BDSB 18

(MWSC 3221)

0.03 UTI

0.0

C_N

0.04

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 19

Stellar density (N₅₀/rad) 0.2 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

BDSB 18 is a sparse, very loose object of very low 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.

⚠️ 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 High extinction Very young

Data

🔍 Search references for BDSB 18 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	300.304	33.206	0.235	-3.582	-7.673	–
Just et al.	2023	300.277	33.187	–	–	–	–
Kharchenko et al.	2016	300.277	33.187	–	–	–	–
Kharchenko et al.	2013	300.282	33.189	–	-3.0	-5.17	–

💡 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–	3.52	3.55	–	10	–	267	–	–
Just et al.	2023	–	–	–	10	–	267	–	–
Kharchenko et al.	2016	3.52	3.55	–	10	–	–	–	–
Kharchenko et al.	2013	3.52	3.55	–	10	–	–	–	–

Visualization

ℹ️