Haffner 3

(MWSC 1081; OCL 556; FoF 192)

0.91 UTI

0.79

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 219

Radius (P>50% members) 4.4 [arcmin]

C_N 0.79 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

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

Overview

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Haffner 3 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Dias et al. (2002)
No cluster (Piatti, A. E.; Clariá, J. J.; Ahumada, A. V. 2011, NewA 16, 161)

Data

🔍 Search references for Haffner 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	–	106.026	-6.13	0.374	-1.174	-0.878	38.709
Li et al.	2025	106.027	-6.133	0.379	-1.179	-0.906	–
Hu & Soubiran	2025	106.027	-6.118	–	–	–	–
Almeida et al.	2025	106.027	-6.126	–	–	–	–
Hunt & Reffert	2024	106.021	-6.14	0.363	-1.169	-0.873	45.899
Cavallo et al.	2024	106.027	-6.118	0.368	–	–	–
Hunt & Reffert	2023	106.021	-6.14	0.363	-1.169	-0.873	45.899
Almeida et al.	2023	106.029	-6.133	–	–	–	–
Just et al.	2023	106.021	-6.128	–	–	–	–
Dias et al.	2021	106.027	-6.126	0.382	-1.168	-0.896	54.428
Cantat-Gaudin et al.	2020	106.027	-6.133	0.379	-1.179	-0.906	–
Cantat-Gaudin & Anders	2020	106.027	-6.133	0.379	-1.179	-0.906	–
Liu & Pang	2019	106.028	-6.122	0.38	-1.123	-0.744	–
Bossini et al.	2019	106.027	-6.133	–	–	–	–
Soubiran et al.	2018	106.027	-6.133	–	–	–	54.3
Bica et al.	2019	106.021	-6.123	–	–	–	–
Cantat-Gaudin et al.	2018	106.027	-6.133	0.379	-1.179	-0.906	–
Kharchenko et al.	2016	106.021	-6.128	–	–	–	–
Kharchenko et al.	2013	106.027	-6.13	–	0.85	-0.32	–

💡 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
Li et al.	2025	2.31	1.21	–	607	-0.151	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.200*	–	–	–
Almeida et al.	2025	2.33	1.46	–	352	–	286	–	–
Hunt & Reffert	2024	–	–	–	–	–	791*	–	–
Cavallo et al.	2024	2.69	0.73	–	912	0.730	–	–	–
Hunt & Reffert	2023	2.41	1.00	0.59	494	–	–	–	–
Almeida et al.	2023	2.33	1.33	–	527	-0.142	275*	0.71	–
Just et al.	2023	–	–	–	398	–	68	–	–
Dias et al.	2021	2.33	1.46	–	352	-0.115	–	–	–
Cantat-Gaudin et al.	2020	2.51	0.79	–	589	–	–	–	–
Cantat-Gaudin & Anders	2020	2.45	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	417	0.000	–	–	–
Bossini et al.	2019	2.76	1.14	–	437	0.000	–	–	–
Soubiran et al.	2018	2.45	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.45	–	–	–	–	–	–	–
Kharchenko et al.	2016	1.93	1.23	–	398	–	–	–	–
Kharchenko et al.	2013	1.93	1.23	–	398	–	–	–	–

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

Visualization

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