Bochum 7

(MWSC 1550)

0.27 UTI

0.0

C_N

0.03

C_dens

0.12

C_C3

0.6

C_lit

1.0

C_dup

N₅₀ (P>50% members) 15

Radius (P>50% members) 6.3 [arcmin]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.12 Very low quality
C_lit 0.6 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Bochum 7 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, very young cluster (see Parameters). It is moderately studied in the literature.

Note: This object shares a small percentage of members with 2 later reported entries. See table with shared members information.

Very distant Moderate extinction Massive Very young

Data

🔍 Search references for Bochum 7 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–	131.197	-45.993	0.19	-3.388	3.87	–
Just et al.	2023	131.185	-45.977	–	–	–	–
Jaehnig et al.	2021	131.092	-45.974	0.185	-3.087	3.647	–
Kharchenko et al.	2016	131.185	-45.977	–	–	–	–
Dias et al.	2014	131.2	-45.967	–	-0.05	3.34	–
Kharchenko et al.	2013	131.19	-45.98	–	-3.47	4.33	49.0
Piskunov et al.	2008	131.199	-45.969	–	–	–	–
Kharchenko et al.	2007	131.2	-45.97	–	0.19	–	–
van den Bergh	2006	131.2	-45.967	–	–	–	–
Kharchenko et al.	2005	131.2	-45.97	–	-3.74	3.93	–
Dias et al.	2002	131.2	-45.967	–	-0.05	3.34	49.0

💡 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–	5.75	2.67	–	12	–	3837	–	–
Just et al.	2023	–	–	–	32	–	3837	–	–
Jaehnig et al.	2021	5.48⁽¹⁾	–	–	–	–	–	–	–
Kharchenko et al.	2016	6.06	2.77	–	32	–	–	–	–
Kharchenko et al.	2013	6.06	2.77	–	32	–	–	–	–
Piskunov et al.	2008	5.75	2.67	–	12	–	–	–	–
van den Bergh	2006	5.75	2.67	–	10	–	–	–	–
Kharchenko et al.	2005	5.75	2.67	–	12	–	–	–	–
Dias et al.	2002	5.75	2.67	–	10	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2140	20.0	131.18	-46.15	0.21	-3.31	3.93	–	0.4
CWNU 3263	16.0	131.18	-46.15	0.2	-3.3	3.94	–	0.08

💡 Note: The % column shows the percentage of members that Bochum 7 shares with each listed object.

Visualization

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