Haffner 5

(MWSC 1168; OCL 624; ESO 492 08; FSR 1272; FoF 30)

0.87 UTI

0.89

C_N

1.0

C_dens

0.75

C_C3

0.86

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 461

Radius (P>50% members) 6.6 [arcmin]

C_N 0.89 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.86 Well-studied
C_dup 1.0 Unique

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

Overview

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Haffner 5 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is well-studied in the literature.

Relatively close Low extinction Near-solar metallicity Old

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

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 5 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	–	109.49	-22.669	0.58	0.997	-4.047	-7.852
Li et al.	2025	109.493	-22.66	0.571	0.965	-4.06	–
Hu & Soubiran	2025	109.479	-22.662	–	–	–	–
Almeida et al.	2025	109.488	-22.658	–	–	–	–
Hunt & Reffert	2024	109.493	-22.663	0.581	0.994	-4.045	-8.644
Cavallo et al.	2024	109.479	-22.662	0.581	–	–	–
Hunt & Reffert	2023	109.493	-22.663	0.581	0.994	-4.045	-8.644
Just et al.	2023	109.487	-22.665	–	–	–	–
Dias et al.	2021	109.488	-22.658	0.57	0.974	-4.062	-7.181
Cantat-Gaudin et al.	2020	109.493	-22.66	0.571	0.965	-4.06	–
Cantat-Gaudin & Anders	2020	109.493	-22.66	0.571	0.965	-4.06	–
Liu & Pang	2019	109.488	-22.66	0.569	0.978	-4.084	–
Soubiran et al.	2018	109.493	-22.66	–	–	–	-6.93
Bica et al.	2019	109.507	-22.654	–	–	–	–
Cantat-Gaudin et al.	2018	109.493	-22.66	0.571	0.965	-4.06	–
Kharchenko et al.	2016	109.487	-22.665	–	–	–	–
Kharchenko et al.	2013	109.492	-22.667	–	-3.95	-1.36	–

💡 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	1.66	0.79	–	4730	-0.154	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.190*	–	–	–
Almeida et al.	2025	1.59	0.81	–	5176	–	631	–	–
Hunt & Reffert	2024	–	–	–	–	–	1163*	–	–
Cavallo et al.	2024	1.65	0.73	–	2884	0.190	–	–	–
Hunt & Reffert	2023	1.63	0.74	0.55	1413	–	–	–	–
Just et al.	2023	–	–	–	398	–	123	–	–
Dias et al.	2021	1.59	0.81	–	5176	-0.103	–	–	–
Cantat-Gaudin et al.	2020	1.69	0.76	–	4677	–	–	–	–
Cantat-Gaudin & Anders	2020	1.67	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	2630	-0.250	–	–	–
Soubiran et al.	2018	1.67	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	1.67	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.07	2.13	–	398	–	–	–	–
Kharchenko et al.	2013	2.07	2.13	–	398	–	–	–	–

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

Visualization

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