Harvard 13

(MWSC 2523; OCL 986; ESO 227 03; FoF 2066)

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0.97 UTI
0.85
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 358
Radius (P>50% members) 11.2 [arcmin]
  • CN 0.85 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Harvard 13 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.
Relatively close Moderate extinction Massive Near-solar metallicity Old

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Harvard 13 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 256.004 -48.12 0.83 -2.875 -7.198 -3.771
Li et al. 2025 255.999 -48.09 0.807 -2.766 -7.19 –
Hu & Soubiran 2025 255.97 -48.112 – – – –
Wei et al. 2025 256.008 -48.116 0.838 -2.902 -7.217 –
Almeida et al. 2025 255.998 -48.085 – – – –
Hunt & Reffert 2024 256.011 -48.118 0.835 -2.895 -7.202 -5.548
Cavallo et al. 2024 255.97 -48.112 0.834 – – –
Hunt & Reffert 2023 256.011 -48.118 0.835 -2.895 -7.202 -5.548
Just et al. 2023 255.952 -48.083 – – – –
He et al. 2022 255.998 -48.121 0.832 -2.888 -7.198 –
Tarricq et al. 2022 255.999 -48.135 0.849 -2.881 -7.189 –
Dias et al. 2021 255.998 -48.085 0.806 -2.751 -7.207 -3.499
Cantat-Gaudin et al. 2020 255.999 -48.09 0.807 -2.766 -7.19 –
Cantat-Gaudin & Anders 2020 255.999 -48.09 0.807 -2.766 -7.19 –
Liu & Pang 2019 256.016 -48.115 0.816 -2.838 -7.165 –
Soubiran et al. 2018 255.999 -48.09 – – – -4.22
Bica et al. 2019 255.95 -48.122 – – – –
Cantat-Gaudin et al. 2018 255.999 -48.09 0.807 -2.766 -7.19 –
Kharchenko et al. 2016 255.952 -48.083 – – – –
Dias et al. 2014 255.962 -48.083 – -4.74 -1.72 –
Kharchenko et al. 2013 255.963 -48.083 – -9.03 -2.76 –
Dias et al. 2002 255.963 -48.083 – -4.88 -1.58 –

💡 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 1.02 1.62 – 1470 -0.138 – – –
Hu & Soubiran 2025 – – – – -0.190* – – –
Wei et al. 2025 1.28 1.48 – 2570 -0.250 896 0.65 –
Almeida et al. 2025 1.09 1.63 – 1119 – 154 – –
Hunt & Reffert 2024 – – – – – 1665* – –
Cavallo et al. 2024 1.08 2.08 – 933 -0.190 – – –
Hunt & Reffert 2023 1.14 1.78 1.32 885 – – – –
Just et al. 2023 – – – 1928 – 3945 – –
He et al. 2022 – 1.75 – 1000 – – – –
Tarricq et al. 2022 1.27 – – 912 – – – –
Dias et al. 2021 1.09 1.63 – 1119 0.143 – – –
Cantat-Gaudin et al. 2020 1.31 1.43 – 851 – – – –
Cantat-Gaudin & Anders 2020 1.20 – – – – – – –
Liu & Pang 2019 – – – 2290 -0.500 – – –
Soubiran et al. 2018 1.20 – – – – – – –
Cantat-Gaudin et al. 2018 1.20 – – – – – – –
Kharchenko et al. 2016 3.61 2.03 – 1928 – – – –
Kharchenko et al. 2013 3.61 2.03 – 1928 – – – –
Dias et al. 2002 3.61 2.03 – 1928 – – – –

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

Visualization
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Harvard 13 UCC
Harvard 13 HUNT23
Harvard 13 CANTAT20
Galactocentric position diagram