COIN-Gaia 20

(COIN 20)

N_50

r_50

9.3

Summary

COIN-Gaia 20 is a moderately populated, very dense object of high C3 quality. It is located at a relatively close distance from the Sun, below 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
Cantat-Gaudin et al. (2019)	78.634	31.691	0.91	0.55	-1.45	–
Monteiro & Dias (2019)	78.634	31.691	–	–	–	2.408
Cantat-Gaudin et al. (2020)	78.634	31.691	0.911	0.548	-1.455	–
Dias et al. (2021)	78.625	31.705	0.916	0.547	-1.465	–
Tarricq et al. (2022)	78.664	31.67	0.919	0.495	-1.519	–
He et al. (2022)	78.627	31.709	0.936	0.507	-1.517	–
Hunt & Reffert (2023)	78.636	31.72	0.921	0.539	-1.499	-0.447
Cavallo et al. (2024)	78.745	31.572	0.922	–	–	–
Hunt & Reffert (2024)	78.636	31.72	0.921	0.539	-1.499	-0.447
Zhang et al. (2024)	78.636	31.72	–	–	–	–
Almeida et al. (2025)	78.625	31.705	–	–	–	–

UCC	78.638	31.722	0.923	0.495	-1.496	-1.433

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
Cantat-Gaudin et al. (2019)	`d=1063`
Monteiro & Dias (2019)	`E(B-V)=0.314, Dist=1.173, logAge=7.83, Z=0.04`
Cantat-Gaudin et al. (2020)	`AVNN=0.63, DistPc=1044.0, AgeNN=7.93`
Dias et al. (2021)	`Av=1.001, Dist=1000, logage=7.845, [Fe/H]=-0.021`
Tarricq et al. (2022)	`Dist=1016, logAgeNN=7.93`
He et al. (2022)	`A0=1.05, logAge=7.5`
Hunt & Reffert (2023)	`AV50=0.711, diffAV50=0.606, MOD50=10.017, logAge50=7.871`
Cavallo et al. (2024)	`AV50=0.89, dMod50=10.11, logAge50=7.64, [Fe/H]50=0.04`
Hunt & Reffert (2024)	`MassJ=188.022, MassTot=207.838`
Zhang et al. (2024)	`[Fe/H]ANN=-0.1664, [Fe/H]MCMC=-0.1442`
Almeida et al. (2025)	`AV=1.001, Dist=1000, logAge=7.845, MassRk=68.9`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 66	89.8	78.64	31.7	0.92	0.48	-1.51	-1.43	0.03