Alessi 57
(DSH J1920.8+1540; FSR 0130; MWSC 3089)
- CN 0.3 Poorly populated
- Cdens 0.88 Dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Alessi 57 is a poorly populated, dense object of high C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by very high extinction. It is catalogued as a cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 7 years. (*): The parallax distance estimate (~6.89 kpc) differs significantly from the median photometric distance (~3.90 kpc).
Note: This object shares a significant 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 | – | 290.223 | 15.679 | 0.145 | -2.139 | -5.243 | 15.436 |
| Bica et al. | 2019 | 290.222 | 15.682 | – | – | – | – |
| Kronberger et al. | 2006 | 290.224 | 15.677 | – | – | – | – |
| Dias et al. | 2002 | 290.225 | 15.677 | – | 0.57 | -5.89 | – |
💡 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 |
|---|---|---|---|---|---|---|---|---|---|
| Kronberger et al. | 2006 | 3.90* | 6.54* | – | – | – | – | – | – |
| Dias et al. | 2002 | 3.90 | 6.54 | – | – | – | – | – | – |
💡 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.
