COIN-Gaia 28

(COIN 28; LISC 3133)

Click to load Aladin Lite
0.65 UTI
0.77
CN
1.0
Cdens
0.75
CC3
0.35
Clit
1.0
Cdup
Nm (P>50%) 155
Core radius and density 1.0 [pc], 6.5 [pc-2]
C3 classification AB
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.35 Poorly studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
COIN-Gaia 28 is a rich, very dense object of 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 poorly studied in the literature.

Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2014, e_all=0.1676.

Data
🔍 Search references for COIN-Gaia 28 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 96.329 11.158 0.592 -1.125 -0.962 29.717
Almeida et al. 2025 96.353 11.15 – – – –
Zhang et al. 2024 96.331 11.163 – – – –
Hunt & Reffert 2024 96.331 11.163 0.596 -1.151 -0.977 9.903
Cavallo et al. 2024 96.323 11.164 0.595 – – –
Hunt & Reffert 2023 96.331 11.163 0.596 -1.151 -0.977 9.903
Almeida et al. 2023 96.339 11.145 – – – –
Dias et al. 2021 96.353 11.15 0.61 -1.134 -0.943 –
Cantat-Gaudin et al. 2020 96.333 11.159 0.59 -1.12 -0.942 –
Cantat-Gaudin & Anders 2020 96.333 11.159 0.59 -1.12 -0.942 –
Monteiro & Dias 2019 96.333 11.159 – – – 3.082
Cantat-Gaudin et al. 2019 96.333 11.159 0.59 -1.12 -0.94 –

💡 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– 1.545 0.91 0.83 75 -0.073 324 0.39 –
Almeida et al. 2025 1.53 1.13 – 53 – 324 – –
Zhang et al. 2024 – – – – -0.009(1) – – –
Hunt & Reffert 2024 1.53 0.80 0.83 121 – 321(1) – –
Cavallo et al. 2024 1.55 0.96 – 132 -0.100 – – –
Hunt & Reffert 2023 1.54 0.80 0.83 121 – – – –
Almeida et al. 2023 1.49 1.07 – 90 -0.105 388(1) 0.39 –
Deng & Li 2023 1.61 1.43 – 0 -0.141 – – –
Dias et al. 2021 1.53 1.13 – 53 -0.047 – – –
Cantat-Gaudin et al. 2020 1.60 0.75 – 55 – – – –
Kounkel et al. 2020 1.61 0.85 – 158 – – – –
Cantat-Gaudin & Anders 2020 1.62 – – – – – – –
Monteiro & Dias 2019 1.52 0.86 – 60 0.007 – – –
Cantat-Gaudin et al. 2019 1.62 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 81 97.4 96.33 11.16 0.59 -1.12 -0.96 29.72 0.02
CWWDL 6296 48.4 96.33 11.16 0.59 -1.14 -0.96 29.72 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 28 shares with each listed object.

Visualization
ℹī¸
COIN-Gaia 28 UCC
COIN-Gaia 28 HUNT23
COIN-Gaia 28 CANTAT20
Galactocentric position diagram