FSR 1304

(MWSC 1599)

0.25 UTI

0.31

C_N

0.08

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 31

Radius (P>50% members) 6.1 [arcmin]

C_N 0.31 Poorly populated
C_dens 0.08 Very loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

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FSR 1304 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by low extinction. It is catalogued as a massive, old cluster (see Parameters). It is poorly studied in the literature.

⚠️ 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.

Very distant Low extinction Massive Old

Data

🔍 Search references for FSR 1304 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	–	133.337	-14.803	0.198	-1.791	0.311	145.236
Just et al.	2023	133.333	-14.782	–	–	–	–
Kharchenko et al.	2016	133.333	-14.782	–	–	–	–
Kharchenko et al.	2013	133.339	-14.785	–	-0.75	-0.99	–
Froebrich et al.	2007	133.367	-14.781	–	–	–	–

💡 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
Just et al.	2023	–	–	–	1778	–	1977	–	–
Kharchenko et al.	2016	5.17	0.32	–	1778	–	–	–	–
Kharchenko et al.	2013	5.17	0.32	–	1778	–	–	–	–

Visualization

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