Theia 361
0.32
UTI
0.0
CN
1.0
Cdens
0.62
CC3
0.0
Clit
1.0
Cdup
Nm (P>50%)
22
Core radius and density
0.3 [pc], 12 [pc-2]
- CN 0.0 Sparse
- Cdens 1.0 Very dense
- CC3 0.62 Intermediate quality
- Clit 0.0 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
Theia 361 is a sparse, very dense object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with 3 later reported entries. 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 | 107.274 | -7.223 | 1.167 | -0.919 | -1.162 | 6.202 |
| Hunt & Reffert | 2023 | 107.259 | -7.252 | 1.372 | -0.907 | -1.04 | 1.578 |
| Kounkel & Covey | 2019 | 107.294 | -7.217 | 1.14 | â | â | -8.933 |
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 | 0.785 | 0.265 | 0.28 | 2113 | â | â | â | â |
| Hunt & Reffert | 2023 | 0.69 | 0.26 | 0.28 | 4121 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.88 | 0.27 | â | 105 | â | â | â | â |
Palma et al. (2025)
Part of multiple system G241, along with Theia_267 and HSC_1743.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.97 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.97 (50th percentile).