ASCC 73

(MWSC 2053)

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0.74 UTI
0.38
CN
0.58
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 38
Radius (P>50% members) 19.6 [arcmin]
  • CN 0.38 Poorly populated
  • Cdens 0.58 Moderately dense
  • CC3 0.75 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¸
ASCC 73 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.
Close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data
🔍 Search references for ASCC 73 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 189.303 -67.203 1.569 -11.509 -2.963 -16.697
Li et al. 2025 189.281 -67.203 1.518 -11.539 -2.945 –
Almeida et al. 2025 189.517 -67.217 – – – –
Alfonso et al. 2024 189.129 -67.185 1.528 -11.522 -2.862 –
Cavallo et al. 2024 189.26 -67.192 1.554 – – –
Hunt & Reffert 2023 189.292 -67.21 1.551 -11.482 -2.876 -20.245
Just et al. 2023 189.078 -67.247 – – – –
Dias et al. 2021 189.517 -67.217 1.503 -11.506 -2.967 -12.681
Cantat-Gaudin et al. 2020 189.281 -67.203 1.518 -11.539 -2.945 –
Cantat-Gaudin & Anders 2020 189.281 -67.203 1.518 -11.539 -2.945 –
Soubiran et al. 2018 189.281 -67.203 – – – -6.34
Bica et al. 2019 189.159 -67.291 – – – –
Cantat-Gaudin et al. 2018 189.281 -67.203 1.518 -11.539 -2.945 –
Kharchenko et al. 2016 189.078 -67.247 – – – –
Kharchenko et al. 2013 189.09 -67.25 – -10.63 -1.2 -15.8
Gozha et al. 2012 189.15 -67.29 – – – –
Piskunov et al. 2008 189.134 -67.29 – – – –
Kharchenko et al. 2007 189.15 -67.29 – 0.4 – -15.8
Piskunov et al. 2007 189.134 -67.29 – – – –
Kharchenko et al. 2005 189.15 -67.29 – -11.72 -0.88 –
Dias et al. 2002 189.15 -67.29 – -11.72 -0.88 -15.8

💡 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 0.70 0.61 – 729 -0.151 – – –
Almeida et al. 2025 0.64 0.69 – 488 – 141 – –
Alfonso et al. 2024 0.64 0.23 – 328 -0.151 – – –
Cavallo et al. 2024 0.64 0.66 – 186 0.380 – – –
Hunt & Reffert 2023 0.60 0.21 0.78 158 – – – –
Just et al. 2023 – – – 155 – 32 – –
Tarricq et al. 2022 0.64 – – 355 – – – –
Dias et al. 2021 0.64 0.69 – 488 -0.153 – – –
Cantat-Gaudin et al. 2020 0.65 0.23 – 339 – – – –
Cantat-Gaudin & Anders 2020 0.65 – – – – – – –
Soubiran et al. 2018 0.65 – – – – – – –
Cantat-Gaudin et al. 2018 0.65 – – – – – – –
Kharchenko et al. 2016 0.65 0.16 – 155 – – – –
Kharchenko et al. 2013 0.65 0.16 – 155 – – – –
Gozha et al. 2012 0.65 – – 155 – 437 – –
Piskunov et al. 2008 0.65 0.16 – 155 – 385* – –
Piskunov et al. 2007 0.65 0.16 – 155 – 128 – –
Kharchenko et al. 2005 0.65 0.16 – 155 – – – –
Dias et al. 2002 0.65 0.16 – 155 – – – –

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

Visualization
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ASCC 73 UCC
ASCC 73 HUNT23
ASCC 73 CANTAT20
Galactocentric position diagram