Hogg 7

(MWSC 1810)

0.12 UTI

0.0

C_N

0.03

C_dens

0.25

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 18

Core radius and density 2.8 [pc], 0.2 [pc^-2]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.25 Low quality
C_lit 0.16 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Hogg 7 is a sparse, 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 massive, 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 Moderate extinction Massive Very young

Data

🔍 Search references for Hogg 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–	157.227	-60.756	0.255	-6.982	3.854	6.484
Just et al.	2023	157.277	-60.742	–	–	–	–
Dias et al.	2018	–	–	–	-4.89	2.5	–
Sampedro et al.	2017	157.271	-60.75	–	-5.7	-0.33	–
Kharchenko et al.	2016	157.277	-60.742	–	–	–	–
Dias et al.	2014	157.271	-60.75	–	-4.94	0.13	–
Kharchenko et al.	2013	157.282	-60.745	–	-7.94	-0.06	–
Lynga	1987	157.27	-60.722	–	–	–	–

💡 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–	4.58	1.91	–	1	–	1542	–	–
Just et al.	2023	–	–	–	1	–	1542	–	–
Kharchenko et al.	2016	4.58	1.91	–	1	–	–	–	–
Kharchenko et al.	2013	4.58	1.91	–	1	–	–	–	–

Visualization

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