Collinder 43

(NGC 1444; MWSC 308; OCL 394)

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0.90 UTI
0.76
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 121
Stellar density (N50/rad) 12.9 [N/pc2]
C3 classification AB
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 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
Collinder 43 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 43 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 57.354 52.657 0.864 -0.762 -1.837 -6.105
Li et al. 2025 57.361 52.658 0.832 -0.746 -1.829 –
Almeida et al. 2025 57.344 52.651 – – – –
Zhang et al. 2024 57.358 52.655 – – – –
Hunt & Reffert 2024 57.358 52.655 0.874 -0.802 -1.844 -10.062
Celli et al. 2024 57.361 52.658 – – – –
Cavallo et al. 2024 57.352 52.647 0.875 – – –
Hunt & Reffert 2023 57.358 52.655 0.874 -0.802 -1.844 -10.062
Just et al. 2023 57.338 52.638 – – – –
He et al. 2022 57.344 52.643 0.869 -0.767 -1.855 –
Jaehnig et al. 2021 57.352 52.659 0.875 -0.77 -1.852 –
Rain et al. 2021 57.361 52.658 0.832 -0.746 -1.829 –
Dias et al. 2021 57.344 52.651 0.834 -0.816 -1.838 –
Cantat-Gaudin et al. 2020 57.361 52.658 0.832 -0.746 -1.829 –
SΓ‘nchez et al. 2020 57.354 52.658 – -0.695 -1.953 –
Cantat-Gaudin & Anders 2020 57.361 52.658 0.832 -0.746 -1.829 –
Soubiran et al. 2018 57.361 52.658 – – – -36.9
Bica et al. 2019 57.341 52.642 – – – –
Cantat-Gaudin et al. 2018 57.361 52.658 0.832 -0.746 -1.829 –
Loktin & Popova 2017 57.36 52.658 – -0.067 -2.104 2.0
Kharchenko et al. 2016 57.338 52.638 – – – –
Dias et al. 2014 57.354 52.658 – -2.51 -3.61 –
Kharchenko et al. 2013 57.349 52.64 – -2.26 -4.2 2.0
Kharchenko et al. 2012 57.349 52.64 – -2.26 -4.2 2.0
Kharchenko et al. 2007 57.36 52.66 – 0.03 – –
van den Bergh 2006 57.35 52.667 – – – –
Dias et al. 2002 57.354 52.658 – 2.34 -1.95 2.0

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– 1.16 2.01 1.58 10 0.011 112 – 2.0
Li et al. 2025 0.99 2.09 – 11 -0.074 – – –
Almeida et al. 2025 1.10 2.01 – 14 – 92 – –
Zhang et al. 2024 – – – – -0.158(1) – – –
Hunt & Reffert 2024 – – – – – 397(1) – –
Celli et al. 2024 – – – 10 – 132 – –
Cavallo et al. 2024 1.17 1.83 – 9 0.300 – – –
Hunt & Reffert 2023 1.10 1.95 1.58 7 – – – –
Just et al. 2023 – – – 7 – 40 – –
He et al. 2022 – 2.25 – 10 – – – –
Jaehnig et al. 2021 1.13(1) – – – – – – –
Rain et al. 2021 1.16 2.20 – 91 – – – 2
Dias et al. 2021 1.10 2.01 – 14 0.096 – – –
Cantat-Gaudin et al. 2020 1.17 1.80 – 10 – – – –
Cantat-Gaudin & Anders 2020 1.16 – – – – – – –
Soubiran et al. 2018 1.16 – – – – – – –
Cantat-Gaudin et al. 2018 1.16 – – – – – – –
Loktin & Popova 2017 1.22 2.18 – 84 – – – –
Kharchenko et al. 2016 1.30 1.86 – 7 – – – –
Kharchenko et al. 2013 1.30 1.86 – 7 – – – –
Kharchenko et al. 2012 1.30 1.86 – 7 – – – –
van den Bergh 2006 1.20 2.20 – 91 – – – –
Dias et al. 2002 1.20 2.21 – 92 – – – –

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

Visualization
ℹ️
Collinder 43 UCC
Collinder 43 HUNT23
Collinder 43 CANTAT20
Galactocentric position diagram