NGC 6268

(Collinder 323; VDBH 212; MWSC 2516; OCL 1002; vdBergh-Hagen 212; ESO 332 17; FoF 2242)

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0.96 UTI
0.82
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 287
Stellar density (N50/rad) 35.0 [N/pc2]
C3 classification AA
  • CN 0.82 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
NGC 6268 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above 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 absorption, age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 291 along with UBC_557.

Palma et al. (2025)
Classified as optical pair P63, along with UBC_557.

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 classes: 1.00 (50th percentile), true positive (human-assigned).

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

Ahumada & Lapasset (2007)
Selected angular diameter from (1987, Lund Catalogue of Open Cluster Data).

Data
πŸ” Search references for NGC 6268 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 255.53 -39.714 0.65 0.929 -0.796 -17.158
Li et al. 2025 255.524 -39.721 0.634 0.908 -0.781 –
Almeida et al. 2025 255.526 -39.713 – – – –
Hunt & Reffert 2024 255.527 -39.723 0.646 0.927 -0.795 -20.361
Cavallo et al. 2024 255.54 -39.708 0.646 – – –
Hunt & Reffert 2023 255.527 -39.723 0.646 0.927 -0.795 -20.361
Almeida et al. 2023 255.517 -39.701 – – – –
Just et al. 2023 255.522 -39.715 – – – –
Jaehnig et al. 2021 255.52 -39.714 0.659 0.935 -0.778 –
Rain et al. 2021 255.524 -39.721 0.634 0.908 -0.781 –
Richer et al. 2021 255.528 -39.708 0.635 0.928 -0.773 –
Dias et al. 2021 255.526 -39.713 0.639 0.894 -0.77 -14.452
Cantat-Gaudin et al. 2020 255.524 -39.721 0.634 0.908 -0.781 –
SΓ‘nchez et al. 2020 255.542 -39.728 – 0.933 -0.892 –
Cantat-Gaudin & Anders 2020 255.524 -39.721 0.634 0.908 -0.781 –
Liu & Pang 2019 255.515 -39.703 0.683 0.943 -0.765 –
Soubiran et al. 2018 255.524 -39.721 – – – -14.26
Bica et al. 2019 255.545 -39.741 – – – –
Cantat-Gaudin et al. 2018 255.524 -39.721 0.634 0.908 -0.781 –
Loktin & Popova 2017 255.54 -39.729 – 0.964 -0.046 -15.1
Kharchenko et al. 2016 255.522 -39.715 – – – –
Dias et al. 2014 255.542 -39.728 – 0.12 -1.85 –
Kharchenko et al. 2013 255.532 -39.715 – 0.9 -0.63 -15.1
Morales et al. 2013 255.542 -39.728 – – – –
Gozha et al. 2012 255.542 -39.728 – – – –
Piskunov et al. 2008 255.524 -39.729 – – – –
Kharchenko et al. 2007 255.54 -39.73 – 0.14 – –
Ahumada & Lapasset 2007 255.55 -39.733 – – – –
van den Bergh 2006 255.668 -39.738 – – – –
Kharchenko et al. 2005 255.54 -39.73 – 1.26 -0.71 –
Kharchenko et al. 2003 255.52 -39.71 – 0.8 -0.91 –
Dias et al. 2002 255.542 -39.728 – 0.12 -1.85 -15.12
Lynga 1987 255.524 -39.729 – – – –
van den Bergh & Hagen 1975 254.725 -39.667 – – – –
Sulentic et al. 1973 255.507 -39.719 – – – –

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– 1.3 1.23 0.98 210 -0.044 447 0.47 0
Liu et al. 2025 2.38 0.44 – 186 – – – –
Li et al. 2025 1.45 1.14 – 589 0.046 – – –
Almeida et al. 2025 1.30 1.54 – 257 – 447 – –
Hunt & Reffert 2024 – – – – – 1480(1) – –
Cavallo et al. 2024 1.38 1.22 – 355 0.160 – – –
Hunt & Reffert 2023 1.43 1.21 0.98 210 – – – –
Almeida et al. 2023 1.41 1.56 – 220 -0.044 536(1) 0.47 –
Just et al. 2023 – – – 447 – 29 – –
Jaehnig et al. 2021 1.52(1) – – – – – – –
Rain et al. 2021 1.51 1.26 – 40 – – – 0
Richer et al. 2021 – 1.35 – – – – – –
Dias et al. 2021 1.30 1.54 – 257 -0.153 – – –
Cantat-Gaudin et al. 2020 1.68 1.19 – 200 – – – –
Kounkel et al. 2020 1.53 1.56 – 295 – – – –
Cantat-Gaudin & Anders 2020 1.51 – – – – – – –
Liu & Pang 2019 – – – 417 -1.250 – – –
Soubiran et al. 2018 1.51 – – – – – – –
Cantat-Gaudin et al. 2018 1.51 – – – – – – –
Loktin & Popova 2017 1.04 1.22 – 18 – – – –
Kharchenko et al. 2016 1.10 1.31 – 447 – – – –
Kharchenko et al. 2013 1.10 1.31 – 447 – – – –
Morales et al. 2013 1.05 – – 224 – – – –
Gozha et al. 2012 1.08 – – 40 – 60 – –
Piskunov et al. 2008 1.03 1.23 – 174 – – – –
Ahumada & Lapasset 2007 – 1.23 – 17 – – – 0
van den Bergh 2006 1.03 1.23 – 17 – – – –
Kharchenko et al. 2005 1.03 1.23 – 174 – – – –
Kharchenko et al. 2003 1.03 1.23 – – – – – –
Dias et al. 2002 1.08 1.26 – 40 – – – –
Lynga 1987 1.10 1.23 – 25 – – – –

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

Visualization
ℹ️
NGC 6268 UCC
NGC 6268 HUNT23
NGC 6268 CANTAT20
Galactocentric position diagram