FSR 0377

(MWSC 3641)

0.61 UTI

0.59

C_N

0.57

C_dens

0.75

C_C3

0.56

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 68

Radius (P>50% members) 3.7 [arcmin]

C_N 0.59 Moderately populated
C_dens 0.57 Moderately dense
C_C3 0.75 High quality
C_lit 0.56 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 SciX 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

FSR 0377 is a moderately populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~4.54 kpc) differs significantly from the median photometric distance (~2.30 kpc).

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Young

Almeida et al. (2025): Mass determination: good fit. Isochrone match: intermediate fit.

Data

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	338.726	58.296	0.22	-3.287	-2.168	-63.881
Almeida et al.	2025	338.719	58.304	–	–	–	–
Just et al.	2023	338.649	58.292	–	–	–	–
Dias et al.	2021	338.719	58.304	0.207	-3.219	-2.155	–
Bica et al.	2019	338.71	58.308	–	–	–	–
Kharchenko et al.	2016	338.649	58.292	–	–	–	–
Kharchenko et al.	2013	338.655	58.295	–	-4.58	-1.53	–
Kharchenko et al.	2012	338.655	58.295	–	-4.58	-1.53	–
Froebrich et al.	2007	338.717	58.304	–	–	–	–
Dias et al.	2002	338.717	58.304	–	-5.87	-4.04	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	Bfr	BSS
Almeida et al.	2025	3.56	2.16	–	12	–	583	–	–
Just et al.	2023	–	–	–	50	–	26	–	–
Dias et al.	2021	3.56	2.16	–	12	-0.065	–	–	–
Kharchenko et al.	2016	2.30	1.86	–	50	–	–	–	–
Kharchenko et al.	2013	2.30	1.86	–	50	–	–	–	–
Kharchenko et al.	2012	2.30	1.86	–	50	–	–	–	–
Dias et al.	2002	2.30	1.86	–	50	–	–	–	–

💡 Note: The parameters are sometimes transformed from their original values to match the format of the columns shown here, see FAQ. The columns DAv, Bfr, BSS correspond to differential extinction, binary fraction, and blue stragglers, respectively. BSS values can be listed as fractions or integers.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 390	44.1	338.71	58.29	0.22	-3.38	-2.15	-8.54	0.08

💡 Note: The % column shows the percentage of members that FSR 0377 shares with each listed object.

Visualization

💡 Note: How are the galactocentric plots generated? See FAQ.