Trumpler 25

(Collinder 329; VDBH 225; MWSC 2587; Harvard 14; OCL 1007; vdBergh-Hagen 225; ESO 333 07)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 1036
Radius (P>50% members) 4.4 [arcmin]
  • 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 πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Trumpler 25 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below 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 age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

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

Relatively close Moderate extinction Massive Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Trumpler 25 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 261.123 -39.01 0.414 0.316 -2.14 -25.94
Li et al. 2025 261.125 -39.006 0.402 0.358 -2.12 –
Almeida et al. 2025 261.131 -39.012 – – – –
Hunt & Reffert 2024 261.115 -39.011 0.416 0.318 -2.134 -16.325
Cavallo et al. 2024 261.125 -39.008 0.415 – – –
Hunt & Reffert 2023 261.115 -39.011 0.416 0.318 -2.134 -16.325
Just et al. 2023 261.088 -39.017 – – – –
Dias et al. 2021 261.131 -39.012 0.402 0.357 -2.115 -25.945
Cantat-Gaudin et al. 2020 261.125 -39.006 0.402 0.358 -2.12 –
SΓ‘nchez et al. 2020 261.121 -39.017 – 0.489 -2.558 –
Cantat-Gaudin & Anders 2020 261.125 -39.006 0.402 0.358 -2.12 –
Soubiran et al. 2018 261.125 -39.006 – – – -26.79
Bica et al. 2019 261.105 -39.028 – – – –
Cantat-Gaudin et al. 2018 261.125 -39.006 0.402 0.358 -2.12 –
Kharchenko et al. 2016 261.088 -39.017 – – – –
Dias et al. 2014 261.121 -39.017 – 0.27 -0.35 –
Kharchenko et al. 2013 261.097 -39.017 – -1.99 -2.13 –
Dias et al. 2002 261.121 -39.017 – 0.27 -0.35 –

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
Li et al. 2025 1.55 2.80 – 750 0.047 – – –
Almeida et al. 2025 1.83 2.88 – 226 – 4141 – –
Hunt & Reffert 2024 – – – – – 11408* – –
Cavallo et al. 2024 2.03 3.82 – 58 -0.410 – – –
Hunt & Reffert 2023 2.21 3.36 2.48 78 – – – –
Just et al. 2023 – – – 224 – 469 – –
Dias et al. 2021 1.83 2.88 – 226 0.194 – – –
Cantat-Gaudin et al. 2020 2.13 2.47 – 229 – – – –
Cantat-Gaudin & Anders 2020 2.32 – – – – – – –
Soubiran et al. 2018 2.32 – – – – – – –
Cantat-Gaudin et al. 2018 2.32 – – – – – – –
Kharchenko et al. 2016 1.82 2.90 – 224 – – – –
Kharchenko et al. 2013 1.82 2.90 – 224 – – – –
Dias et al. 2002 1.82 2.90 – 224 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0683 8.8 261.11 -39.01 0.46 0.27 -2.06 19.24 0.0

πŸ’‘ Note: The % column shows the percentage of members that Trumpler 25 shares with each listed object.

Visualization
ℹ️
Trumpler 25 UCC
Trumpler 25 HUNT23
Trumpler 25 CANTAT20
Galactocentric position diagram