RSG3
(TRSG 3; Alessi-Teutsch 4; UBC 12; AT 4; Alessi 26; OCSN 282)
0.36
UTI
0.29
CN
0.19
Cdens
0.75
CC3
0.29
Clit
1.0
Cdup
Nm (P>50%)
29
Core radius and density
1.5 [pc], 1.0 [pc-2]
- CN 0.29 Poorly populated
- Cdens 0.19 Very loose
- CC3 0.75 High quality
- Clit 0.29 Poorly 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
RSG3 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 126.029 | -8.405 | 2.223 | -8.364 | 4.139 | 31.222 |
| Alfonso et al. | 2024 | 125.922 | -8.434 | 2.207 | -8.17 | 4.073 | â |
| Cavallo et al. | 2024 | 126.208 | -8.549 | 2.231 | â | â | â |
| Hunt & Reffert | 2023 | 126.033 | -8.375 | 2.234 | -8.321 | 4.252 | 31.374 |
| Qin et al. | 2023 | 126.0 | -8.39 | 2.23 | -8.32 | 4.39 | 30.91 |
| He et al. | 2022 | 125.984 | -8.416 | 2.249 | -8.332 | 4.161 | â |
| Tarricq et al. | 2022 | 126.004 | -8.403 | 2.251 | -8.394 | 4.237 | â |
| Cantat-Gaudin et al. | 2020 | 126.027 | -8.405 | 2.219 | -8.301 | 4.131 | â |
| Cantat-Gaudin & Anders | 2020 | 126.027 | -8.405 | 2.219 | -8.301 | 4.131 | â |
| Bica et al. | 2019 | 126.122 | -8.566 | â | â | â | â |
| Castro-Ginard et al. | 2018 | 126.133 | -8.567 | 2.215 | -8.28 | 4.08 | 31.34 |
| Roser et al. | 2016 | 126.12 | -8.81 | â | -7.98 | 4.33 | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 0.45 | 0.45 | 0.62 | 300 | 0.020 | â | â | â |
| Alfonso et al. | 2024 | 0.46 | 0.23 | â | 650 | 0.010 | â | â | â |
| Cavallo et al. | 2024 | 0.44 | 0.72 | â | 107 | 0.030 | â | â | â |
| Hunt & Reffert | 2023 | 0.42 | 0.45 | 0.62 | 133 | â | â | â | â |
| Qin et al. | 2023 | 0.57 | 0.54 | â | 562 | â | â | â | â |
| He et al. | 2022 | â | 0.60 | â | 355 | â | â | â | â |
| Tarricq et al. | 2022 | 0.46 | â | â | 245 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 0.46 | 0.23 | â | 234 | â | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 0.44 | â | â | â | â | â | â | â |
| Roser et al. | 2016 | 0.44 | 0.02 | â | 1000 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hu et al. (2021)
Ellipticities (core, all): e_core=0.4905, e_all=0.4233.
Bica et al. (2019)
List of clusters and alike reported by B. Alessi.