UPK 492
0.19
UTI
0.0
CN
0.58
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
13.2 [arcmin]
- CN 0.0 Sparse
- Cdens 0.58 Moderately dense
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
UPK 492 is a sparse, moderately dense object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a metal-rich, intermediate-age cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is rarely studied in the literature.
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.
Close
Low extinction
Metal-rich
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 121.461 | -33.552 | 1.423 | -7.364 | 5.446 | 26.865 |
| Cavallo et al. | 2024 | 121.415 | -33.662 | 1.401 | â | â | â |
| Hunt & Reffert | 2023 | 121.435 | -33.558 | 1.393 | -7.356 | 5.406 | 34.797 |
| Sim et al. | 2019 | 121.451 | -33.531 | â | -7.43 | 5.39 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.81 | 0.00 | â | 138 | 0.860 | â | â | â |
| Hunt & Reffert | 2023 | 0.68 | 0.19 | 0.35 | 472 | â | â | â | â |
| Sim et al. | 2019 | 0.71 | â | â | 79 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.