NGC 2039

(MWSC 663)

0.09 UTI

0.0

C_N

0.07

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 22

Radius (P>50% members) 5.4 [arcmin]

C_N 0.0 Sparse
C_dens 0.07 Very loose
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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NGC 2039 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~5.10 kpc) differs significantly from the median photometric distance (~2.24 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 Moderate extinction Intermediate age

Dias et al. (2002)
Asterism (Archinal, B. A. & Hynes, S. J. 2003)

Data

🔍 Search references for NGC 2039 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	–	86.511	8.678	0.196	-0.106	0.371	62.362
Just et al.	2023	86.542	8.676	–	–	–	–
Kharchenko et al.	2016	86.542	8.676	–	–	–	–
Kharchenko et al.	2013	86.55	8.675	–	2.73	-4.96	–

💡 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]	Bfr	BSS
Just et al.	2023	–	–	–	380	–	601	–	–
Kharchenko et al.	2016	2.24	2.39	–	380	–	–	–	–
Kharchenko et al.	2013	2.24	2.39	–	380	–	–	–	–

Visualization

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