NGC 2323

(MWSC 1072; FoF 2079; CMa17)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 781
Stellar density (N50/rad) 93.3 [N/pc2]
C3 classification AA
  • CN 1.0 Very 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 2323 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.

Palma et al. (2025)
Classified as optical pair P544, along with UPK_447.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Richer et al. (2021)
The expected number of WDs is 26.2, 0 WD candidates found, and 0 WD candidates found in the wide search.

Rain et al. (2021)
This cluster was include in (Dias et al., 2002A&A...389..871D, Cat. B/ocl) however, parameters log(t)=7.975, Av=0.474, [Fe/H]=0.080 were taken from Bossini et al. (2019A&A...623A.108B, Cat. J/A+A/623/A108). Ahumada & Lapasset (2007A&A...463..789A, Cat. J/A+A/463/789) cite stars DR2 3051565643815916672=BD-08 1696 and DR2 3050056976422889472=BD-08 1689. BD-08 1689 is a member according to Cantat-Gaudin et al. (2018A&A...618A..93C, Cat. J/A+A18/A93), but appears just down the turnoff of the cluster, BD-08 1689 instead is not a proper motion member.

Data
πŸ” Search references for NGC 2323 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 105.695 -8.359 1.006 -0.77 -0.603 4.443
Wei et al. 2025 105.691 -8.349 1.003 -0.792 -0.621 –
Almeida et al. 2025 105.666 -8.379 – – – –
Hunt & Reffert 2024 105.705 -8.355 1.006 -0.717 -0.602 5.079
Cavallo et al. 2024 105.687 -8.36 1.006 – – –
Hunt & Reffert 2023 105.705 -8.355 1.006 -0.717 -0.602 5.079
Angelo et al. 2023 105.713 -8.369 – -0.72 -0.61 –
Cordoni et al. 2023 105.666 -8.379 0.999 -0.691 -0.62 –
Just et al. 2023 105.673 -8.368 – – – –
He et al. 2022 105.679 -8.366 1.004 -0.771 -0.604 –
Tarricq et al. 2022 105.701 -8.346 1.009 -0.83 -0.635 –
Jaehnig et al. 2021 105.705 -8.359 1.033 -0.749 -0.625 –
Santos-Silva et al. 2021 105.7 -8.33 0.97 -0.71 -0.66 –
Rain et al. 2021 105.684 -8.365 0.997 -0.688 -0.611 –
Richer et al. 2021 105.706 -8.349 0.992 -0.704 -0.624 –
Dias et al. 2021 105.666 -8.379 0.999 -0.691 -0.62 18.062
Cantat-Gaudin et al. 2020 105.684 -8.365 0.997 -0.688 -0.611 –
SΓ‘nchez et al. 2020 105.675 -8.383 – -0.829 -0.711 –
Cantat-Gaudin & Anders 2020 105.684 -8.365 0.997 -0.688 -0.611 –
Liu & Pang 2019 105.7 -8.369 0.997 -0.715 -0.633 –
Bossini et al. 2019 105.684 -8.365 – – – –
Soubiran et al. 2018 105.684 -8.365 – – – 6.79
Cantat-Gaudin et al. 2018 105.684 -8.365 0.997 -0.688 -0.611 –
Loktin & Popova 2017 105.675 -8.382 – 0.814 -0.743 5.4
Kharchenko et al. 2016 105.673 -8.368 – – – –
Dias et al. 2014 105.675 -8.383 – 0.86 -3.06 –
Kharchenko et al. 2013 105.679 -8.37 – 0.5 -1.75 5.4
Gozha et al. 2012 105.675 -8.383 – – – –
Bukowiecki et al. 2011 105.683 -8.37 – – – –
Piskunov et al. 2008 105.67 -8.372 – – – –
Kharchenko et al. 2007 105.67 -8.38 – 0.37 – 5.4
Piskunov et al. 2007 105.67 -8.372 – – – –
Ahumada & Lapasset 2007 105.675 -8.383 – – – –
van den Bergh 2006 105.7 -8.377 – – – –
Kharchenko et al. 2005 105.67 -8.37 – 0.34 -1.58 –
Kharchenko et al. 2003 105.69 -8.36 – 0.22 -1.76 –
Chen et al. 2003 105.806 -8.348 – -0.32 -1.24 9.5
Dias et al. 2002 105.675 -8.383 – 0.86 -3.06 14.7
Dambis 1999 105.698 -8.338 – – – –

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– 0.95 0.67 1.07 135 0.000 604 0.4 0
Wei et al. 2025 1.42 0.83 – 331 0.250 411 0.44 –
Almeida et al. 2025 0.95 0.68 – 425 – 1899 – –
Hunt & Reffert 2024 – – – – – 1789(1) – –
Cavallo et al. 2024 0.97 0.51 – 417 0.470 – – –
Hunt & Reffert 2023 0.94 0.58 1.07 144 – – – –
Angelo et al. 2023 0.85 0.73 – 178 0.000 3(1) – –
Cordoni et al. 2023 0.95 0.68 – 425 0.000 3557 0.36 0(1)
Just et al. 2023 – – – 180 – 255 – –
He et al. 2022 – 0.95 – 71 – – – –
Tarricq et al. 2022 0.97 – – 145 – – – –
Jaehnig et al. 2021 0.97(1) – – – – – – –
Santos-Silva et al. 2021 0.99(1) 0.91(1) – 163(1) -0.150(1) – – –
Rain et al. 2021 0.97 0.47 – 93 – – – 0
Richer et al. 2021 – 0.74 – 132 – – – –
Dias et al. 2021 0.95 0.68 – 425 0.000 – – –
Cantat-Gaudin et al. 2020 0.98 0.46 – 132 – – – –
Kounkel et al. 2020 0.95 0.63 – 162 – – – –
Cantat-Gaudin & Anders 2020 0.97 – – – – – – –
Liu & Pang 2019 – – – 48 0.250 – – –
Bossini et al. 2019 0.92 0.47 – 94 0.000 – – –
Soubiran et al. 2018 0.97 – – – – – – –
Cantat-Gaudin et al. 2018 0.97 – – – – – – –
Loktin & Popova 2017 0.89 0.68 – 127 – – – –
Kharchenko et al. 2016 0.90 0.72 – 180 – – – –
Kharchenko et al. 2013 0.90 0.72 – 180 – – – –
Bukowiecki et al. 2012 – – – – – 1357 – –
Gozha et al. 2012 0.95 – – 100 – 537 – –
Bukowiecki et al. 2011 1.24(1) 0.88 – 200 – – – –
Piskunov et al. 2008 0.88 0.66 – 135 – 670(1) – –
Piskunov et al. 2007 0.88 0.66 – 135 – 206 – –
Ahumada & Lapasset 2007 – 0.66 – 126 – – – 2
van den Bergh 2006 0.93 0.66 – 126 – – – –
Kharchenko et al. 2005 0.88 0.66 – 135 – – – –
Kharchenko et al. 2003 0.93 0.66 – – – – – –
Chen et al. 2003 0.93 – – 120 – – – –
Dias et al. 2002 0.95 0.63 – 100 – – – –
Dambis 1999 0.91 0.73 – 126 – – – –

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

Visualization
ℹ️
NGC 2323 UCC
NGC 2323 HUNT23
NGC 2323 CANTAT20
Galactocentric position diagram