NGC 6823

(MWSC 3163)

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0.96 UTI
0.8
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 226
Radius (P>50% members) 3.7 [arcmin]
  • CN 0.8 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
NGC 6823 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near 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 mass parameter (see Parameters). It is very well-studied in the literature.

Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Very young

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

Cavallo et al. (2024)
Silver sample.

Data
🔍 Search references for NGC 6823 in: SciX Simbad
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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 295.795 23.305 0.455 -1.691 -5.33 12.583
Almeida et al. 2025 295.796 23.331 – – – –
Hunt & Reffert 2024 295.792 23.294 0.452 -1.694 -5.369 14.904
Celli et al. 2024 295.794 23.321 – – – –
Cavallo et al. 2024 295.792 23.325 0.452 – – –
Hunt & Reffert 2023 295.792 23.294 0.452 -1.694 -5.369 14.904
Just et al. 2023 295.78 23.297 – – – –
Jaehnig et al. 2021 295.788 23.32 0.477 -1.718 -5.317 –
Rain et al. 2021 295.794 23.321 0.446 -1.697 -5.304 –
Dias et al. 2021 295.796 23.331 0.445 -1.69 -5.299 –
Cantat-Gaudin et al. 2020 295.794 23.321 0.446 -1.697 -5.304 –
Cantat-Gaudin & Anders 2020 295.794 23.321 0.446 -1.697 -5.304 –
Cantat-Gaudin et al. 2018 295.794 23.321 0.446 -1.697 -5.304 –
Loktin & Popova 2017 295.8 23.3 – -2.688 -2.861 10.5
Kharchenko et al. 2016 295.78 23.297 – – – –
Dias et al. 2014 295.788 23.3 – -3.28 -4.97 –
Kharchenko et al. 2013 295.785 23.3 – -3.0 -4.0 10.5
Gozha et al. 2012 295.787 23.3 – – – –
Piskunov et al. 2008 295.783 23.3 – – – –
Kharchenko et al. 2007 295.78 23.3 – 0.27 – 17.0
Piskunov et al. 2007 295.783 23.3 – – – –
van den Bergh 2006 295.792 23.298 – – – –
Kharchenko et al. 2005 295.78 23.3 – -2.83 -5.07 17.0
Kharchenko et al. 2003 295.78 23.28 – -2.35 -5.78 –
Chen et al. 2003 295.745 23.32 – -1.41 -3.04 11.0
Dias et al. 2002 295.788 23.3 – -1.41 -3.04 13.59
Dambis 1999 295.787 23.3 – – – –

💡 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
Almeida et al. 2025 2.08 2.52 – 7 – 1161 – –
Hunt & Reffert 2024 – – – – – 1641* – –
Celli et al. 2024 – – – 2 – 1370 – –
Cavallo et al. 2024 1.80 2.38 – 8 0.020 – – –
Hunt & Reffert 2023 2.06 2.88 2.80 4 – – – –
Just et al. 2023 – – – 10 – 439 – –
Jaehnig et al. 2021 2.10* – – – – – – –
Rain et al. 2021 2.10 2.63 – 3 – – – 0
Dias et al. 2021 2.08 2.52 – 7 0.127 – – –
Cantat-Gaudin et al. 2020 2.33 2.22 – 2 – – – –
Cantat-Gaudin & Anders 2020 2.10 – – – – – – –
Cantat-Gaudin et al. 2018 2.10 – – – – – – –
Loktin & Popova 2017 1.89 2.61 – 7 – – – –
Kharchenko et al. 2016 1.76 2.58 – 10 – – – –
Kharchenko et al. 2013 1.76 2.58 – 10 – – – –
Gozha et al. 2012 3.18 – – 3 0.080 10000 – –
Piskunov et al. 2008 1.89 2.60 – 10 – 2838* – –
Piskunov et al. 2007 1.89 2.60 – 10 – 409 – –
van den Bergh 2006 1.89 2.60 – 7 – – – –
Kharchenko et al. 2005 1.89 2.60 – 10 – – – –
Kharchenko et al. 2003 1.89 2.02 – – – – – –
Chen et al. 2003 1.89 – – 0 – – – –
Dias et al. 2002 3.18 2.65 – 3 – – – –
Dambis 1999 1.91 2.64 – 3 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0087 10.2 295.79 23.32 0.46 -1.8 -5.3 35.52 0.03

💡 Note: The % column shows the percentage of members that NGC 6823 shares with each listed object.

Visualization
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NGC 6823 UCC
NGC 6823 HUNT23
NGC 6823 CANTAT20
Galactocentric position diagram