Haffner 16

(MWSC 1355; OCL 655; ESO 493 20; FSR 1309; FoF 382)

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0.95 UTI
0.77
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 164
Stellar density (N50/rad) 63.8 [N/pc2]
C3 classification AA
  • CN 0.77 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 16 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is very well-studied in the literature.

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

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Haffner 16 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 117.585 -25.459 0.29 -2.787 3.028 76.449
Li et al. 2025 117.586 -25.458 0.293 -2.811 2.991 –
Almeida et al. 2025 117.587 -25.465 – – – –
Hunt & Reffert 2024 117.585 -25.456 0.294 -2.78 3.026 76.329
Cavallo et al. 2024 117.589 -25.465 0.293 – – –
Hunt & Reffert 2023 117.585 -25.456 0.294 -2.78 3.026 76.329
Almeida et al. 2023 117.587 -25.463 – – – –
Just et al. 2023 117.582 -25.454 – – – –
Jaehnig et al. 2021 117.585 -25.456 0.312 -2.799 3.008 –
Rain et al. 2021 117.586 -25.458 0.293 -2.811 2.991 –
Dias et al. 2021 117.587 -25.465 0.3 -2.818 2.995 –
Cantat-Gaudin et al. 2020 117.586 -25.458 0.293 -2.811 2.991 –
SΓ‘nchez et al. 2020 117.583 -25.467 – -2.851 2.925 –
Cantat-Gaudin & Anders 2020 117.586 -25.458 0.293 -2.811 2.991 –
Liu & Pang 2019 117.582 -25.48 0.288 -2.568 2.805 –
Soubiran et al. 2018 117.586 -25.458 – – – 43.64
Bica et al. 2019 117.582 -25.459 – – – –
Cantat-Gaudin et al. 2018 117.586 -25.458 0.293 -2.811 2.991 –
Loktin & Popova 2017 117.585 -25.467 – -3.4 2.03 48.7
Kharchenko et al. 2016 117.582 -25.454 – – – –
Dias et al. 2014 117.583 -25.467 – -3.4 2.03 –
Kharchenko et al. 2013 117.588 -25.457 – -3.83 4.06 48.7
Gozha et al. 2012 117.583 -25.467 – – – –
Piskunov et al. 2008 117.582 -25.459 – – – –
Kharchenko et al. 2007 117.58 -25.47 – 0.11 – 65.8
van den Bergh 2006 117.583 -25.453 – – – –
Kharchenko et al. 2005 117.58 -25.46 – -5.51 0.62 65.8
Kharchenko et al. 2003 117.57 -25.46 – -5.51 0.85 –
Dias et al. 2002 117.583 -25.467 – -3.4 2.03 65.8
Dambis 1999 117.583 -25.467 – – – –

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– 3.1 0.56 1.01 28 -0.111 446 0.82 0.0
Li et al. 2025 3.03 0.65 – 24 -0.058 – – –
Almeida et al. 2025 2.86 0.75 – 33 – 348 – –
Hunt & Reffert 2024 – – – – – 446(1) – –
Cavallo et al. 2024 2.81 0.51 – 69 -0.160 – – –
Hunt & Reffert 2023 2.92 0.35 1.01 99 – – – –
Almeida et al. 2023 2.79 0.39 – 211 -0.058 511(1) 0.82 –
Just et al. 2023 – – – 20 – 22 – –
Jaehnig et al. 2021 3.14(1) – – – – – – –
Rain et al. 2021 3.10 0.53 – 12 – – – 0
Dias et al. 2021 2.86 0.75 – 33 -0.160 – – –
Cantat-Gaudin et al. 2020 3.25 0.38 – 83 – – – –
Cantat-Gaudin & Anders 2020 3.10 – – – – – – –
Liu & Pang 2019 – – – 347 0.250 – – –
Soubiran et al. 2018 3.10 – – – – – – –
Cantat-Gaudin et al. 2018 3.10 – – – – – – –
Loktin & Popova 2017 3.17 0.54 – 12 – – – –
Kharchenko et al. 2016 2.65 0.78 – 20 – – – –
Kharchenko et al. 2013 2.65 0.78 – 20 -0.111 – – –
Gozha et al. 2012 3.17 – – 12 – 1259 – –
Piskunov et al. 2008 3.17 0.56 – 32 – – – –
van den Bergh 2006 3.17 0.56 – 12 – – – –
Kharchenko et al. 2005 3.17 0.56 – 32 – – – –
Kharchenko et al. 2003 3.12 0.56 – – – – – –
Dias et al. 2002 3.17 0.54 – 12 -0.111 – – –
Dambis 1999 3.31 0.61 – 28 – – – –

(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 0417 21.3 117.58 -25.46 0.28 -2.75 3.03 – 0.0
FSR 1308 11.6 117.57 -25.46 0.31 -2.83 3.05 – 0.08
CWNU 2123 7.9 117.48 -25.37 0.32 -2.7 2.89 – 0.08

πŸ’‘ Note: The % column shows the percentage of members that Haffner 16 shares with each listed object.

Visualization
ℹ️
Haffner 16 UCC
Haffner 16 HUNT23
Haffner 16 CANTAT20
Galactocentric position diagram