Berkeley 81
(MWSC 3039; OCL 88)
- CN 0.8 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
Overview
Note: This object contains blue stragglers according to at least one source.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 285.418 | -0.454 | 0.248 | -1.153 | -1.929 | 46.795 |
| Hu & Soubiran | 2025 | 285.426 | -0.44 | – | – | – | – |
| Almeida et al. | 2025 | 285.417 | -0.454 | – | – | – | – |
| Hunt & Reffert | 2024 | 285.417 | -0.457 | 0.252 | -1.145 | -1.962 | 44.696 |
| Cavallo et al. | 2024 | 285.426 | -0.44 | 0.247 | – | – | – |
| Hunt & Reffert | 2023 | 285.417 | -0.457 | 0.252 | -1.145 | -1.962 | 44.696 |
| Just et al. | 2023 | 285.398 | -0.462 | – | – | – | – |
| Jaehnig et al. | 2021 | 285.42 | -0.454 | 0.275 | -1.213 | -1.864 | – |
| Rain et al. | 2021 | 285.419 | -0.454 | 0.254 | -1.204 | -1.853 | – |
| Dias et al. | 2021 | 285.417 | -0.454 | 0.255 | -1.191 | -1.85 | 49.891 |
| Cantat-Gaudin et al. | 2020 | 285.419 | -0.454 | 0.254 | -1.204 | -1.853 | – |
| Soubiran et al. | 2018 | 285.419 | -0.454 | – | – | – | 50.01 |
| Bica et al. | 2019 | 285.412 | -0.456 | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 285.419 | -0.454 | 0.254 | -1.204 | -1.853 | – |
| Loktin & Popova | 2017 | 285.42 | -0.456 | – | 2.724 | -8.142 | 13.0 |
| Kharchenko et al. | 2016 | 285.398 | -0.462 | – | – | – | – |
| Kharchenko et al. | 2013 | 285.405 | -0.46 | – | -0.99 | -8.59 | 13.0 |
| Dias et al. | 2002 | 285.417 | -0.456 | – | 1.46 | -0.7 | 48.1 |
💡 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | – | – | – | – | -0.070* | – | – | – |
| Almeida et al. | 2025 | 3.69 | 3.04 | – | 769 | – | 1262 | – | – |
| Hunt & Reffert | 2024 | – | – | – | – | – | 4001* | – | – |
| Cavallo et al. | 2024 | 2.78 | 3.34 | – | 1096 | -0.070 | – | – | – |
| Hunt & Reffert | 2023 | 3.45 | 3.88 | 2.17 | 225 | – | – | – | – |
| Just et al. | 2023 | – | – | – | 1000 | – | 2037 | – | – |
| Jaehnig et al. | 2021 | 3.68* | – | – | – | – | – | – | – |
| Rain et al. | 2021 | 3.53 | 3.10 | – | 1000 | – | – | – | 1 |
| Dias et al. | 2021 | 3.69 | 3.04 | – | 769 | 0.215 | – | – | – |
| Cantat-Gaudin et al. | 2020 | 3.31 | 2.75 | – | 1148 | – | – | – | – |
| Soubiran et al. | 2018 | 3.53 | – | – | – | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 3.53 | – | – | – | – | – | – | – |
| Loktin & Popova | 2017 | 4.73 | 2.78 | – | 589 | – | – | – | – |
| Kharchenko et al. | 2016 | 3.40 | 3.29 | – | 1000 | – | – | – | – |
| Kharchenko et al. | 2013 | 3.40 | 3.29 | – | 1000 | -0.150 | – | – | – |
| Dias et al. | 2002 | 3.00 | 3.10 | – | 1000 | -0.150 | – | – | – |
💡 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.
Almeida et al. (2025): Mass determination: good fit. Isochrone match: intermediate fit. Silver sample.
Cavallo et al. (2024): Gold sample.