NGC 2666

0.19 UTI

0.26

C_N

0.46

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 26

Stellar density (N₅₀/rad) 2.3 [N/pc²]

C3 classification CC

C_N 0.26 Poorly populated
C_dens 0.46 Loose
C_C3 0.25 Low quality
C_lit 0.0 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 2666 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a relatively close^* 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 12 years.

(*): The parallax distance estimate (~1.67 kpc) differs significantly from the median photometric distance (~0.86 kpc).

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

⚠️ 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.

Close Low extinction Old

Data

🔍 Search references for NGC 2666 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–	132.442	44.644	0.597	-0.66	-7.369	0.617
Dias et al.	2014	132.446	44.703	–	–	–	2.6
Dias et al.	2002	132.446	44.703	–	0.49	-6.91	2.6

💡 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–	0.86	0.09	–	3236	–	–	–	–
Dias et al.	2002	0.86	0.09	–	3236	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
NGC 2666A	30.8	132.45	44.71	0.43	-1.59	-4.56	39.95	0.04

💡 Note: The % column shows the percentage of members that NGC 2666 shares with each listed object.

Visualization

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