SAI 108

(MWSC 1698)

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0.48 UTI
0.33
CN
0.27
Cdens
0.75
CC3
0.52
Clit
1.0
Cdup
Nm (P>50%) 33
Core radius and density 1.6 [pc], 1.4 [pc-2]
C3 classification AB
  • CN 0.33 Poorly populated
  • Cdens 0.27 Loose
  • CC3 0.75 High quality
  • Clit 0.52 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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SAI 108 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, near 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 metallicity parameters (see Parameters). It is moderately studied in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.3722, e_all=0.0566.

Data
🔍 Search references for SAI 108 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 99999– 144.743 -52.945 0.265 -4.917 3.705 –
Almeida et al. 2025 144.741 -52.951 – – – –
Hunt & Reffert 2024 144.741 -52.936 0.251 -4.927 3.726 19.182
Cavallo et al. 2024 144.748 -52.939 0.255 – – –
Hunt & Reffert 2023 144.741 -52.936 0.251 -4.927 3.726 19.182
Just et al. 2023 144.715 -52.931 – – – –
Dias et al. 2021 144.741 -52.951 0.255 -4.908 3.656 –
Cantat-Gaudin et al. 2020 144.729 -52.947 0.258 -4.931 3.681 –
Cantat-Gaudin & Anders 2020 144.729 -52.947 0.258 -4.931 3.681 –
Soubiran et al. 2018 144.729 -52.947 – – – 20.56
Bica et al. 2019 144.709 -52.959 – – – –
Cantat-Gaudin et al. 2018 144.729 -52.947 0.258 -4.931 3.681 –
Sampedro et al. 2017 144.721 -52.958 – 0.08 -0.46 –
Kharchenko et al. 2016 144.715 -52.931 – – – –
Dias et al. 2014 144.721 -52.958 – -0.18 0.14 –
Kharchenko et al. 2013 144.72 -52.935 – -6.96 7.96 –
Glushkova et al. 2010 144.72 -52.958 – – – –
Dias et al. 2002 144.721 -52.958 – -0.18 0.14 –

💡 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] Bfrac BSS
UCC 99999– 3.36 2.07 1.59 156 -0.252 630 – –
Almeida et al. 2025 3.23 1.93 – 44 – 302 – –
Hunt & Reffert 2024 3.50 2.04 1.59 126 – 630(1) – –
Cavallo et al. 2024 2.47 2.07 – 186 -0.630 – – –
Hunt & Reffert 2023 3.50 2.04 1.59 126 – – – –
Just et al. 2023 – – – 569 – 741 – –
Dias et al. 2021 3.23 1.93 – 44 0.127 – – –
Cantat-Gaudin et al. 2020 3.61 1.55 – 120 – – – –
Kounkel et al. 2020 3.83 2.92 – 115 – – – –
Cantat-Gaudin & Anders 2020 3.49 – – – – – – –
Soubiran et al. 2018 3.49 – – – – – – –
Cantat-Gaudin et al. 2018 3.49 – – – – – – –
Kharchenko et al. 2016 3.01 2.52 – 569 – – – –
Kharchenko et al. 2013 3.01 2.52 – 569 – – – –
Glushkova et al. 2010 2.91 2.08 – 316 – – – –
Dias et al. 2002 2.91 2.08 – 316 – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0517 30.3 144.75 -52.94 0.29 -4.85 3.6 21.28 0.06

💡 Note: The % column shows the percentage of members that SAI 108 shares with each listed object.

Visualization
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SAI 108 UCC
SAI 108 HUNT23
SAI 108 CANTAT20
Galactocentric position diagram