King 11

(MWSC 3759; OCL 279; FSR 0467; FoF 609)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 1192
Core radius and density 1.4 [pc], 36 [pc-2]
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
King 11 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a very massive, near-solar metallicity, old 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.

Note: This object contains blue stragglers according to at least one source.

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

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.69 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.69 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.0235, e_all=0.0756.

Rain et al. (2021)
The red limit of the straggler area is BP-RP=1.8. This object probably suffers from differential reddening. We suggest exploring this effect in future works. An important number of binaries around the turnoff is present. Apparently, star Gaia DR2 2214223011673276288 is a massive straggler.

Data
πŸ” Search references for King 11 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 356.908 68.635 0.306 -3.381 -0.671 -24.484
Bijavara Seshashayana et al. 2025 356.92 68.608 – – – –
Li et al. 2025 356.912 68.636 0.262 -3.358 -0.643 –
Almeida et al. 2025 356.92 68.635 – – – –
Hunt & Reffert 2024 356.91 68.636 0.306 -3.38 -0.667 -25.639
Cavallo et al. 2024 356.902 68.635 0.301 – – –
Hunt & Reffert 2023 356.91 68.636 0.306 -3.38 -0.667 -25.639
Just et al. 2023 356.93 68.645 – – – –
Jadhav & Subramaniam 2021 356.912 68.636 – – – –
Jaehnig et al. 2021 356.897 68.636 0.285 -3.364 -0.661 –
Rain et al. 2021 356.912 68.636 0.262 -3.358 -0.643 –
Dias et al. 2021 356.92 68.635 0.267 -3.401 -0.626 -34.755
Cantat-Gaudin et al. 2020 356.912 68.636 0.262 -3.358 -0.643 –
SΓ‘nchez et al. 2020 356.95 68.633 – -3.492 -0.545 –
Cantat-Gaudin & Anders 2020 356.912 68.636 0.262 -3.358 -0.643 –
Liu & Pang 2019 356.921 68.638 0.299 -3.34 -0.602 –
Soubiran et al. 2018 356.912 68.636 – – – -24.61
Bica et al. 2019 356.906 68.642 – – – –
Cantat-Gaudin et al. 2018 356.912 68.636 0.262 -3.358 -0.643 –
Loktin & Popova 2017 356.955 68.633 – -4.356 -5.076 -35.0
Sampedro et al. 2017 356.95 68.633 – -1.69 -3.09 –
Kharchenko et al. 2016 356.93 68.645 – – – –
Netopil et al. 2016 356.95 68.633 – – – –
Dias et al. 2014 356.95 68.633 – -1.92 -3.84 –
Kharchenko et al. 2013 356.94 68.648 – -4.94 -4.76 -35.0
Gozha et al. 2012 356.95 68.633 – – – –
Kharchenko et al. 2012 356.94 68.648 – -4.94 -4.76 -35.0
Bukowiecki et al. 2011 356.892 68.637 – – – –
Kharchenko et al. 2007 356.95 68.63 – 0.04 – –
Ahumada & Lapasset 2007 356.95 68.633 – – – –
van den Bergh 2006 356.95 68.633 – – – –
Chen et al. 2003 356.946 68.625 – – – –
Dias et al. 2002 356.95 68.633 – -1.92 -3.84 -35.0
Lynga 1987 356.946 68.625 – – – –

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– 2.96 3.02 1.85 2089 -0.270 6404 – 18
Bijavara Seshashayana et al. 2025 – 2.67 – 4470 -0.270(14) – – –
Li et al. 2025 2.85 3.00 – 4274 0.352 – – –
Almeida et al. 2025 2.93 3.02 – 3548 – 5712 – –
Hunt & Reffert 2024 2.99 3.68 1.85 1242 – 7096(1) – –
Cavallo et al. 2024 2.81 3.61 – 1585 -0.660 – – –
Hunt & Reffert 2023 2.99 3.68 1.85 1242 – – – –
Just et al. 2023 – – – 2089 – 4406 – –
Jadhav & Subramaniam 2021 3.10 2.67 – 4467 – 18202 – 10(1)
Jaehnig et al. 2021 3.48(1) – – – – – – –
Rain et al. 2021 3.43 4.01 – 1096 – – – 18
Dias et al. 2021 2.93 3.02 – 3548 -0.176 – – –
Cantat-Gaudin et al. 2020 3.10 2.67 – 4467 – – – –
Kounkel et al. 2020 3.28 2.71 – 2188 – – – –
Cantat-Gaudin & Anders 2020 3.43 – – – – – – –
Liu & Pang 2019 – – – 2090 -0.500 – – –
Soubiran et al. 2018 3.43 – – – – – – –
Cantat-Gaudin et al. 2018 3.43 – – – – – – –
Loktin & Popova 2017 2.49 3.65 – 1178 – – – –
Kharchenko et al. 2016 2.85 2.99 – 2089 – – – –
Netopil et al. 2016 9.47 – – 3590 – – – –
Kharchenko et al. 2013 2.85 2.99 – 2089 -0.270 – – –
Gozha et al. 2012 2.89 – – 1117 -0.270 – – –
Kharchenko et al. 2012 2.85 2.99 – 2089 -0.270 – – –
Bukowiecki et al. 2011 3.48(1) 2.30 – 2512 – – – –
Paunzen et al. 2010 – – – – -0.340 – – –
Ahumada & Lapasset 2007 – 4.01 – 1122 – – – 27
van den Bergh 2006 2.89 4.01 – 1122 – – – –
Chen et al. 2003 2.89 4.01 – 1110 -0.230(1) – – –
Dias et al. 2002 2.89 4.01 – 1117 -0.270 – – –

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

Visualization
ℹ️
King 11 UCC
King 11 HUNT23
King 11 CANTAT20
Galactocentric position diagram