Bochum 15

0.24 UTI

0.34

C_N

0.1

C_dens

0.25

C_C3

0.26

C_lit

1.0

C_dup

N_m (P>50%) 34

Core radius and density 2.5 [pc], 0.5 [pc^-2]

C3 classification DB

C_N 0.34 Poorly populated
C_dens 0.1 Very loose
C_C3 0.25 Low quality
C_lit 0.26 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Bochum 15 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, very young cluster (see Parameters). It is poorly studied in the literature.

Note: This object shares a large percentage of members with 3 later reported entries. 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 Metal-rich Very young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.44 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.44 (50th percentile).

Data

🔍 Search references for Bochum 15 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–	115.079	-33.566	0.258	-2.245	3.041	–
Hunt & Reffert	2024	115.072	-33.551	0.257	-2.23	3.043	64.423
Cavallo et al.	2024	115.01	-33.602	0.258	–	–	–
Hunt & Reffert	2023	115.072	-33.551	0.257	-2.23	3.043	64.423
Loktin & Popova	2017	115.035	-33.569	–	-3.737	4.906	–
Dias et al.	2014	115.025	-33.533	–	-1.06	3.49	–
Bukowiecki et al.	2011	115.067	-33.545	–	–	–	–
van den Bergh	2006	115.025	-33.55	–	–	–	–
Dias et al.	2002	115.025	-33.533	–	-0.87	3.09	–
Lynga	1987	115.015	-33.552	–	–	–	–

💡 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–	3.12	1.58	2.22	8	0.630	457	–	–
Hunt & Reffert	2024	3.68	1.58	2.22	59	–	310⁽¹⁾	–	–
Cavallo et al.	2024	3.21	1.31	–	145	0.630	–	–	–
Hunt & Reffert	2023	3.68	1.58	2.22	59	–	–	–	–
Loktin & Popova	2017	2.81	1.81	–	6	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	604	–	–
Bukowiecki et al.	2011	3.12⁽¹⁾	1.58	–	10	–	–	–	–
van den Bergh	2006	2.81	1.83	–	5	–	–	–	–
Dias et al.	2002	2.81	1.82	–	6	–	–	–	–
Lynga	1987	–	–	–	1	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3351	100.0	115.07	-33.57	0.26	-2.25	3.04	–	0.05
DBSB 15	76.5	115.07	-33.56	0.26	-2.25	3.05	–	0.05
Cmg 1050	35.3	114.86	-33.65	0.26	-2.24	3.03	–	0.05

💡 Note: The % column shows the percentage of members that Bochum 15 shares with each listed object.

Visualization

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