VDBH 253

(Czernik 37; MWSC 2737; OCL 8; vdBergh-Hagen 253; ESO 521 03; FoF 284)

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0.88 UTI
0.84
CN
1.0
Cdens
1.0
CC3
0.77
Clit
1.0
Cdup
Nm (P>50%) 343
Core radius and density 1.0 [pc], 31 [pc-2]
C3 classification AA
  • CN 0.84 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.77 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
VDBH 253 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high 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 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)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.82 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.82 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.088, e_all=0.0754.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Data
πŸ” Search references for VDBH 253 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 268.319 -27.374 0.376 0.455 -0.463 -19.193
Almeida et al. 2025 268.322 -27.376 – – – –
Hunt & Reffert 2024 268.318 -27.366 0.371 0.462 -0.465 -2.124
Cavallo et al. 2024 268.321 -27.37 0.37 – – –
Hunt & Reffert 2023 268.318 -27.366 0.371 0.462 -0.465 -2.124
Just et al. 2023 268.311 -27.366 – – – –
Jadhav & Subramaniam 2021 268.32 -27.373 – – – –
Dias et al. 2021 268.322 -27.376 0.399 0.449 -0.426 -19.527
Cantat-Gaudin et al. 2020 268.32 -27.373 0.406 0.459 -0.445 –
SΓ‘nchez et al. 2020 268.321 -27.369 – 0.537 -0.406 –
Cantat-Gaudin & Anders 2020 268.32 -27.373 0.406 0.459 -0.445 –
Liu & Pang 2019 268.321 -27.368 0.425 0.463 -0.439 –
Soubiran et al. 2018 268.32 -27.373 – – – -19.21
Bica et al. 2019 268.317 -27.37 – – – –
Cantat-Gaudin et al. 2018 268.32 -27.373 0.406 0.459 -0.445 –
Dias et al. 2018 – – – 0.48 -1.12 –
Sampedro et al. 2017 268.321 -27.369 – 1.67 -4.14 –
Joshi et al. 2016 268.32 -27.365 – – – –
Kharchenko et al. 2016 268.311 -27.366 – – – –
Tadross 2014 268.321 -27.369 – – – –
Dias et al. 2014 268.321 -27.369 – 0.74 -3.72 –
Kharchenko et al. 2013 268.32 -27.365 – -0.28 -1.24 –
Morales et al. 2013 268.321 -27.369 – – – –
Dias et al. 2002 268.321 -27.369 – 0.74 -3.72 –
Lynga 1987 268.311 -27.379 – – – –
van den Bergh & Hagen 1975 267.525 -27.35 – – – –

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] Bfrac BSS
UCC 99999– 1.98 3.81 2.535 380 0.000 2306 – 1
Almeida et al. 2025 1.87 3.60 – 363 – 1822 – –
Hunt & Reffert 2024 2.45 4.95 2.53 104 – 5868(1) – –
Cavallo et al. 2024 1.98 5.06 – 25 -0.750 – – –
Hunt & Reffert 2023 2.45 4.95 2.54 104 – – – –
Just et al. 2023 – – – 589 – 202 – –
Jadhav & Subramaniam 2021 2.31 3.43 – 380 – 2791 – 1(1)
Dias et al. 2021 1.87 3.60 – 363 0.483 – – –
Cantat-Gaudin et al. 2020 2.31 3.43 – 380 – – – –
Kounkel et al. 2020 2.36 3.75 – 295 – – – –
Cantat-Gaudin & Anders 2020 2.30 – – – – – – –
Liu & Pang 2019 – – – 407 0.000 – – –
Soubiran et al. 2018 2.30 – – – – – – –
Cantat-Gaudin et al. 2018 2.30 – – – – – – –
Joshi et al. 2016 1.67 3.81 – 589 – – – –
Kharchenko et al. 2016 1.67 3.81 – 589 – – – –
Tadross 2014 1.73 3.25 – 600 – – – –
Kharchenko et al. 2013 1.67 3.81 – 589 – – – –
Morales et al. 2013 1.70 – – 600 – – – –
Dias et al. 2002 1.44 4.64 – 251 – – – –

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

Visualization
ℹ️
VDBH 253 UCC
VDBH 253 HUNT23
VDBH 253 CANTAT20
Galactocentric position diagram