Haffner 15

(VDBH 8; MWSC 1328; OCL 696; vdBergh-Hagen 8; ESO 368 12; FSR 1340)

0.97 UTI

0.86

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 392

Stellar density (N₅₀/rad) 42.9 [N/pc²]

C3 classification AA

C_N 0.86 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 1.0 Very 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 15 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object shares a moderate percentage of members with 3 later reported entries. See table with shared members information.

Distant High extinction Massive Near-solar metallicity Very young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Haffner 15 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–	116.376	-32.842	0.26	-2.172	3.317	76.836
Li et al.	2025	116.38	-32.846	0.238	-2.154	3.289	–
Almeida et al.	2025	116.381	-32.847	–	–	–	–
Hunt & Reffert	2024	116.379	-32.84	0.258	-2.171	3.322	52.093
Celli et al.	2024	116.38	-32.846	–	–	–	–
Cavallo et al.	2024	116.375	-32.846	0.262	–	–	–
Hunt & Reffert	2023	116.379	-32.84	0.258	-2.171	3.322	52.093
Just et al.	2023	116.377	-32.846	–	–	–	–
Dias et al.	2021	116.381	-32.847	0.236	-2.151	3.276	–
Cantat-Gaudin et al.	2020	116.38	-32.846	0.238	-2.154	3.289	–
Cantat-Gaudin & Anders	2020	116.38	-32.846	0.238	-2.154	3.289	–
Dias et al.	2019	116.379	-32.846	0.238	-2.154	3.289	52.95
Bica et al.	2019	116.384	-32.836	–	–	–	–
Cantat-Gaudin et al.	2018	116.38	-32.846	0.238	-2.154	3.289	–
Loktin & Popova	2017	116.385	-32.848	–	0.801	1.159	–
Kharchenko et al.	2016	116.377	-32.846	–	–	–	–
Dias et al.	2014	116.383	-32.85	–	2.08	3.9	–
Kharchenko et al.	2013	116.382	-32.848	–	-0.17	1.5	–
van den Bergh	2006	116.375	-32.842	–	–	–	–
Dias et al.	2002	116.383	-32.85	–	2.08	3.9	–
Dambis	1999	116.375	-32.842	–	–	–	–

💡 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–	3.05	3.34	2.39	19	0.095	1116	–	–
Li et al.	2025	1.58	2.12	–	1614	-0.225	–	–	–
Almeida et al.	2025	3.05	3.12	–	7	–	1000	–	–
Hunt & Reffert	2024	–	–	–	–	–	3377⁽¹⁾	–	–
Celli et al.	2024	–	–	–	26	–	1233	–	–
Cavallo et al.	2024	4.57	3.34	–	19	0.730	–	–	–
Hunt & Reffert	2023	3.26	3.54	2.39	12	–	–	–	–
Just et al.	2023	–	–	–	19	–	223	–	–
Dias et al.	2021	3.05	3.12	–	7	-0.355	–	–	–
Cantat-Gaudin et al.	2020	3.82	3.13	–	26	–	–	–	–
Cantat-Gaudin & Anders	2020	3.74	–	–	–	–	–	–	–
Dias et al.	2019	4.69	2.51	–	14	0.414	–	–	–
Cantat-Gaudin et al.	2018	3.74	–	–	–	–	–	–	–
Loktin & Popova	2017	2.19	3.39	–	19	–	–	–	–
Kharchenko et al.	2016	2.24	3.39	–	19	–	–	–	–
Kharchenko et al.	2013	2.24	3.39	–	19	–	–	–	–
van den Bergh	2006	2.08	3.53	–	15	–	–	–	–
Dias et al.	2002	3.50	3.26	–	20	–	–	–	–
Dambis	1999	2.84	3.45	–	63	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0434	28.8	116.38	-32.84	0.27	-2.17	3.33	65.46	0.0
OC 0435	8.4	116.38	-32.84	0.28	-2.16	3.31	-32.74	0.0
OC 0437	3.1	116.56	-32.86	0.29	-2.12	3.43	82.33	0.04

💡 Note: The % column shows the percentage of members that Haffner 15 shares with each listed object.

Visualization

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