ASCC 90
(MWSC 2655; Alessi 41)
- CN 0.54 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
Overview
ASCC 90 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is very well-studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 264.778 | -34.832 | 1.731 | -1.616 | -2.724 | 7.403 |
| Almeida et al. | 2025 | 264.743 | -34.855 | – | – | – | – |
| Alfonso et al. | 2024 | 264.838 | -34.888 | 1.691 | -1.579 | -2.731 | – |
| Hunt & Reffert | 2024 | 264.762 | -34.817 | 1.706 | -1.529 | -2.655 | 6.278 |
| Cavallo et al. | 2024 | 264.63 | -34.83 | 1.713 | – | – | – |
| Hunt & Reffert | 2023 | 264.762 | -34.817 | 1.706 | -1.529 | -2.655 | 6.278 |
| Tarricq et al. | 2022 | 264.779 | -34.892 | 1.729 | -1.591 | -2.741 | – |
| Dias et al. | 2021 | 264.743 | -34.855 | 1.718 | -1.618 | -2.706 | 7.722 |
| Cantat-Gaudin et al. | 2020 | 264.777 | -34.874 | 1.713 | -1.63 | -2.681 | – |
| Soubiran et al. | 2018 | 264.777 | -34.874 | – | – | – | 7.27 |
| Bica et al. | 2019 | 264.775 | -34.795 | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 264.777 | -34.874 | 1.713 | -1.63 | -2.681 | – |
| Kharchenko et al. | 2016 | 264.771 | -34.815 | – | – | – | – |
| Kharchenko et al. | 2013 | 264.78 | -34.815 | – | -3.0 | -3.65 | – |
| Piskunov et al. | 2008 | 264.768 | -34.803 | – | – | – | – |
| Kharchenko et al. | 2005 | 264.78 | -34.8 | – | -2.49 | -3.64 | – |
| Dias et al. | 2002 | 264.779 | -34.8 | – | -2.49 | -3.64 | – |
💡 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 | 0.55 | 0.85 | – | 628 | – | 197 | – | – |
| Alfonso et al. | 2024 | 0.56 | 0.32 | – | 1087 | 0.083 | – | – | – |
| Hunt & Reffert | 2024 | – | – | – | – | – | 272* | – | – |
| Cavallo et al. | 2024 | 0.56 | 1.19 | – | 363 | 0.100 | – | – | – |
| Hunt & Reffert | 2023 | 0.55 | 0.68 | 1.05 | 409 | – | – | – | – |
| Tarricq et al. | 2022 | 0.55 | – | – | 851 | – | – | – | – |
| Dias et al. | 2021 | 0.55 | 0.85 | – | 628 | 0.083 | – | – | – |
| Cantat-Gaudin et al. | 2020 | 0.56 | 0.32 | – | 813 | – | – | – | – |
| Soubiran et al. | 2018 | 0.57 | – | – | – | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 0.57 | – | – | – | – | – | – | – |
| Kharchenko et al. | 2016 | 0.53 | 0.93 | – | 646 | – | – | – | – |
| Kharchenko et al. | 2013 | 0.53 | 0.93 | – | 646 | – | – | – | – |
| Piskunov et al. | 2008 | 0.50 | 0.93 | – | 646 | – | – | – | – |
| Kharchenko et al. | 2005 | 0.50 | 0.93 | – | 646 | – | – | – | – |
| Dias et al. | 2002 | 0.50 | 0.93 | – | 646 | – | – | – | – |
💡 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.
