UPK 42

N_50

r_50

148

15.4

Summary

UPK 42 is a rich, very dense object of very high C3 quality. It is located at a close distance from the Sun, below 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)	293.92	-3.643	–	-0.46	-5.03	–
Cantat-Gaudin et al. (2020)	293.908	-3.653	1.657	-0.452	-5.002	–
Dias et al. (2021)	293.926	-3.666	1.663	-0.44	-5.0	–
Tarricq et al. (2022)	293.91	-3.614	1.682	-0.449	-5.056	–
He et al. (2022)	293.922	-3.665	1.692	-0.431	-5.03	–
Hunt & Reffert (2023)	293.918	-3.666	1.687	-0.425	-5.022	7.423
Cavallo et al. (2024)	293.928	-3.644	1.687	–	–	–
Hunt & Reffert (2024)	293.918	-3.666	1.687	-0.425	-5.022	7.423
Alfonso et al. (2024)	293.926	-3.652	1.648	-0.43	-5.038	–
Almeida et al. (2025)	293.926	-3.666	–	–	–	–

UCC	293.933	-3.652	1.691	-0.449	-5.023	3.984

Galactocentric position

How are the galactocentric plots generated?

Search coordinates in CDS | Simbad

Estimated members

1 2 3

Explore data in Colab

Fundamental parameters

Reference	Values
Sim et al. (2019)	`d_pc=592, log(age)=8.75`
Cantat-Gaudin et al. (2020)	`AVNN=1.06, DistPc=595.0, AgeNN=8.32`
Dias et al. (2021)	`Av=1.675, Dist=587, logage=8.059, [Fe/H]=-0.036`
Tarricq et al. (2022)	`Dist=586, logAgeNN=8.36`
He et al. (2022)	`A0=1.95, logAge=7.75`
Hunt & Reffert (2023)	`AV50=1.56, diffAV50=1.771, MOD50=8.756, logAge50=8.296`
Cavallo et al. (2024)	`AV50=1.57, dMod50=8.9, logAge50=8.27, [Fe/H]50=0.09`
Hunt & Reffert (2024)	`MassJ=291.799, MassTot=355.558`
Alfonso et al. (2024)	`AV=1.05967, MOD=8.87988, logAge=8.79095, Z=-0.0359`
Almeida et al. (2025)	`AV=1.675, Dist=587, logAge=8.059, MassRk=265.7`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 115	100.0	293.93	-3.65	1.68	-0.46	-5.03	3.58	0.12
LISC-III 3263	90.5	293.94	-3.65	1.69	-0.43	-5.0	6.86	0.03