Czernik 31

(MWSC 1281; OCL 625; ESO 560 03)

Click to load Aladin Lite
0.90 UTI
0.76
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 122
Radius (P>50% members) 2.1 [arcmin]
  • CN 0.76 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 πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Czernik 31 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age 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.

Distant Moderate extinction Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Czernik 31 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 114.235 -20.522 0.302 -1.965 3.06 93.609
Almeida et al. 2025 114.232 -20.508 – – – –
Hunt & Reffert 2024 114.241 -20.522 0.297 -1.971 3.097 103.501
Celli et al. 2024 114.238 -20.515 – – – –
Cavallo et al. 2024 114.221 -20.516 0.297 – – –
Hunt & Reffert 2023 114.241 -20.522 0.297 -1.971 3.097 103.501
Almeida et al. 2023 114.229 -20.516 – – – –
Just et al. 2023 114.253 -20.523 – – – –
Dias et al. 2021 114.232 -20.508 0.302 -1.938 3.033 –
Cantat-Gaudin et al. 2020 114.238 -20.515 0.295 -1.946 3.035 –
SΓ‘nchez et al. 2020 114.246 -20.51 – -1.854 2.856 –
Cantat-Gaudin & Anders 2020 114.238 -20.515 0.295 -1.946 3.035 –
Bossini et al. 2019 114.238 -20.515 – – – –
Soubiran et al. 2018 114.238 -20.515 – – – 103.03
Bica et al. 2019 114.251 -20.508 – – – –
Cantat-Gaudin et al. 2018 114.238 -20.515 0.295 -1.946 3.035 –
Loktin & Popova 2017 114.255 -20.525 – -3.03 3.352 –
Kharchenko et al. 2016 114.253 -20.523 – – – –
Dias et al. 2014 114.246 -20.51 – -2.15 2.16 –
Kharchenko et al. 2013 114.259 -20.525 – -2.17 4.33 –
Dias et al. 2002 114.246 -20.51 – -2.15 2.16 –

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] Bfr BSS
Almeida et al. 2025 2.73 1.74 – 27 – 435 – –
Hunt & Reffert 2024 – – – – – 560* – –
Celli et al. 2024 – – – 30 – 467 – –
Cavallo et al. 2024 3.25 1.93 – 23 -0.180 – – –
Hunt & Reffert 2023 2.90 1.30 0.86 153 – – – –
Almeida et al. 2023 2.78 1.72 – 30 -0.150 576* 0.67 –
Just et al. 2023 – – – 178 – 141 – –
Dias et al. 2021 2.73 1.74 – 27 -0.110 – – –
Cantat-Gaudin et al. 2020 3.39 1.43 – 30 – – – –
Cantat-Gaudin & Anders 2020 3.09 – – – – – – –
Bossini et al. 2019 3.40 1.48 – 21 0.000 – – –
Soubiran et al. 2018 3.09 – – – – – – –
Cantat-Gaudin et al. 2018 3.09 – – – – – – –
Loktin & Popova 2017 5.00 0.91 – 25 – – – –
Kharchenko et al. 2016 2.06 0.32 – 178 – – – –
Kharchenko et al. 2013 2.06 0.32 – 178 – – – –
Dias et al. 2002 3.20 1.49 – 158 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0404 23.0 114.24 -20.53 0.32 -1.95 3.06 – 0.0

πŸ’‘ Note: The % column shows the percentage of members that Czernik 31 shares with each listed object.

Visualization
ℹ️
Czernik 31 UCC
Czernik 31 HUNT23
Czernik 31 CANTAT20
Galactocentric position diagram