FSR 1228

(MWSC 1163)

0.20 UTI

0.29

C_N

0.11

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 29

Radius (P>50% members) 6.9 [arcmin]

C_N 0.29 Poorly populated
C_dens 0.11 Very loose
C_C3 0.12 Very 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 1228 is a poorly populated, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a very young cluster (see Parameters). It is poorly studied in the literature.

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

⚠️ 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.

Distant Moderate extinction Very young

Data

🔍 Search references for FSR 1228 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	–	109.336	-15.757	0.273	-0.993	1.287	–
Just et al.	2023	109.291	-15.793	–	–	–	–
Kharchenko et al.	2016	109.291	-15.793	–	–	–	–
Kharchenko et al.	2013	109.297	-15.795	–	-2.29	5.71	–
Froebrich et al.	2007	109.312	-15.811	–	–	–	–

💡 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	–	–	–	6	–	776	–	–
Kharchenko et al.	2016	4.19	2.13	–	6	–	–	–	–
Kharchenko et al.	2013	4.19	2.13	–	6	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Bica 349	20.7	109.52	-15.71	0.17	-0.92	1.28	–	0.06

💡 Note: The % column shows the percentage of members that FSR 1228 shares with each listed object.

Visualization

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