NGC 3446

0.07 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 18

Core radius and density 2.9 [pc], 0.04 [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 0.1 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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NGC 3446 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, well above the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 8 years.

(*): The parallax distance estimate (~4.92 kpc) differs significantly from the median photometric distance (~1.49 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 Old

Data

🔍 Search references for NGC 3446 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–	163.084	-45.098	0.203	-6.076	1.506	–
Dias et al.	2018	–	–	–	-6.56	0.52	–
Sampedro et al.	2017	163.05	-45.148	–	-7.94	2.29	–
Tadross	2014	163.05	-45.148	–	–	–	–
Dias et al.	2014	163.05	-45.148	–	-8.06	2.31	–
Dias et al.	2002	163.05	-45.148	–	-8.26	2.23	–

💡 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–	1.49	0.5	–	1000	–	–	–	–
Tadross	2014	1.49	0.50	–	1000	–	–	–	–
Dias et al.	2002	1.49	0.50	–	1000	–	–	–	–

Visualization

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