Czernik 42

(MWSC 3650; OCL 245)

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0.71 UTI
0.76
CN
1.0
Cdens
0.5
CC3
0.65
Clit
1.0
Cdup
Nm (P>50%) 134
Core radius and density 1.0 [pc], 13 [pc-2]
C3 classification BB
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.5 Intermediate quality
  • Clit 0.65 Moderately 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
Czernik 42 is a rich, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is moderately studied in the literature.

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: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1284, e_all=0.0623.

Data
πŸ” Search references for Czernik 42 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 339.895 59.91 0.206 -3.412 -2.546 –
Almeida et al. 2025 339.91 59.909 – – – –
Hunt & Reffert 2024 339.893 59.908 0.203 -3.409 -2.545 –
Cavallo et al. 2024 339.901 59.909 0.204 – – –
Hunt & Reffert 2023 339.893 59.908 0.203 -3.409 -2.545 –
Just et al. 2023 339.897 59.915 – – – –
Dias et al. 2021 339.91 59.909 0.168 -3.364 -2.522 –
Cantat-Gaudin et al. 2020 339.896 59.908 0.182 -3.383 -2.527 –
SΓ‘nchez et al. 2020 339.95 59.915 – -3.426 -2.69 –
Cantat-Gaudin & Anders 2020 339.896 59.908 0.182 -3.383 -2.527 –
Bica et al. 2019 339.943 59.871 – – – –
Cantat-Gaudin et al. 2018 339.896 59.908 0.182 -3.383 -2.527 –
Sampedro et al. 2017 339.95 59.915 – -2.52 -3.61 –
Kharchenko et al. 2016 339.897 59.915 – – – –
Tadross 2014 339.95 59.915 – – – –
Dias et al. 2014 339.95 59.915 – -2.41 -1.56 –
Kharchenko et al. 2013 339.903 59.918 – -2.78 -2.67 –
Kharchenko et al. 2012 339.903 59.918 – -2.78 -2.67 –
Bukowiecki et al. 2011 339.917 59.913 – – – –
Dias et al. 2002 339.95 59.915 – -2.41 -1.56 –
Lynga 1987 339.96 59.876 – – – –

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– 4.0 3.86 1.92 36 0.265 576 – –
Almeida et al. 2025 3.86 3.49 – 36 – 682 – –
Hunt & Reffert 2024 4.33 4.06 1.92 86 – 1697(1) – –
Cavallo et al. 2024 4.72 3.60 – 282 0.700 – – –
Hunt & Reffert 2023 4.34 4.06 1.92 86 – – – –
Just et al. 2023 – – – 5 – 318 – –
Dias et al. 2021 3.86 3.49 – 36 -0.171 – – –
Cantat-Gaudin et al. 2020 4.43 3.35 – 71 – – – –
Kounkel et al. 2020 4.63 3.64 – 40 – – – –
Cantat-Gaudin & Anders 2020 4.74 – – – – – – –
Cantat-Gaudin et al. 2018 4.74 – – – – – – –
Kharchenko et al. 2016 4.00 3.86 – 5 – – – –
Tadross 2014 2.58 5.49 – 10 – – – –
Kharchenko et al. 2013 4.00 3.86 – 5 – – – –
Bukowiecki et al. 2012 – – – – – 470 – –
Kharchenko et al. 2012 4.00 3.86 – 5 – – – –
Bukowiecki et al. 2011 1.46(1) 1.14 – 631 – – – –
Dias et al. 2002 2.58 5.49 – 10 – – – –

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

Visualization
ℹ️
Czernik 42 UCC
Czernik 42 HUNT23
Czernik 42 CANTAT20
Galactocentric position diagram