NGC 7538

(MWSC 3707)

0.24 UTI

0.0

C_N

0.22

C_dens

0.62

C_C3

0.19

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.3 [pc], 1.1 [pc^-2]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.22 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.19 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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NGC 7538 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a very young cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a large 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.

Relatively close High extinction Very young

Bica et al. (2003)
Classified as infrared cluster (IRC).

Data

🔍 Search references for NGC 7538 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–	348.413	61.494	0.327	-3.813	-2.299	–
Just et al.	2023	348.398	61.496	–	–	–	–
Kharchenko et al.	2016	348.398	61.496	–	–	–	–
Kharchenko et al.	2013	348.405	61.5	–	-2.4	-2.67	-64.9
Kharchenko et al.	2012	348.405	61.5	–	-2.4	-2.67	–
Bica et al.	2003	348.432	61.472	–	–	–	–

💡 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–	2.8	3.62	–	2	–	70	–	–
Just et al.	2023	–	–	–	2	–	70	–	–
Kharchenko et al.	2016	2.80	3.62	–	2	–	–	–	–
Kharchenko et al.	2013	2.80	3.62	–	2	–	–	–	–
Kharchenko et al.	2012	2.80	3.62	–	2	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
BDSB 160	88.0	348.43	61.49	0.33	-3.83	-2.31	–	0.04

💡 Note: The % column shows the percentage of members that NGC 7538 shares with each listed object.

Visualization

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