ESO 489 01
0.20
UTI
0.25
CN
0.24
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
49.9 [arcmin]
- CN 0.25 Poorly populated
- Cdens 0.24 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
ESO 489 01 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very close* distance, below the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature.
(*): The parallax distance estimate (~0.31 kpc) differs significantly from the median photometric distance (~2.16 kpc).
Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Relatively close
Low extinction
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 90.79 | -27.207 | 3.186 | -6.544 | 0.015 | 3.263 |
| He et al. | 2022 | 90.407 | -27.819 | 3.245 | -6.577 | -0.154 | â |
| Loktin & Popova | 2017 | 91.245 | -26.732 | â | -0.002 | 0.08 | â |
| Dias et al. | 2014 | 91.242 | -26.733 | â | -0.63 | 0.33 | â |
đĄ 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. | 2022 | â | 0.15 | â | 100 | â | â | â | â |
| Loktin & Popova | 2017 | 2.16 | 0.35 | â | 1000 | â | â | â | â |
Dias et al. (2002)
No cluster (Carraro, G. 2016, MNRAS 455, 4031)