Hogg 3

0.05 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 14

Core radius and density 3.5 [pc], 0.05 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.06 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 3 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, near the mid-plane, affected by low extinction. It is catalogued as a very massive, young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~5.38 kpc) differs significantly from the median photometric distance (~2.67 kpc).

⚠️ 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.

Relatively close Low extinction Very massive Young

Piatti et al. (2011)
Not a genuine open cluster.

Dias et al. (2002)
No cluster (Piatti, A. E.; Clariá, J. J.; Ahumada, A. V. 2011, NewA 16, 161); cat V3.5 (Jan 2016)

Data

🔍 Search references for Hogg 3 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–	149.443	-54.698	0.186	-6.236	3.621	63.442
Bukowiecki et al.	2011	149.446	-54.677	–	–	–	–
Lynga	1987	149.455	-54.656	–	–	–	–

💡 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–	2.67	0.54	–	89	–	6770	–	–
Bukowiecki et al.	2012	–	–	–	–	–	6770	–	–
Bukowiecki et al.	2011	2.67⁽¹⁾	0.54	–	89	–	–	–	–

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

Visualization

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