King 23

(MWSC 1190; Czernik 28; OCL 552; FSR 1121; FoF 584)

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0.90 UTI
0.77
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 142
Stellar density (N50/rad) 11.3 [N/pc2]
C3 classification AB
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 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
King 23 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is very well-studied in the literature.

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

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for King 23 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 110.463 -0.988 0.279 -0.479 -0.88 53.085
Li et al. 2025 110.459 -0.988 0.279 -0.457 -0.879 –
Hu & Soubiran 2025 110.462 -0.99 – – – –
Almeida et al. 2025 110.46 -0.994 – – – –
Zhang et al. 2024 110.462 -0.99 – – – –
Hunt & Reffert 2024 110.462 -0.99 0.28 -0.496 -0.857 43.003
Cavallo et al. 2024 110.462 -0.99 0.283 – – –
Hunt & Reffert 2023 110.462 -0.99 0.28 -0.496 -0.857 43.003
Just et al. 2023 110.44 -0.981 – – – –
Dias et al. 2021 110.46 -0.994 0.283 -0.467 -0.885 54.093
Cantat-Gaudin et al. 2020 110.459 -0.988 0.279 -0.457 -0.879 –
SΓ‘nchez et al. 2020 110.446 -0.985 – -0.453 -0.9 –
Cantat-Gaudin & Anders 2020 110.459 -0.988 0.279 -0.457 -0.879 –
Liu & Pang 2019 110.472 -0.974 0.277 -0.543 -0.687 –
Soubiran et al. 2018 110.459 -0.988 – – – 54.01
Bica et al. 2019 110.447 -0.976 – – – –
Cantat-Gaudin et al. 2018 110.459 -0.988 0.279 -0.457 -0.879 –
Loktin & Popova 2017 110.445 -0.983 – 4.257 -7.848 –
Kharchenko et al. 2016 110.44 -0.981 – – – –
Dias et al. 2014 110.446 -0.985 – -2.15 2.25 –
Kharchenko et al. 2013 110.446 -0.983 – 4.69 -6.13 –
Dias et al. 2002 110.446 -0.985 – -2.15 2.25 –

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– 3.21 0.425 0.93 1068 -0.141 511 – –
Li et al. 2025 3.18 0.28 – 1761 -0.072 – – –
Hu & Soubiran 2025 – – – – -0.170(5) – – –
Almeida et al. 2025 3.10 0.35 – 1862 – 511 – –
Zhang et al. 2024 – – – – -0.112(1) – – –
Hunt & Reffert 2024 – – – – – 666(1) – –
Cavallo et al. 2024 2.79 0.66 – 1288 -0.380 – – –
Hunt & Reffert 2023 3.26 0.09 0.93 1180 – – – –
Just et al. 2023 – – – 891 – 457 – –
Dias et al. 2021 3.10 0.35 – 1862 -0.181 – – –
Cantat-Gaudin et al. 2020 3.13 0.17 – 1950 – – – –
Cantat-Gaudin & Anders 2020 3.25 – – – – – – –
Liu & Pang 2019 – – – 692 0.500 – – –
Soubiran et al. 2018 3.25 – – – – – – –
Cantat-Gaudin et al. 2018 3.25 – – – – – – –
Loktin & Popova 2017 3.66 0.51 – 955 – – – –
Kharchenko et al. 2016 3.21 0.64 – 891 – – – –
Kharchenko et al. 2013 3.21 0.64 – 891 – – – –
Dias et al. 2002 3.11 0.50 – 891 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0363 29.6 110.45 -0.99 0.28 -0.48 -0.87 51.05 0.0

πŸ’‘ Note: The % column shows the percentage of members that King 23 shares with each listed object.

Visualization
ℹ️
King 23 UCC
King 23 HUNT23
King 23 CANTAT20
Galactocentric position diagram