UBC 556

N_50

r_50

106

3.1

Summary

UBC 556 is a rich, very dense object of very high C3 quality. It is located at a relatively close distance from the Sun, near 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
Castro-Ginard et al. (2020)	259.282	-41.525	0.548	0.117	-0.75	–
Cantat-Gaudin et al. (2020)	259.305	-41.523	0.546	0.107	-0.738	–
Dias et al. (2021)	259.278	-41.522	0.531	0.099	-0.728	–
Hunt & Reffert (2023)	259.289	-41.522	0.546	0.091	-0.777	28.471
Cavallo et al. (2024)	259.285	-41.53	0.546	–	–	–
Hunt & Reffert (2024)	259.289	-41.522	0.546	0.091	-0.777	28.471
Almeida et al. (2025)	259.278	-41.522	–	–	–	–
Hu & Soubiran (2025)	259.285	-41.53	–	–	–	–

UCC	259.287	-41.526	0.547	0.088	-0.755	41.816

Galactocentric position

How are the galactocentric plots generated?

Search coordinates in CDS | Simbad

Estimated members

1 2 3

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Fundamental parameters

Reference	Values
Cantat-Gaudin et al. (2020)	`AVNN=2.28, DistPc=1740.0, AgeNN=8.68`
Dias et al. (2021)	`Av=2.509, Dist=1667, logage=8.269, [Fe/H]=0.375`
Hunt & Reffert (2023)	`AV50=2.857, diffAV50=2.127, MOD50=11.12, logAge50=8.158`
Cavallo et al. (2024)	`AV50=2.73, dMod50=11.07, logAge50=8.71, [Fe/H]50=0.05`
Hunt & Reffert (2024)	`MassJ=831.259, MassTot=831.259`
Almeida et al. (2025)	`AV=2.509, Dist=1667, logAge=8.269, MassRk=486.0`
Hu & Soubiran (2025)	`MA22=-0.2, MA23f=-0.18, MZ23=-0.19, MK24=-0.09, MF24=-0.23`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LISC 3180	97.2	259.29	-41.52	0.55	0.09	-0.76	1.78	0.05