Collinder 400

(NGC 6802; MWSC 3134; OCL 114; FSR 0141)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 639
Stellar density (N50/rad) 84.6 [N/pc2]
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
Collinder 400 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 moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~3.05 kpc) differs significantly from the median photometric distance (~2.29 kpc).

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

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 400 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 292.648 20.263 0.328 -2.842 -6.456 12.587
Li et al. 2025 292.651 20.262 0.309 -2.814 -6.438 –
Hu & Soubiran 2025 292.657 20.262 – – – –
Almeida et al. 2025 292.655 20.261 – – – –
Hunt & Reffert 2024 292.646 20.258 0.326 -2.847 -6.455 20.643
Cavallo et al. 2024 292.657 20.262 0.328 – – –
Hunt & Reffert 2023 292.646 20.258 0.326 -2.847 -6.455 20.643
Just et al. 2023 292.646 20.27 – – – –
Dias et al. 2021 292.655 20.261 0.314 -2.814 -6.445 12.752
Cantat-Gaudin et al. 2020 292.651 20.262 0.309 -2.814 -6.438 –
SΓ‘nchez et al. 2020 292.646 20.262 – -2.768 -6.408 –
Cantat-Gaudin & Anders 2020 292.651 20.262 0.309 -2.814 -6.438 –
Soubiran et al. 2018 292.651 20.262 – – – 11.82
Bica et al. 2019 292.649 20.254 – – – –
Cantat-Gaudin et al. 2018 292.651 20.262 0.309 -2.814 -6.438 –
Loktin & Popova 2017 292.65 20.262 – -2.678 -5.207 12.4
Kharchenko et al. 2016 292.646 20.27 – – – –
Dias et al. 2014 292.646 20.262 – -1.82 -4.3 –
Kharchenko et al. 2013 292.651 20.272 – -2.82 -4.41 –
van den Bergh 2006 292.65 20.267 – – – –
Dias et al. 2002 292.646 20.262 – -1.82 -4.3 12.4

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– 2.29 2.63 0.94 750 -0.030 2878 – –
Li et al. 2025 2.33 2.80 – 760 0.154 – – –
Hu & Soubiran 2025 – – – – -0.030(5) – – –
Almeida et al. 2025 2.29 2.86 – 646 – 2878 – –
Hunt & Reffert 2024 – – – – – 6074(1) – –
Cavallo et al. 2024 2.27 3.29 – 513 -0.070 – – –
Hunt & Reffert 2023 2.78 3.06 0.94 342 – – – –
Just et al. 2023 – – – 902 – 310 – –
Dias et al. 2021 2.29 2.86 – 646 -0.100 – – –
Cantat-Gaudin et al. 2020 2.75 2.37 – 661 – – – –
Cantat-Gaudin & Anders 2020 2.96 – – – – – – –
Soubiran et al. 2018 2.96 – – – – – – –
Cantat-Gaudin et al. 2018 2.96 – – – – – – –
Loktin & Popova 2017 1.40 2.52 – 759 – – – –
Kharchenko et al. 2016 1.77 2.45 – 902 – – – –
Kharchenko et al. 2013 1.77 2.45 – 902 – – – –
van den Bergh 2006 1.12 2.63 – 741 – – – –
Dias et al. 2002 1.78 2.60 – 955 0.030 – – –

(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 0080 3.9 292.65 20.26 0.42 -2.9 -6.48 57.07 0.03

πŸ’‘ Note: The % column shows the percentage of members that Collinder 400 shares with each listed object.

Visualization
ℹ️
Collinder 400 UCC
Collinder 400 HUNT23
Collinder 400 CANTAT20
Galactocentric position diagram