BDSB 102

(BDS2003 102; MWSC 2625)

0.25 UTI

0.6

C_N

0.13

C_dens

0.38

C_C3

0.19

C_lit

0.84

C_dup

N_m (P>50%) 69

Core radius and density 2.5 [pc], 0.7 [pc^-2]

C3 classification BC

C_N 0.6 Moderately populated
C_dens 0.13 Very loose
C_C3 0.38 Low quality
C_lit 0.19 Rarely studied
C_dup 0.84 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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BDSB 102 is a moderately populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, very young cluster (see Parameters). It is rarely studied in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.84) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close High extinction Massive Very young

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Bica et al. (2003)
Classified as stellar group (IRGr).

Data

🔍 Search references for BDSB 102 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–	263.179	-32.569	0.286	-1.611	-2.753	-6.647
Just et al.	2023	263.225	-32.571	–	–	–	–
Kharchenko et al.	2016	263.225	-32.571	–	–	–	–
Kharchenko et al.	2013	263.235	-32.57	–	-2.72	-3.06	–
Morales et al.	2013	263.217	-32.576	–	–	–	–
Bica et al.	2003	263.214	-32.575	–	–	–	–

💡 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–	2.84	4.76	–	2	–	1016	–	–
Just et al.	2023	–	–	–	2	–	1016	–	–
Kharchenko et al.	2016	2.84	4.76	–	2	–	–	–	–
Kharchenko et al.	2013	2.84	4.76	–	2	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
NGC 6374	15.9	263.09	-32.6	0.34	-1.53	-3.07	-6.56	0.09

💡 Note: The % column shows the percentage of members that BDSB 102 shares with each listed object.

Visualization

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