66.509	1.008	-2.414	-2.592	-7.194
Tarricq et al. (2022)	350.961	66.487	1.023	-2.388	-2.685	–
He et al. (2022)	350.996	66.517	1.033	-2.419	-2.644	–
Hunt & Reffert (2023)	350.954	66.462	1.032	-2.391	-2.655	-2.191
Cavallo et al. (2024)	350.932	66.503	1.03	–	–	–
Hunt & Reffert (2024)	350.954	66.462	1.032	-2.391	-2.655	-2.191
Alfonso et al. (2024)	-9.063	66.483	1.003	-2.407	-2.626	–
Almeida et al. (2025)	350.988	66.509	–	–	–	–

UCC	350.954	66.505	1.03	-2.4	-2.649	-6.177

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=967, log(age)=8.75`
Cantat-Gaudin et al. (2020)	`AVNN=2.16, DistPc=990.0, AgeNN=8.04`
Dias et al. (2021)	`Av=2.731, Dist=950, logage=7.295, [Fe/H]=0.029`
Tarricq et al. (2022)	`Dist=964, logAgeNN=8.08`
He et al. (2022)	`A0=3.3, logAge=8.05`
Hunt & Reffert (2023)	`AV50=2.959, diffAV50=2.758, MOD50=9.858, logAge50=7.749`
Cavallo et al. (2024)	`AV50=2.96, dMod50=10.17, logAge50=7.93, [Fe/H]50=0.63`
Hunt & Reffert (2024)	`MassJ=1283.64, MassTot=1360.94`
Alfonso et al. (2024)	`AV=2.15941, MOD=9.98014, logAge=7.72161, Z=0.02880`
Almeida et al. (2025)	`AV=2.731, Dist=950, logAge=7.295, MassRk=590.7`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 402	83.1	350.95	66.51	1.03	-2.4	-2.65	-5.75	0.0