King 23
(MWSC 1190; Czernik 28; OCL 552; FSR 1121; FoF 584)
0.89
UTI
0.77
CN
1.0
Cdens
0.75
CC3
0.97
Clit
1.0
Cdup
Stellar density (N50/rad)
11.3 [N/pc2]
- CN 0.77 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.97 Very well-studied
- Cdup 1.0 Unique
π₯ Members
π Colab
π¬ Bayestar19
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
MOCA
π CDS
π Simbad
π CDS (Ξ±, Ξ΄)
π Simbad (Ξ±, Ξ΄)
Overview
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 contains blue stragglers according to at least one source.
Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999β | 110.463 | -0.988 | 0.279 | -0.479 | -0.88 | 53.085 |
| Otto et al. | 2026 | 110.462 | -0.99 | β | -0.46 | -0.88 | 53.6 |
| Li et al. | 2025 | 110.459 | -0.988 | 0.279 | -0.457 | -0.879 | β |
| Hu & Soubiran | 2025 | 110.462 | -0.99 | β | β | β | β |
| Almeida et al. | 2025 | 110.46 | -0.994 | β | β | β | β |
| Zhang et al. | 2024 | 110.462 | -0.99 | β | β | β | β |
| 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 | β | β | β |
| Hunt & Reffert | 2023 | 110.462 | -0.99 | 0.28 | -0.496 | -0.857 | 43.003 |
| Just et al. | 2023 | 110.44 | -0.981 | β | β | β | β |
| Jadhav & Subramaniam | 2021 | 110.459 | -0.988 | β | β | β | β |
| Netopil et al. | 2022 | 110.459 | -0.988 | 0.272 | -0.444 | -0.895 | 54.01 |
| 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 | β |
| SΓ‘nchez et al. | 2020 | 110.446 | -0.985 | β | -0.453 | -0.9 | β |
| Zhong et al. | 2020 | 110.459 | -0.988 | β | -0.457 | -0.879 | 51.82 |
| Cantat-Gaudin & Anders | 2020 | 110.459 | -0.988 | 0.279 | -0.457 | -0.879 | β |
| Liu & Pang | 2019 | 110.472 | -0.974 | 0.277 | -0.543 | -0.687 | β |
| Soubiran et al. | 2018 | 110.459 | -0.988 | β | β | β | 54.01 |
| Bica et al. | 2019 | 110.447 | -0.976 | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 110.459 | -0.988 | 0.279 | -0.457 | -0.879 | β |
| Dias et al. | 2018 | β | β | β | -0.8 | -1.4 | β |
| Loktin & Popova | 2017 | 110.445 | -0.983 | β | 4.257 | -7.848 | β |
| Sampedro et al. | 2017 | 110.446 | -0.985 | -2.68 | 3.45 | β | β |
| Kharchenko et al. | 2016 | 110.44 | -0.981 | β | β | β | β |
| Tadross | 2014 | 110.446 | -0.985 | β | β | β | β |
| Dias et al. | 2014 | 110.446 | -0.985 | β | -2.15 | 2.25 | β |
| Kharchenko et al. | 2013 | 110.446 | -0.983 | β | 4.69 | -6.13 | β |
| Bukowiecki et al. | 2011 | 110.454 | 0.978 | β | β | β | β |
| Dias et al. | 2002 | 110.446 | -0.985 | β | -2.15 | 2.25 | β |
| Lynga | 1987 | 110.461 | -0.98 | β | β | β | β |
π‘ 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 | 99999β | 3.21 | 0.445 | 0.93 | 1180 | -0.130 | 511 | β | 5 |
| Otto et al. | 2026 | β | β | β | 1950 | -0.040(15) | β | β | β |
| Li et al. | 2025 | 3.18 | 0.28 | β | 1761 | -0.072 | β | β | β |
| Hu & Soubiran | 2025 | β | β | β | β | -0.170(5) | β | β | β |
| Almeida et al. | 2025 | 3.10 | 0.35 | β | 1862 | β | 511 | β | β |
| Zhang et al. | 2024 | β | β | β | β | -0.112(1) | β | β | β |
| Hunt & Reffert | 2024 | β | β | β | β | β | 666(1) | β | β |
| Cavallo et al. | 2024 | 2.79 | 0.66 | β | 1288 | -0.380 | β | β | β |
| Hunt & Reffert | 2023 | 3.26 | 0.09 | 0.93 | 1180 | β | β | β | β |
| Just et al. | 2023 | β | β | β | 891 | β | 457 | β | β |
| Jadhav & Subramaniam | 2021 | 3.13 | 0.17 | β | 1950 | β | 834 | β | 5(1) |
| Netopil et al. | 2022 | 3.68(1) | 0.35 | β | 1778 | -0.180(1) | β | β | β |
| Dias et al. | 2021 | 3.10 | 0.35 | β | 1862 | -0.181 | β | β | β |
| Cantat-Gaudin et al. | 2020 | 3.13 | 0.17 | β | 1950 | β | β | β | β |
| Kounkel et al. | 2020 | 3.75 | 0.48 | β | 891 | β | β | β | β |
| Zhong et al. | 2020 | 3.25(1) | 0.66 | β | 8950 | -0.130 | β | β | β |
| Cantat-Gaudin & Anders | 2020 | 3.25 | β | β | β | β | β | β | β |
| Liu & Pang | 2019 | β | β | β | 692 | 0.500 | β | β | β |
| Soubiran et al. | 2018 | 3.25 | β | β | β | β | β | β | β |
| Cantat-Gaudin et al. | 2018 | 3.25 | β | β | β | β | β | β | β |
| Loktin & Popova | 2017 | 3.66 | 0.52 | β | 955 | β | β | β | β |
| Kharchenko et al. | 2016 | 3.21 | 0.66 | β | 891 | β | β | β | β |
| Tadross | 2014 | 3.11 | 0.50 | β | 890 | β | β | β | β |
| Kharchenko et al. | 2013 | 3.21 | 0.66 | β | 891 | β | β | β | β |
| Bukowiecki et al. | 2012 | β | β | β | β | β | 284 | β | β |
| Bukowiecki et al. | 2011 | 2.96(1) | 0.41 | β | 1000 | β | β | β | β |
| Dias et al. | 2002 | 3.11 | 0.50 | β | 891 | β | β | β | β |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.
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).