FSR 0307

(MWSC 3527)

0.23 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.5

C_lit

1.0

C_dup

N_m (P>50%) 14

Core radius and density 3.7 [pc], 0.1 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very low quality
C_lit 0.5 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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FSR 0307 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a low-mass, old cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~3.29 kpc) differs significantly from the median photometric distance (~1.50 kpc).

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Low mass Old

Data

🔍 Search references for FSR 0307 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	323.502	50.738	0.304	-3.594	-2.87	-29.273
Just et al.	2023	323.519	50.759	–	–	–	–
Dib et al.	2018	323.524	50.763	–	–	–	–
Sampedro et al.	2017	323.512	50.766	–	-1.24	-0.64	–
Joshi et al.	2016	323.524	50.763	–	–	–	–
Kharchenko et al.	2016	323.519	50.759	–	–	–	–
Dias et al.	2014	323.513	50.766	–	1.02	-1.13	–
Kharchenko et al.	2013	323.524	50.763	–	-4.86	-3.48	–
Kharchenko et al.	2012	323.524	50.763	–	-4.86	-3.48	–
Froebrich et al.	2007	323.512	50.766	–	–	–	–
Dias et al.	2002	323.512	50.766	–	0.9	-1.15	–

💡 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]	B_frac	BSS
UCC	99999–	1.5	1.58	–	1413	–	20	–	–
Just et al.	2023	–	–	–	1413	–	20	–	–
Dib et al.	2018	1.50	–	–	1413	–	–	–	–
Joshi et al.	2016	1.50	1.58	–	1413	–	–	–	–
Kharchenko et al.	2016	1.50	1.58	–	1413	–	–	–	–
Kharchenko et al.	2013	1.50	1.58	–	1413	–	–	–	–
Kharchenko et al.	2012	1.50	1.58	–	1413	–	–	–	–
Dias et al.	2002	1.50	1.58	–	1413	–	–	–	–

Visualization

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