Collinder 268

(VDBH 145; FSR 1644; MWSC 2103; Harvard 8; OCL 895; vdBergh-Hagen 145; ESO 096 06; MWSC 2102; FoF 65)

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0.96 UTI
0.79
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 199
Stellar density (N50/rad) 27.7 [N/pc2]
C3 classification AA
  • CN 0.79 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
Collinder 268 is a rich, very dense object of very 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, intermediate-age 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 contains blue stragglers according to at least one source.

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 268 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 199.53 -67.077 0.38 -5.506 -0.37 21.742
Li et al. 2025 199.543 -67.079 0.357 -5.48 -0.405 –
Almeida et al. 2025 199.54 -67.078 – – – –
Hunt & Reffert 2024 199.544 -67.084 0.385 -5.506 -0.371 -50.71
Cavallo et al. 2024 199.53 -67.077 0.385 – – –
Hunt & Reffert 2023 199.544 -67.084 0.385 -5.506 -0.371 -50.71
Just et al. 2023 199.556 -67.072 – – – –
Jaehnig et al. 2021 199.548 -67.079 0.38 -5.463 -0.401 –
Rain et al. 2021 199.543 -67.079 0.357 -5.48 -0.405 –
Dias et al. 2021 199.54 -67.078 0.359 -5.49 -0.403 –
Cantat-Gaudin et al. 2020 199.543 -67.079 0.357 -5.48 -0.405 –
SΓ‘nchez et al. 2020 199.554 -67.083 – -5.662 -0.462 –
Cantat-Gaudin & Anders 2020 199.543 -67.079 0.357 -5.48 -0.405 –
Liu & Pang 2019 199.503 -67.077 0.363 -5.481 -0.457 –
Bossini et al. 2019 199.543 -67.079 – – – –
Soubiran et al. 2018 199.543 -67.079 – – – -34.35
Bica et al. 2019 199.467 -67.059 – – – –
Cantat-Gaudin et al. 2018 199.543 -67.079 0.357 -5.48 -0.405 –
Loktin & Popova 2017 199.56 -67.083 – -3.913 -2.3 -27.2
Kharchenko et al. 2016 199.556 -67.072 – – – –
Dias et al. 2014 199.554 -67.083 – -2.12 -0.46 –
Kharchenko et al. 2013 199.567 -67.075 – -1.2 1.92 -27.2
Gozha et al. 2012 199.554 -67.083 – – – –
Froebrich et al. 2007 199.475 -67.058 – – – –
van den Bergh 2006 199.7 -67.2 – – – –
Dias et al. 2002 199.554 -67.083 – -2.12 -0.46 -27.18

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– 2.325 1.16 0.88 419 0.075 815 – 1.0
Li et al. 2025 2.41 1.23 – 440 0.068 – – –
Almeida et al. 2025 2.28 1.63 – 54 – 815 – –
Hunt & Reffert 2024 – – – – – 1222(1) – –
Cavallo et al. 2024 2.23 1.42 – 398 0.080 – – –
Hunt & Reffert 2023 2.37 1.20 0.88 254 – – – –
Just et al. 2023 – – – 617 – 73 – –
Jaehnig et al. 2021 2.62(1) – – – – – – –
Rain et al. 2021 2.59 0.93 – 562 – – – 1
Dias et al. 2021 2.28 1.63 – 54 0.075 – – –
Cantat-Gaudin et al. 2020 2.63 1.16 – 240 – – – –
Cantat-Gaudin & Anders 2020 2.59 – – – – – – –
Liu & Pang 2019 – – – 331 0.250 – – –
Bossini et al. 2019 2.44 1.25 – 242 0.000 – – –
Soubiran et al. 2018 2.59 – – – – – – –
Cantat-Gaudin et al. 2018 2.59 – – – – – – –
Loktin & Popova 2017 1.92 1.12 – 281 – – – –
Kharchenko et al. 2016 1.81 1.07 – 617 – – – –
Kharchenko et al. 2013 1.81 1.07 – 617 – – – –
Gozha et al. 2012 1.96 – – 574 – – – –
van den Bergh 2006 1.96 0.96 – 575 – – – –
Dias et al. 2002 1.96 0.95 – 574 – – – –

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

Visualization
ℹ️
Collinder 268 UCC
Collinder 268 HUNT23
Collinder 268 CANTAT20
Galactocentric position diagram