NGC 6904

(MWSC 3326)

0.16 UTI

0.0

C_N

0.03

C_dens

0.12

C_C3

0.32

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 2.7 [pc], 0.2 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.12 Very low quality
C_lit 0.32 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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NGC 6904 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly 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.

Relatively close Moderate extinction Intermediate age

Data

🔍 Search references for NGC 6904 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–	305.42	25.726	0.264	-2.347	-5.302	-23.444
Just et al.	2023	305.454	25.732	–	–	–	–
Bica et al.	2019	305.446	25.736	–	–	–	–
Dias et al.	2018	–	–	–	-3.25	-5.1	–
Loktin & Popova	2017	305.445	25.74	–	-0.443	-1.047	–
Sampedro et al.	2017	305.45	25.74	–	-1.61	-5.64	–
Kharchenko et al.	2016	305.454	25.732	–	–	–	–
Tadross	2014	305.45	25.74	–	–	–	–
Dias et al.	2014	305.45	25.74	–	-1.01	-5.88	–
Kharchenko et al.	2013	305.46	25.735	–	-0.08	-1.46	–
Bukowiecki et al.	2011	305.458	25.732	–	–	–	–
Dias et al.	2002	305.45	25.74	–	-1.01	-5.88	–

💡 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–	2.71	1.86	–	112	–	416	–	–
Just et al.	2023	–	–	–	63	–	569	–	–
Loktin & Popova	2017	3.76	0.85	–	1862	–	–	–	–
Kharchenko et al.	2016	2.92	6.11	–	63	–	–	–	–
Tadross	2014	1.35	1.23	–	1000	–	–	–	–
Kharchenko et al.	2013	2.92	6.11	–	63	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	263	–	–
Bukowiecki et al.	2011	2.50⁽¹⁾	2.49	–	112	–	–	–	–
Dias et al.	2002	1.35	1.23	–	1000	–	–	–	–

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

Visualization

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