Haffner 19

0.90 UTI

0.76

C_N

1.0

C_dens

1.0

C_C3

0.87

C_lit

1.0

C_dup

N₅₀ (P>50% members) 135

Stellar density (N₅₀/rad) 9.1 [N/pc²]

C3 classification AA

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.87 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 19 is a rich, very dense object of very high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is well-studied in the literature.

Note: This object shares a significant percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

Very distant Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Haffner 19 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–	118.192	-26.277	0.197	-2.531	2.523	111.139
Almeida et al.	2025	118.191	-26.271	–	–	–	–
Hunt & Reffert	2024	118.185	-26.28	0.208	-2.537	2.51	111.085
Cavallo et al.	2024	118.197	-26.271	0.208	–	–	–
Hunt & Reffert	2023	118.185	-26.28	0.208	-2.537	2.51	111.085
Jaehnig et al.	2021	118.192	-26.277	0.19	-2.539	2.49	–
Rain et al.	2021	118.193	-26.274	0.169	-2.494	2.507	–
Dias et al.	2021	118.191	-26.271	0.159	-2.469	2.496	–
Cantat-Gaudin et al.	2020	118.193	-26.274	0.169	-2.494	2.507	–
Cantat-Gaudin & Anders	2020	118.193	-26.274	0.169	-2.494	2.507	–
Cantat-Gaudin et al.	2018	118.193	-26.274	0.169	-2.494	2.507	–
Loktin & Popova	2017	118.185	-26.275	–	-4.206	0.653	68.0
Dias et al.	2014	118.196	-26.283	–	-5.39	3.52	–
Gozha et al.	2012	118.196	-26.283	–	–	–	–
Kharchenko et al.	2007	118.2	-26.28	–	0.02	–	–
van den Bergh	2006	118.175	-26.25	–	–	–	–
Dias et al.	2002	118.196	-26.283	–	-2.02	1.55	68.0
Dambis	1999	118.196	-26.283	–	–	–	–

💡 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–	5.05	1.22	1.76	32	-0.055	300	–	0.0
Almeida et al.	2025	3.75	1.22	–	87	–	283	–	–
Hunt & Reffert	2024	–	–	–	–	–	317⁽¹⁾	–	–
Cavallo et al.	2024	4.04	0.97	–	195	0.100	–	–	–
Hunt & Reffert	2023	4.67	1.37	1.76	79	–	–	–	–
Jaehnig et al.	2021	5.32⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	5.05	1.18	–	4	–	–	–	0
Dias et al.	2021	3.75	1.22	–	87	-0.210	–	–	–
Cantat-Gaudin et al.	2020	5.47	0.80	–	36	–	–	–	–
Cantat-Gaudin & Anders	2020	5.05	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	5.05	–	–	–	–	–	–	–
Loktin & Popova	2017	4.60	1.27	–	15	–	–	–	–
Gozha et al.	2012	5.09	–	–	4	–	–	–	–
van den Bergh	2006	5.09	1.30	–	9	–	–	–	–
Dias et al.	2002	6.40	1.18	–	4	–	–	–	–
Dambis	1999	4.09	1.43	–	32	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Haffner 18	51.1	118.18	-26.38	0.2	-2.53	2.63	103.52	0.82

💡 Note: The % column shows the percentage of members that Haffner 19 shares with each listed object.

Visualization

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