Haffner 7

(VDBH 1; MWSC 1197; OCL 661; vdBergh-Hagen 1; ESO 428 24; FSR 1311)

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0.95 UTI
0.75
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 106
Stellar density (N50/rad) 15.9 [N/pc2]
C3 classification AA
  • CN 0.75 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Haffner 7 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, well below the mid-plane, affected by low 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.

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Haffner 7 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 110.735 -29.497 0.203 -1.551 2.945 85.784
Li et al. 2025 110.734 -29.502 0.199 -1.541 2.966 –
Hu & Soubiran 2025 110.751 -29.51 – – – –
Almeida et al. 2025 110.738 -29.503 – – – –
Hunt & Reffert 2024 110.731 -29.497 0.2 -1.539 2.945 85.741
Cavallo et al. 2024 110.751 -29.51 0.207 – – –
Hunt & Reffert 2023 110.731 -29.497 0.2 -1.539 2.945 85.741
Almeida et al. 2023 110.742 -29.507 – – – –
Just et al. 2023 110.728 -29.488 – – – –
Dias et al. 2021 110.738 -29.503 0.197 -1.548 2.921 –
Cantat-Gaudin et al. 2020 110.734 -29.502 0.199 -1.541 2.966 –
SΓ‘nchez et al. 2020 110.729 -29.5 – -1.272 3.041 –
Cantat-Gaudin & Anders 2020 110.734 -29.502 0.199 -1.541 2.966 –
Soubiran et al. 2018 110.734 -29.502 – – – 88.13
Bica et al. 2019 110.727 -29.486 – – – –
Cantat-Gaudin et al. 2018 110.734 -29.502 0.199 -1.541 2.966 –
Loktin & Popova 2017 110.715 -29.491 – -3.428 4.2 –
Kharchenko et al. 2016 110.728 -29.488 – – – –
Dias et al. 2014 110.729 -29.5 – -1.69 2.18 –
Kharchenko et al. 2013 110.733 -29.49 – -3.76 3.99 –
Dias et al. 2002 110.729 -29.5 – -1.69 2.18 –

πŸ’‘ 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] Bfrac BSS
UCC 99999– 4.215 0.81 1.93 892 -0.130 479 0.5 –
Li et al. 2025 4.35 0.75 – 564 0.056 – – –
Hu & Soubiran 2025 – – – – -0.250(5) – – –
Almeida et al. 2025 3.93 0.84 – 718 – 536 – –
Hunt & Reffert 2024 – – – – – 723(1) – –
Cavallo et al. 2024 3.10 1.20 – 912 -0.810 – – –
Hunt & Reffert 2023 4.08 0.40 1.93 838 – – – –
Almeida et al. 2023 4.02 0.81 – 689 -0.106 422(1) 0.50 –
Just et al. 2023 – – – 1000 – 133 – –
Dias et al. 2021 3.93 0.84 – 718 -0.130 – – –
Cantat-Gaudin et al. 2020 4.35 0.47 – 871 – – – –
Cantat-Gaudin & Anders 2020 4.38 – – – – – – –
Soubiran et al. 2018 4.38 – – – – – – –
Cantat-Gaudin et al. 2018 4.38 – – – – – – –
Loktin & Popova 2017 5.29 0.40 – 1047 – – – –
Kharchenko et al. 2016 1.89 1.10 – 1000 – – – –
Kharchenko et al. 2013 1.89 1.10 – 1000 – – – –
Dias et al. 2002 4.50 0.40 – 1514 – – – –

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

Visualization
ℹ️
Haffner 7 UCC
Haffner 7 HUNT23
Haffner 7 CANTAT20
Galactocentric position diagram