DC 3

(MWSC 1226)

0.57 UTI

0.63

C_N

0.3

C_dens

1.0

C_C3

0.45

C_lit

1.0

C_dup

N_m (P>50%) 76

Core radius and density 2.5 [pc], 1.5 [pc^-2]

C3 classification AA

C_N 0.63 Moderately populated
C_dens 0.3 Loose
C_C3 1.0 Very high quality
C_lit 0.45 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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DC 3 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a very large^* distance, well below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~12.02 kpc) differs significantly from the median photometric distance (~7.26 kpc).

Note: This object contains blue stragglers according to at least one source.

Very distant Moderate extinction Near-solar metallicity Old Contains BSS

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.43 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.43 (50th percentile).

Data

🔍 Search references for DC 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–	111.755	-37.516	0.083	-1.222	2.731	102.568
Hu & Soubiran	2025	111.783	-37.507	–	–	–	–
Almeida et al.	2025	111.751	-37.52	–	–	–	–
Hunt & Reffert	2024	111.756	-37.518	0.109	-1.216	2.752	95.206
Cavallo et al.	2024	111.783	-37.507	0.111	–	–	–
He et al.	2023	111.755	-37.515	0.083	-1.221	2.715	102.57
Hunt & Reffert	2023	111.756	-37.518	0.109	-1.216	2.752	95.206
Li et al.	2023	111.763	-37.524	0.09	-1.21	2.73	–
Just et al.	2023	111.746	-37.523	–	–	–	–
Dias et al.	2021	111.751	-37.52	0.081	-1.214	2.645	–
Bica et al.	2019	111.749	-37.524	–	–	–	–
Sampedro et al.	2017	111.75	-37.521	–	–	–	–
Kharchenko et al.	2016	111.746	-37.523	–	–	–	–
Kharchenko et al.	2013	111.75	-37.525	–	-1.61	4.99	–
Bukowiecki et al.	2011	111.758	-37.519	–	–	–	–
Dias et al.	2002	111.75	-37.521	–	-1.61	4.99	–

💡 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–	7.26	1.04	1.79	1820	-0.339	264	–	2
Hu & Soubiran	2025	–	–	–	–	-0.340⁽⁵⁾	–	–	–
Almeida et al.	2025	7.93	1.04	–	2979	–	1659	–	–
Hunt & Reffert	2024	7.26	0.70	1.79	1627	–	359⁽¹⁾	–	–
Cavallo et al.	2024	7.45	0.96	–	4365	-0.340	–	–	–
He et al.	2023	8.71	0.80	–	2512	–	–	–	–
Hunt & Reffert	2023	7.26	0.70	1.79	1629	–	–	–	–
Li et al.	2023	12.30	1.00	–	2512	-0.337	–	–	2⁽¹⁾
Just et al.	2023	–	–	–	1820	–	170	–	–
Dias et al.	2021	7.93	1.04	–	2979	-0.146	–	–	–
Kharchenko et al.	2016	4.32	1.71	–	1820	–	–	–	–
Kharchenko et al.	2013	4.32	1.71	–	1820	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	50	–	–
Bukowiecki et al.	2011	0.67⁽¹⁾	1.55	–	79	–	–	–	–
Dias et al.	2002	4.32	1.71	–	1820	–	–	–	–

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

Visualization

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