ASCC 77

(Ferrero 15; MWSC 2205; FoF 2223; LP 2223; FoF 2310)

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0.96 UTI
0.78
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 177
Radius (P>50% members) 7.3 [arcmin]
  • CN 0.78 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
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ASCC 77 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.
Relatively close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for ASCC 77 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 – 212.699 -62.343 0.875 -4.266 -3.195 -17.011
Li et al. 2025 212.694 -62.331 0.842 -4.243 -3.22 –
Wei et al. 2025 212.719 -62.359 0.875 -4.257 -3.19 –
Almeida et al. 2025 212.723 -62.322 – – – –
Hunt & Reffert 2024 212.696 -62.36 0.875 -4.257 -3.162 -16.422
Cavallo et al. 2024 212.754 -62.315 0.879 – – –
Hunt & Reffert 2023 212.696 -62.36 0.875 -4.257 -3.162 -16.422
Almeida et al. 2023 212.727 -62.333 – – – –
He et al. 2022 212.699 -62.341 0.878 -4.278 -3.186 –
Tarricq et al. 2022 212.641 -62.363 0.874 -4.26 -3.209 –
Dias et al. 2021 212.723 -62.322 0.844 -4.246 -3.213 –
Cantat-Gaudin et al. 2020 212.694 -62.331 0.842 -4.243 -3.22 –
Cantat-Gaudin & Anders 2020 212.694 -62.331 0.842 -4.243 -3.22 –
Liu & Pang 2019 212.745 -62.3 0.835 -4.202 -3.176 –
Bica et al. 2019 212.695 -62.327 – – – –
Cantat-Gaudin et al. 2018 212.694 -62.331 0.842 -4.243 -3.22 –
Dias et al. 2014 212.7 -62.33 – -6.37 -4.66 –
Piskunov et al. 2008 212.695 -62.327 – – – –
Piskunov et al. 2007 212.695 -62.327 – – – –
Kharchenko et al. 2005 212.7 -62.33 – -4.59 -1.49 –
Dias et al. 2002 212.7 -62.33 – -6.37 -4.66 –

💡 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 1.13 0.57 – 213 0.245 – – –
Wei et al. 2025 1.15 0.69 – 148 0.250 417 0.52 –
Almeida et al. 2025 1.07 0.81 – 121 – 345 – –
Hunt & Reffert 2024 – – – – – 614* – –
Cavallo et al. 2024 1.04 0.79 – 138 0.190 – – –
Hunt & Reffert 2023 1.08 0.70 0.94 69 – – – –
Almeida et al. 2023 1.08 0.82 – 145 0.124 480* 0.67 –
He et al. 2022 – 1.05 – 40 – – – –
Tarricq et al. 2022 1.10 – – 98 – – – –
Dias et al. 2021 1.07 0.81 – 121 0.211 – – –
Cantat-Gaudin et al. 2020 1.14 0.64 – 81 – – – –
Cantat-Gaudin & Anders 2020 1.15 – – – – – – –
Liu & Pang 2019 – – – 37 0.250 – – –
Cantat-Gaudin et al. 2018 1.15 – – – – – – –
Piskunov et al. 2008 2.20 0.93 – 10 – 14191* – –
Piskunov et al. 2007 2.20 0.93 – 10 – 3192 – –
Kharchenko et al. 2005 2.20 0.93 – 10 – – – –
Dias et al. 2002 2.20 0.93 – 10 – – – –

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

Visualization
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ASCC 77 UCC
ASCC 77 HUNT23
ASCC 77 CANTAT20
Galactocentric position diagram