Collinder 272

(MWSC 2128; OCL 904; ESO 132 09; FoF 428)

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0.97 UTI
0.86
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 395
Core radius and density 2.1 [pc], 6.4 [pc-2]
C3 classification AA
  • CN 0.86 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 272 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 moderate extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption, age, and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object shares a small percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

Li et al. (2026)
Tidal & Core radii: r_t=44+/-19.3 [pc], r_c=0.53+/-0.0 [pc]; stars within r_t: N~409

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 128 along with CWNU_2888, and of multiple system 40 along with CWNU_2888 and UBC_292.

Palma et al. (2025)
Part of multiple system G22, along with HSC_2582 and HSC_2602.

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

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=0.0283, e_all=0.0366.

Piecka & Paunzen (2021)
Belongs to cluster aggregate 'Agg22' along with NGC 5168.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Data
πŸ” Search references for Collinder 272 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 202.604 -61.325 0.445 -3.477 -1.796 -17.542
Li et al. 2026 202.6 -61.32 – – – –
Liu et al. 2025 202.57 -61.33 0.45 -3.48 -1.77 -43.04
Schweers & McSwain 2026 202.6 -61.32 – – – –
Li et al. 2025 202.586 -61.319 0.414 -3.441 -1.798 –
Wei et al. 2025 202.668 -61.338 0.447 -3.448 -1.72 –
Almeida et al. 2025 202.577 -61.321 – – – –
Hunt & Reffert 2024 202.575 -61.33 0.451 -3.479 -1.77 -43.042
Cavallo et al. 2024 202.579 -61.317 0.451 – – –
Hunt & Reffert 2023 202.575 -61.33 0.451 -3.479 -1.77 -43.042
Almeida et al. 2023 202.585 -61.319 – – – –
Just et al. 2023 202.572 -61.332 – – – –
Jaehnig et al. 2021 202.554 -61.3 0.451 -3.451 -1.821 –
Rain et al. 2021 202.586 -61.319 0.414 -3.441 -1.798 –
Dias et al. 2021 202.577 -61.321 0.425 -3.449 -1.804 -5.821
Cantat-Gaudin et al. 2020 202.586 -61.319 0.414 -3.441 -1.798 –
SΓ‘nchez et al. 2020 202.608 -61.317 – -3.479 -1.77 –
Cantat-Gaudin & Anders 2020 202.586 -61.319 0.414 -3.441 -1.798 –
Liu & Pang 2019 202.596 -61.33 0.44 -3.424 -1.767 –
Dias et al. 2019 202.608 -61.317 0.42 -3.462 -1.861 -48.4
Soubiran et al. 2018 202.586 -61.319 – – – -4.59
Bica et al. 2019 202.623 -61.327 – – – –
Cantat-Gaudin et al. 2018 202.586 -61.319 0.414 -3.441 -1.798 –
Dias et al. 2018 – – – -5.96 -2.15 –
Loktin & Popova 2017 202.605 -61.317 – -4.5 -2.0 -32.2
Sampedro et al. 2017 202.608 -61.317 – -5.2 -2.26 –
Dias et al. 2016 202.608 -61.317 – -4.5 -2.0 -32.2
Kharchenko et al. 2016 202.572 -61.332 – – – –
Netopil et al. 2016 202.608 -61.317 – – – –
Dias et al. 2014 202.608 -61.317 – -5.17 -2.59 –
Kharchenko et al. 2013 202.582 -61.335 – -4.5 -2.0 -32.2
Morales et al. 2013 202.608 -61.317 – – – –
Gozha et al. 2012 202.608 -61.317 – – – –
Bukowiecki et al. 2011 202.592 -61.319 – – – –
Kharchenko et al. 2009 202.599 -61.319 – – – –
Piskunov et al. 2008 202.599 -61.319 – – – –
Ahumada & Lapasset 2007 202.6 -61.317 – – – –
van den Bergh 2006 202.6 -61.317 – – – –
Kharchenko et al. 2005 202.6 -61.32 – -3.81 -2.39 –
Kharchenko et al. 2003 202.63 -61.3 – -3.83 -1.76 –
Dias et al. 2002 202.608 -61.317 – -2.48 -2.56 –
Lynga 1987 202.645 -61.265 – – – –
Alter et al. 1970 202.645 -61.265 – – – –

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– 2.07 1.48 1.03 17 -0.080 1322 0.515 0
Liu et al. 2025 3.80 0.52 – 35 – – – –
Schweers & McSwain 2026 2.48 – – 50 – – – –
Li et al. 2025 1.84 1.40 – 31 -0.149 – – –
Wei et al. 2025 2.33 1.50 – 82 0.000 3498 0.46 –
Almeida et al. 2025 1.89 1.50 – 25 – 1322 – –
Hunt & Reffert 2024 2.07 1.36 1.03 46 – 1534(1) – –
Cavallo et al. 2024 1.74 1.43 – 95 -0.110 – – –
Hunt & Reffert 2023 2.07 1.36 1.03 46 – – – –
Almeida et al. 2023 2.04 1.54 – 30 0.130 1316(1) 0.57 –
Just et al. 2023 – – – 10 – 467 – –
Jaehnig et al. 2021 2.21(1) – – – – – – –
Rain et al. 2021 2.26 1.89 – 10 – – – 0
Dias et al. 2021 1.89 1.50 – 25 -0.049 – – –
Cantat-Gaudin et al. 2020 2.24 1.29 – 46 – – – –
Kounkel et al. 2020 2.28 1.15 – 166 – – – –
Cantat-Gaudin & Anders 2020 2.26 – – – – – – –
Liu & Pang 2019 – – – 117 0.250 – – –
Dias et al. 2019 1.65 1.61 – 23 -0.705 – – –
Soubiran et al. 2018 2.26 – – – – – – –
Cantat-Gaudin et al. 2018 2.26 – – – – – – –
Loktin & Popova 2017 2.04 1.48 – 17 – – – –
Dias et al. 2016 2.10 1.91 – 10 0.060 – – –
Kharchenko et al. 2016 2.10 1.91 – 10 – – – –
Netopil et al. 2016 6.87 – – 10 – – – –
Kharchenko et al. 2013 2.10 1.91 – 10 – – – –
Morales et al. 2013 2.05 – – 17 – – – –
Bukowiecki et al. 2012 – – – – – 637 – –
Gozha et al. 2012 2.04 – – 17 -0.400 1445 – –
Bukowiecki et al. 2011 2.13(1) 1.36 – 22 – – – –
Paunzen et al. 2010 – – – – -0.400 – – –
Kharchenko et al. 2009 2.04 1.48 – 10 – – – –
Piskunov et al. 2008 2.04 1.48 – 10 – – – –
Ahumada & Lapasset 2007 – 1.48 – 17 – – – 0
van den Bergh 2006 2.04 1.48 – 17 – – – –
Kharchenko et al. 2005 2.04 1.48 – 10 – – – –
Kharchenko et al. 2003 2.04 1.26 – – – – – –
Dias et al. 2002 2.04 1.48 – 17 – – – –
Lynga 1987 2.90 2.74 – 2 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
Hogg 16 10.9 202.32 -61.24 0.45 -3.49 -1.65 -75.22 0.6

πŸ’‘ Note: The % column shows the percentage of members that Collinder 272 shares with each listed object.

Visualization
ℹ️
Collinder 272 UCC
Collinder 272 HUNT23
Collinder 272 CANTAT20
Galactocentric position diagram