L 1641S

(OCSN 213)

Click to load Aladin Lite
0.85 UTI
0.84
CN
1.0
Cdens
1.0
CC3
0.7
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 344
Radius (P>50% members) 19.9 [arcmin]
  • CN 0.84 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.7 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
L 1641S is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is moderately studied in the literature.

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

Very close Moderate extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Wood sample.

Data
🔍 Search references for L 1641S in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 85.648 -8.128 2.34 0.097 -0.36 15.819
Li et al. 2025 85.675 -8.133 2.288 0.013 -0.39 –
Wei et al. 2025 85.66 -8.118 2.369 0.176 -0.278 –
Hunt & Reffert 2024 85.641 -8.138 2.354 0.074 -0.328 13.708
Celli et al. 2024 85.675 -8.133 – – – –
Cavallo et al. 2024 85.679 -8.114 2.354 – – –
Hunt & Reffert 2023 85.641 -8.138 2.354 0.074 -0.328 13.708
Qin et al. 2023 85.64 -8.13 2.35 0.1 -0.33 15.67
He et al. 2022 85.281 -8.294 2.347 0.259 -0.763 –
Cantat-Gaudin et al. 2020 85.675 -8.133 2.288 0.013 -0.39 –
Donor et al. 2020 85.62 -8.15 – 0.36 -0.5 22.0
Cantat-Gaudin & Anders 2020 85.675 -8.133 2.288 0.013 -0.39 –
Cantat-Gaudin et al. 2018 85.675 -8.133 2.288 0.013 -0.39 –

💡 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 0.48 1.62 – 5 -0.051 – – –
Wei et al. 2025 0.35 0.75 – 19 0.500 318 0.45 –
Hunt & Reffert 2024 – – – – – 51* – –
Celli et al. 2024 – – – 4 – 118 – –
Cavallo et al. 2024 0.55 2.56 – 23 0.150 – – –
Hunt & Reffert 2023 0.41 2.60 2.51 12 – – – –
Qin et al. 2023 0.78 1.49 – 5 – – – –
He et al. 2022 – 0.40 – 3 – – – –
Donor et al. 2020 – – – – -0.050 – – –
Cantat-Gaudin & Anders 2020 0.43 – – – – – – –
Cantat-Gaudin et al. 2018 0.43 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OCSN 70 0.9 85.34 -9.45 2.27 0.53 -1.21 16.14 0.32

💡 Note: The % column shows the percentage of members that L 1641S shares with each listed object.

Visualization
ℹī¸
L 1641S UCC
L 1641S HUNT23
L 1641S CANTAT20
Galactocentric position diagram