SAI 47

(MWSC 526)

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0.83 UTI
0.52
CN
1.0
Cdens
0.62
CC3
1.0
Clit
1.0
Cdup
Radius (P>50% members) 1.9 [arcmin]
  • CN 0.52 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.62 Intermediate quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique

Overview

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SAI 47 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~5.54 kpc) differs significantly from the median photometric distance (~3.96 kpc).

Distant Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 80.995 42.312 0.18 0.016 -0.35 -9.619
Almeida et al. 2025 81.001 42.313 – – – –
Zhang et al. 2024 80.997 42.316 – – – –
Hunt & Reffert 2024 80.997 42.316 0.188 0.06 -0.323 -11.064
Cavallo et al. 2024 80.931 42.322 0.185 – – –
Hunt & Reffert 2023 80.997 42.316 0.188 0.06 -0.323 -11.064
Almeida et al. 2023 81.001 42.316 – – – –
Just et al. 2023 80.975 42.323 – – – –
Dias et al. 2021 81.001 42.313 0.187 0.111 -0.311 –
Cantat-Gaudin et al. 2020 81.0 42.315 0.188 0.092 -0.335 –
SΓ‘nchez et al. 2020 80.992 42.314 – 0.201 -0.1 –
Cantat-Gaudin & Anders 2020 81.0 42.315 0.188 0.092 -0.335 –
Soubiran et al. 2018 81.0 42.315 – – – -9.46
Bica et al. 2019 80.997 42.317 – – – –
Cantat-Gaudin et al. 2018 81.0 42.315 0.188 0.092 -0.335 –
Kharchenko et al. 2016 80.975 42.323 – – – –
Dias et al. 2014 80.992 42.314 – -0.7 3.09 –
Kharchenko et al. 2013 80.985 42.323 – -2.81 -2.58 –
Kharchenko et al. 2012 80.985 42.323 – -2.81 -2.58 –
Glushkova et al. 2010 80.992 42.314 – – – –
Dias et al. 2002 80.992 42.314 – -0.7 2.42 –

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] Bfr BSS
Almeida et al. 2025 3.45 2.02 – 59 – 151 – –
Zhang et al. 2024 – – – – -0.036* – – –
Hunt & Reffert 2024 – – – – – 733* – –
Cavallo et al. 2024 4.21 2.06 – 50 -0.040 – – –
Hunt & Reffert 2023 4.32 1.79 2.21 89 – – – –
Almeida et al. 2023 4.07 2.11 – 40 -0.296 235* 0.62 –
Just et al. 2023 – – – 1585 – 48 – –
Dias et al. 2021 3.45 2.02 – 59 -0.198 – – –
Cantat-Gaudin et al. 2020 4.68 1.40 – 63 – – – –
Cantat-Gaudin & Anders 2020 4.62 – – – – – – –
Soubiran et al. 2018 4.62 – – – – – – –
Cantat-Gaudin et al. 2018 4.62 – – – – – – –
Kharchenko et al. 2016 1.52 0.84 – 1585 – – – –
Kharchenko et al. 2013 1.52 0.84 – 1585 – – – –
Kharchenko et al. 2012 1.52 0.84 – 1585 – – – –
Glushkova et al. 2010 3.86 1.86 – 316 – – – –
Dias et al. 2002 3.86 1.86 – 316 – – – –

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

Visualization

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