COIN-Gaia 20
(COIN 20)
- CN 0.55 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.69 Moderately studied
- Cdup 1.0 Unique
Overview
COIN-Gaia 20 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is moderately studied in the literature. Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 78.638 | 31.722 | 0.923 | 0.495 | -1.496 | -1.433 |
| Almeida et al. | 2025 | 78.625 | 31.705 | – | – | – | – |
| Zhang et al. | 2024 | 78.636 | 31.72 | – | – | – | – |
| Hunt & Reffert | 2024 | 78.636 | 31.72 | 0.921 | 0.539 | -1.499 | -0.447 |
| Cavallo et al. | 2024 | 78.745 | 31.572 | 0.922 | – | – | – |
| Hunt & Reffert | 2023 | 78.636 | 31.72 | 0.921 | 0.539 | -1.499 | -0.447 |
| He et al. | 2022 | 78.627 | 31.709 | 0.936 | 0.507 | -1.517 | – |
| Tarricq et al. | 2022 | 78.664 | 31.67 | 0.919 | 0.495 | -1.519 | – |
| Dias et al. | 2021 | 78.625 | 31.705 | 0.916 | 0.547 | -1.465 | – |
| Cantat-Gaudin et al. | 2020 | 78.634 | 31.691 | 0.911 | 0.548 | -1.455 | – |
| Monteiro & Dias | 2019 | 78.634 | 31.691 | – | – | – | 2.408 |
| Cantat-Gaudin et al. | 2019 | 78.634 | 31.691 | 0.91 | 0.55 | -1.45 | – |
💡 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 | 1.00 | 1.00 | – | 70 | – | 69 | – | – |
| Zhang et al. | 2024 | – | – | – | – | -0.166* | – | – | – |
| Hunt & Reffert | 2024 | – | – | – | – | – | 188* | – | – |
| Cavallo et al. | 2024 | 1.05 | 0.89 | – | 44 | 0.040 | – | – | – |
| Hunt & Reffert | 2023 | 1.01 | 0.71 | 0.61 | 74 | – | – | – | – |
| He et al. | 2022 | – | 1.05 | – | 32 | – | – | – | – |
| Tarricq et al. | 2022 | 1.02 | – | – | 85 | – | – | – | – |
| Dias et al. | 2021 | 1.00 | 1.00 | – | 70 | -0.021 | – | – | – |
| Cantat-Gaudin et al. | 2020 | 1.04 | 0.63 | – | 85 | – | – | – | – |
| Monteiro & Dias | 2019 | 1.17 | 0.97 | – | 68 | 0.040 | – | – | – |
| Cantat-Gaudin et al. | 2019 | 1.06 | – | – | – | – | – | – | – |
💡 Note: The parameters are sometimes
transformed from their original values to match the format of the
columns shown here, see FAQ.
The columns DAv, Bfr, BSS correspond to differential
extinction, binary fraction, and blue stragglers, respectively.
BSS values can be listed as fractions or integers.
(*): indicates that this parameter is
assigned more than one value in the corresponding reference.
