ESO 311 21

(MWSC 1415)

0.82 UTI

0.83

C_N

1.0

C_dens

0.62

C_C3

0.82

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 307

Radius (P>50% members) 3.4 [arcmin]

C_N 0.83 Rich
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.82 Well-studied
C_dup 1.0 Unique

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

Overview

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ESO 311 21 is a rich, very dense object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster (see Parameters). It is well-studied in the literature.

Very distant Moderate extinction Massive Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for ESO 311 21 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	–	120.415	-41.598	0.192	-2.813	5.526	66.409
Hu & Soubiran	2025	120.421	-41.592	–	–	–	–
Hunt & Reffert	2024	120.428	-41.593	0.193	-2.804	5.528	65.881
Cavallo et al.	2024	120.421	-41.592	0.182	–	–	–
Hunt & Reffert	2023	120.428	-41.593	0.193	-2.804	5.528	65.881
Just et al.	2023	120.42	-41.581	–	–	–	–
Cantat-Gaudin et al.	2020	120.415	-41.596	0.16	-2.852	5.51	–
Sánchez et al.	2020	120.425	-41.599	–	-2.962	5.54	–
Cantat-Gaudin & Anders	2020	120.415	-41.596	0.16	-2.852	5.51	–
Soubiran et al.	2018	120.415	-41.596	–	–	–	79.59
Bica et al.	2019	120.439	-41.602	–	–	–	–
Cantat-Gaudin et al.	2018	120.415	-41.596	0.16	-2.852	5.51	–
Kharchenko et al.	2016	120.42	-41.581	–	–	–	–
Kharchenko et al.	2013	120.424	-41.583	–	-8.69	6.28	–
Glushkova et al.	2010	120.423	-41.599	–	–	–	–
Dias et al.	2002	120.425	-41.599	–	-14.99	10.24	–

💡 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
Hu & Soubiran	2025	–	–	–	–	-0.200*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1916*	–	–
Cavallo et al.	2024	4.55	2.58	–	2188	-0.180	–	–	–
Hunt & Reffert	2023	4.54	1.88	0.83	2500	–	–	–	–
Just et al.	2023	–	–	–	1995	–	1683	–	–
Cantat-Gaudin et al.	2020	5.45	1.83	–	2570	–	–	–	–
Cantat-Gaudin & Anders	2020	5.30	–	–	–	–	–	–	–
Soubiran et al.	2018	5.30	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	5.30	–	–	–	–	–	–	–
Kharchenko et al.	2016	5.12	2.45	–	1995	–	–	–	–
Kharchenko et al.	2013	5.12	2.45	–	1995	–	–	–	–
Glushkova et al.	2010	2.33	1.52	–	12589	–	–	–	–
Dias et al.	2002	2.33	1.52	–	12589	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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