UBC 1577
0.26
UTI
0.28
CN
0.22
Cdens
0.75
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
28
Core radius and density
1.5 [pc], 1.1 [pc-2]
- CN 0.28 Poorly populated
- Cdens 0.22 Very loose
- CC3 0.75 High quality
- Clit 0.03 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
UBC 1577 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a large 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 | 99999â | 29.447 | 57.456 | 0.408 | -1.32 | -1.233 | â |
| Zhang et al. | 2024 | 29.42 | 57.445 | â | â | â | â |
| Hunt & Reffert | 2024 | 29.42 | 57.445 | 0.417 | -1.336 | -1.216 | -4.759 |
| Castro-Ginard et al. | 2022 | 29.48 | 57.45 | 0.41 | -1.32 | -1.24 | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 2.615 | 0.835 | 1.0 | 74 | -0.196 | 161 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.196(1) | â | â | â |
| Hunt & Reffert | 2024 | 2.23 | 0.62 | 1.00 | 113 | â | 161(1) | â | â |
| Castro-Ginard et al. | 2022 | 3.00 | 1.05 | â | 35 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as moving group. CMD class: 1.00 (50th percentile).