Collinder 74

(MWSC 673; OCL 489; FSR 0973; FoF 10)

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0.91 UTI
0.78
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 184
Radius (P>50% members) 4.5 [arcmin]
  • CN 0.78 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 πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Collinder 74 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

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

Relatively close Moderate extinction Near-solar metallicity Old Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 74 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 87.164 7.38 0.366 0.968 -1.525 20.057
Li et al. 2025 87.17 7.374 0.379 1.011 -1.512 –
Hu & Soubiran 2025 87.164 7.374 – – – –
Almeida et al. 2025 87.167 7.376 – – – –
Zhang et al. 2024 87.168 7.368 – – – –
Hunt & Reffert 2024 87.168 7.368 0.36 0.964 -1.546 20.927
Cavallo et al. 2024 87.164 7.374 0.357 – – –
Hunt & Reffert 2023 87.168 7.368 0.36 0.964 -1.546 20.927
Almeida et al. 2023 87.16 7.377 – – – –
Just et al. 2023 87.14 7.381 – – – –
Jaehnig et al. 2021 87.166 7.374 0.395 0.997 -1.553 –
Rain et al. 2021 87.17 7.374 0.379 1.011 -1.512 –
Dias et al. 2021 87.167 7.376 0.372 0.995 -1.528 20.199
Cantat-Gaudin et al. 2020 87.17 7.374 0.379 1.011 -1.512 –
SΓ‘nchez et al. 2020 87.167 7.358 – 1.014 -1.662 –
Cantat-Gaudin & Anders 2020 87.17 7.374 0.379 1.011 -1.512 –
Liu & Pang 2019 87.167 7.386 0.364 0.981 -1.497 –
Soubiran et al. 2018 87.17 7.374 – – – 20.18
Bica et al. 2019 87.146 7.393 – – – –
Cantat-Gaudin et al. 2018 87.17 7.374 0.379 1.011 -1.512 –
Loktin & Popova 2017 87.15 7.381 – 0.294 -1.091 –
Kharchenko et al. 2016 87.14 7.381 – – – –
Dias et al. 2014 87.167 7.358 – 1.92 -3.0 –
Kharchenko et al. 2013 87.147 7.38 – 0.91 -3.86 –
Gozha et al. 2012 87.167 7.358 – – – –
van den Bergh 2006 87.125 7.4 – – – –
Dias et al. 2002 87.167 7.358 – 1.92 -3.0 –

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] Bfr BSS
Li et al. 2025 2.51 1.23 – 1908 -0.072 – – –
Hu & Soubiran 2025 – – – – -0.180* – – –
Almeida et al. 2025 2.15 1.21 – 2761 – 569 – –
Zhang et al. 2024 – – – – -0.215* – – –
Hunt & Reffert 2024 – – – – – 1031* – –
Cavallo et al. 2024 2.38 1.07 – 2089 0.270 – – –
Hunt & Reffert 2023 2.52 1.58 2.04 627 – – – –
Almeida et al. 2023 2.26 1.47 – 1667 -0.100 662* 0.60 –
Just et al. 2023 – – – 1230 – 235 – –
Jaehnig et al. 2021 2.49* – – – – – – –
Rain et al. 2021 2.45 1.18 – 1288 – – – 5
Dias et al. 2021 2.15 1.21 – 2761 -0.083 – – –
Cantat-Gaudin et al. 2020 2.50 0.85 – 1905 – – – –
Cantat-Gaudin & Anders 2020 2.45 – – – – – – –
Liu & Pang 2019 – – – 2190 -0.250 – – –
Soubiran et al. 2018 2.45 – – – – – – –
Cantat-Gaudin et al. 2018 2.45 – – – – – – –
Loktin & Popova 2017 3.29 1.30 – 1413 – – – –
Kharchenko et al. 2016 2.64 1.87 – 1230 – – – –
Kharchenko et al. 2013 2.64 1.87 – 1230 – – – –
Gozha et al. 2012 2.51 – – 1288 0.050 – – –
van den Bergh 2006 2.51 1.18 – 1288 – – – –
Dias et al. 2002 2.51 1.18 – 1288 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization
ℹ️
Collinder 74 UCC
Collinder 74 HUNT23
Collinder 74 CANTAT20
Galactocentric position diagram