FSR 0401

(MWSC 3686)

N_50

r_50

2.8

Summary

FSR 0401 is a moderately populated, very dense object of high C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is well-studied in the literature.

This object shares a small percentage of members with a later reported entry.

Search object in SciX | Simbad

Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Dias et al. (2002)	345.229	59.705	–	-1.1	-0.96	–
Froebrich et al. (2007)	345.229	59.705	–	–	–	–
Kharchenko et al. (2012)	345.248	59.705	–	-6.9	2.6	–
Cantat-Gaudin et al. (2018)	345.245	59.698	0.23	-3.837	-2.652	–
Bica et al. (2019)	345.224	59.706	–	–	–	–
Cantat-Gaudin et al. (2020)	345.245	59.698	0.23	-3.837	-2.652	–
Dias et al. (2021)	345.243	59.704	0.234	-3.839	-2.639	–
Hunt & Reffert (2023)	345.242	59.697	0.267	-3.839	-2.686	-59.755
Cavallo et al. (2024)	345.268	59.699	0.266	–	–	–
Hunt & Reffert (2024)	345.242	59.697	0.267	-3.839	-2.686	-59.755
Almeida et al. (2025)	345.243	59.704	–	–	–	–

UCC	345.242	59.704	0.281	-3.851	-2.694	-59.206

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
Dias et al. (2002)	`E(B-V)=1.145, Dist=3208.0, Age=8.6`
Kharchenko et al. (2012)	`e_bv=1.145, distance=3208, log_age=8.6`
Cantat-Gaudin et al. (2018)	`dmode=3868.1`
Cantat-Gaudin et al. (2020)	`AVNN=3.22, DistPc=3908.0, AgeNN=8.43`
Dias et al. (2021)	`Av=3.046, Dist=4144, logage=8.772, [Fe/H]=0.089`
Hunt & Reffert (2023)	`AV50=3.523, diffAV50=1.265, MOD50=12.795, logAge50=8.297`
Cavallo et al. (2024)	`AV50=3.53, dMod50=12.74, logAge50=8.36, [Fe/H]50=0.2`
Hunt & Reffert (2024)	`MassJ=632.672, MassTot=632.672`
Almeida et al. (2025)	`AV=3.046, Dist=4144, logAge=8.772, MassRk=113.3`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 860	11.5	345.35	59.67	0.32	-4.0	-2.82	–	0.09