Berkeley 26
(MWSC 994; Biurakan 12; OCL 520)
0.44
UTI
0.45
CN
0.4
Cdens
0.38
CC3
0.5
Clit
1.0
Cdup
Radius (P>50% members)
2.8 [arcmin]
- CN 0.45 Poorly populated
- Cdens 0.4 Loose
- CC3 0.38 Low quality
- Clit 0.5 Moderately studied
- Cdup 1.0 Unique
Overview
Berkeley 26 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.
(*): The parallax distance estimate (~5.84 kpc) differs significantly from the median photometric distance (~4.08 kpc).
Distant
Moderate extinction
Massive
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 102.573 | 5.73 | 0.171 | 0.064 | 0.406 | 70.255 |
| He et al. | 2023 | 102.573 | 5.727 | 0.179 | 0.063 | 0.422 | 66.57 |
| Just et al. | 2023 | 102.54 | 5.757 | – | – | – | – |
| Perren et al. | 2022 | 102.547 | 5.755 | – | – | – | – |
| Bica et al. | 2019 | 102.564 | 5.736 | – | – | – | – |
| Loktin & Popova | 2017 | 102.57 | 5.751 | – | -0.978 | -0.908 | 68.0 |
| Kharchenko et al. | 2016 | 102.54 | 5.757 | – | – | – | – |
| Kharchenko et al. | 2013 | 102.547 | 5.755 | – | -4.12 | -2.98 | – |
| Dias et al. | 2002 | 102.575 | 5.75 | – | 2.7 | -1.44 | 68.0 |
💡 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 |
|---|---|---|---|---|---|---|---|---|---|
| He et al. | 2023 | 4.68 | 2.00 | – | 3981 | – | – | – | – |
| Just et al. | 2023 | – | – | – | 513 | – | 136 | – | – |
| Perren et al. | 2022 | 4.57 | 1.71 | – | 8710 | 0.070 | 4600 | 0.78 | – |
| Loktin & Popova | 2017 | 3.58 | 1.32 | – | 891 | – | – | – | – |
| Kharchenko et al. | 2016 | 2.72 | 1.68 | – | 513 | – | – | – | – |
| Kharchenko et al. | 2013 | 2.72 | 1.68 | – | 513 | -0.700 | – | – | – |
| Dias et al. | 2002 | 12.59 | 2.33 | – | 3981 | -0.350 | – | – | – |
💡 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.
