Haffner 3

(MWSC 1081; OCL 556; FoF 192)

Click to load Aladin Lite
0.79 UTI
0.79
CN
1.0
Cdens
0.75
CC3
0.71
Clit
1.0
Cdup
Nm (P>50%) 219
Core radius and density 1.2 [pc], 8.0 [pc-2]
C3 classification AB
  • CN 0.79 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.71 Moderately 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 3 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate 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 moderately studied in the literature.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.206, e_all=0.3963.

Piatti et al. (2011)
Not a genuine open cluster.

Dias et al. (2002)
No cluster (Piatti, A. E.; ClariΓ‘, J. J.; Ahumada, A. V. 2011, NewA 16, 161); cat V3.5 (Jan 2016)

Data
πŸ” Search references for Haffner 3 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 106.026 -6.13 0.374 -1.174 -0.878 38.709
Li et al. 2025 106.027 -6.133 0.379 -1.179 -0.906 –
Hu & Soubiran 2025 106.027 -6.118 – – – –
Almeida et al. 2025 106.027 -6.126 – – – –
Hunt & Reffert 2024 106.021 -6.14 0.363 -1.169 -0.873 45.899
Cavallo et al. 2024 106.027 -6.118 0.368 – – –
Hunt & Reffert 2023 106.021 -6.14 0.363 -1.169 -0.873 45.899
Almeida et al. 2023 106.029 -6.133 – – – –
Just et al. 2023 106.021 -6.128 – – – –
Jadhav & Subramaniam 2021 106.027 -6.133 – – – –
Dias et al. 2021 106.027 -6.126 0.382 -1.168 -0.896 54.428
Cantat-Gaudin et al. 2020 106.027 -6.133 0.379 -1.179 -0.906 –
Cantat-Gaudin & Anders 2020 106.027 -6.133 0.379 -1.179 -0.906 –
Liu & Pang 2019 106.028 -6.122 0.38 -1.123 -0.744 –
Bossini et al. 2019 106.027 -6.133 – – – –
Soubiran et al. 2018 106.027 -6.133 – – – 54.3
Bica et al. 2019 106.021 -6.123 – – – –
Cantat-Gaudin et al. 2018 106.027 -6.133 0.379 -1.179 -0.906 –
Dib et al. 2018 106.027 -6.13 – – – –
Kharchenko et al. 2016 106.021 -6.128 – – – –
Kharchenko et al. 2013 106.027 -6.13 – 0.85 -0.32 –
Bukowiecki et al. 2011 106.037 -6.125 – – – –
Lynga 1987 106.035 -6.127 – – – –

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– 2.41 1.195 0.59 437 -0.115 280 0.71 0
Li et al. 2025 2.31 1.21 – 607 -0.151 – – –
Hu & Soubiran 2025 – – – – -0.200(5) – – –
Almeida et al. 2025 2.33 1.46 – 352 – 286 – –
Hunt & Reffert 2024 2.41 1.00 0.59 495 – 791(1) – –
Cavallo et al. 2024 2.69 0.73 – 912 0.730 – – –
Hunt & Reffert 2023 2.41 1.00 0.59 494 – – – –
Almeida et al. 2023 2.33 1.33 – 527 -0.142 275(1) 0.71 –
Just et al. 2023 – – – 398 – 68 – –
Jadhav & Subramaniam 2021 2.51 0.79 – 589 – 216 – 0(1)
Dias et al. 2021 2.33 1.46 – 352 -0.115 – – –
Cantat-Gaudin et al. 2020 2.51 0.79 – 589 – – – –
Kounkel et al. 2020 2.47 1.18 – 490 – – – –
Cantat-Gaudin & Anders 2020 2.45 – – – – – – –
Liu & Pang 2019 – – – 417 0.000 – – –
Bossini et al. 2019 2.76 1.14 – 437 0.000 – – –
Soubiran et al. 2018 2.45 – – – – – – –
Cantat-Gaudin et al. 2018 2.45 – – – – – – –
Dib et al. 2018 1.93 – – 398 – – – –
Kharchenko et al. 2016 1.93 1.25 – 398 – – – –
Kharchenko et al. 2013 1.93 1.25 – 398 – – – –
Bukowiecki et al. 2012 – – – – – 469 – –
Bukowiecki et al. 2011 1.59(1) 1.48 – 79 – – – –

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

Visualization
ℹ️
Haffner 3 UCC
Haffner 3 HUNT23
Haffner 3 CANTAT20
Galactocentric position diagram