FSR 1622

(MWSC 2056)

0.14 UTI

0.0

C_N

0.09

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 13

Radius (P>50% members) 4.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.09 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 1622 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 very high extinction. It is catalogued as a very massive, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.82 kpc) differs significantly from the median photometric distance (~6.02 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.

Very distant Very high extinction Very massive Intermediate age

Data

🔍 Search references for FSR 1622 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	–	189.441	-63.323	0.262	-7.109	-0.363	-23.943
Just et al.	2023	189.485	-63.257	–	–	–	–
Kharchenko et al.	2016	189.485	-63.257	–	–	–	–
Kharchenko et al.	2013	189.495	-63.26	–	-13.76	-0.25	–
Froebrich et al.	2007	189.488	-63.271	–	–	–	–

💡 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	–	–	–	398	–	9750	–	–
Kharchenko et al.	2016	6.02	5.81	–	398	–	–	–	–
Kharchenko et al.	2013	6.02	5.81	–	398	–	–	–	–

Visualization

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