Haffner 17

(VDBH 12; MWSC 1360; OCL 694; vdBergh-Hagen 12; ESO 429 22; FSR 1337)

0.84 UTI

0.84

C_N

1.0

C_dens

0.75

C_C3

0.81

C_lit

1.0

C_dup

N₅₀ (P>50% members) 337

Stellar density (N₅₀/rad) 50.5 [N/pc²]

C3 classification AB

C_N 0.84 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.81 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Haffner 17 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.

Distant High extinction Near-solar metallicity Intermediate age

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: 0.83 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.83 (50th percentile).

Ahumada & Lapasset (2007)
All the cluster parameters are from (2005, unpublished data). The diagram of stars up to 3' of the centre was examined.

Data

🔍 Search references for Haffner 17 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–	117.895	-31.815	0.27	-1.184	1.877	41.829
Li et al.	2025	117.899	-31.812	0.247	-1.195	1.859	–
Almeida et al.	2025	117.897	-31.81	–	–	–	–
Hunt & Reffert	2024	117.898	-31.815	0.273	-1.183	1.879	58.164
Cavallo et al.	2024	117.878	-31.82	0.276	–	–	–
Hunt & Reffert	2023	117.898	-31.815	0.273	-1.183	1.879	58.164
Just et al.	2023	117.899	-31.814	–	–	–	–
Jaehnig et al.	2021	117.894	-31.814	0.278	-1.19	1.848	–
Rain et al.	2021	117.899	-31.812	0.247	-1.195	1.859	–
Dias et al.	2021	117.897	-31.81	0.243	-1.181	1.873	41.865
Cantat-Gaudin et al.	2020	117.899	-31.812	0.247	-1.195	1.859	–
Cantat-Gaudin & Anders	2020	117.899	-31.812	0.247	-1.195	1.859	–
Soubiran et al.	2018	117.899	-31.812	–	–	–	41.87
Bica et al.	2019	117.908	-31.808	–	–	–	–
Cantat-Gaudin et al.	2018	117.899	-31.812	0.247	-1.195	1.859	–
Dias et al.	2018	–	–	–	-1.53	1.85	–
Sampedro et al.	2017	117.904	-31.817	-2.12	0.08	–	–
Kharchenko et al.	2016	117.899	-31.814	–	–	–	–
Dias et al.	2014	117.904	-31.817	–	-1.76	-0.04	–
Kharchenko et al.	2013	117.904	-31.817	–	3.61	-1.92	–
Bukowiecki et al.	2011	117.9	-31.811	–	–	–	–
Ahumada & Lapasset	2007	117.9	-31.817	–	–	–	–
van den Bergh	2006	117.868	-31.84	–	–	–	–
Dias et al.	2002	117.904	-31.817	–	3.61	-1.92	–
Lynga	1987	117.91	-31.831	–	–	–	–
van den Bergh & Hagen	1975	117.45	-31.717	–	–	–	–

💡 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–	3.1	3.535	2.77	130	0.290	855	–	0
Li et al.	2025	1.95	2.70	–	1197	-0.055	–	–	–
Almeida et al.	2025	2.95	3.23	–	130	–	1015	–	–
Hunt & Reffert	2024	–	–	–	–	–	3687⁽¹⁾	–	–
Cavallo et al.	2024	3.45	3.56	–	102	0.290	–	–	–
Hunt & Reffert	2023	3.18	3.51	2.77	91	–	–	–	–
Just et al.	2023	–	–	–	148	–	372	–	–
Jaehnig et al.	2021	3.59⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	3.63	3.97	–	50	–	–	–	0
Dias et al.	2021	2.95	3.23	–	130	0.338	–	–	–
Cantat-Gaudin et al.	2020	3.33	2.99	–	126	–	–	–	–
Kounkel et al.	2020	3.10	3.39	–	257	–	–	–	–
Cantat-Gaudin & Anders	2020	3.63	–	–	–	–	–	–	–
Soubiran et al.	2018	3.63	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.63	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.90	3.81	–	148	–	–	–	–
Kharchenko et al.	2013	2.90	3.81	–	148	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	695	–	–
Bukowiecki et al.	2011	2.91⁽¹⁾	2.93	–	178	–	–	–	–
Ahumada & Lapasset	2007	–	3.63	–	100	–	–	–	1
van den Bergh	2006	2.88	3.97	–	50	–	–	–	–
Dias et al.	2002	2.88	3.97	–	50	–	–	–	–

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

Visualization

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