UBC 299

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0.75 UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.5
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 115
Radius (P>50% members) 3.0 [arcmin]
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.5 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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UBC 299 is a 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 (see Parameters). It is moderately studied in the literature.

Note: This object shares a large 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: good fit. Gold sample.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 299 in: SciX Simbad
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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 219.668 -62.155 0.318 -3.457 -1.742 -46.962
Li et al. 2025 219.644 -62.153 0.317 -3.445 -1.717 –
Almeida et al. 2025 219.672 -62.16 – – – –
Hunt & Reffert 2024 219.68 -62.153 0.316 -3.489 -1.77 -43.667
Cavallo et al. 2024 219.686 -62.156 0.317 – – –
Hunt & Reffert 2023 219.68 -62.153 0.316 -3.489 -1.77 -43.667
Dias et al. 2021 219.672 -62.16 0.298 -3.439 -1.726 –
Cantat-Gaudin et al. 2020 219.644 -62.153 0.317 -3.445 -1.717 –
Castro-Ginard et al. 2020 219.629 -62.159 0.31 -3.446 -1.728 –

💡 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 2.41 1.96 – 665 0.145 – – –
Almeida et al. 2025 2.68 2.19 – 546 – 785 – –
Hunt & Reffert 2024 – – – – – 1224* – –
Cavallo et al. 2024 2.34 2.68 – 407 -0.150 – – –
Hunt & Reffert 2023 2.87 2.55 1.68 206 – – – –
Dias et al. 2021 2.68 2.19 – 546 0.121 – – –
Cantat-Gaudin et al. 2020 2.74 1.96 – 295 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 909 85.2 219.67 -62.15 0.32 -3.47 -1.75 -46.95 0.03

💡 Note: The % column shows the percentage of members that UBC 299 shares with each listed object.

Visualization
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UBC 299 UCC
UBC 299 HUNT23
UBC 299 CANTAT20
Galactocentric position diagram