Basel 4
(FSR 0825; Czernik22; OCL 455; MWSC 672)
Summary
Basel 4 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, above the mid-plane. It is very well-studied in the literature.
This object shares a moderate percentage of members with a later reported entry.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 87.125 | 30.217 | – | -0.59 | -2.65 | – |
| Froebrich et al. (2007) | 87.237 | 30.173 | – | – | – | – |
| Kharchenko et al. (2012) | 87.251 | 30.205 | – | -1.38 | -6.37 | – |
| Cantat-Gaudin et al. (2018) | 87.242 | 30.19 | 0.286 | 0.835 | -1.801 | – |
| Bica et al. (2019) | 87.221 | 30.196 | – | – | – | – |
| Soubiran et al. (2018) | 87.242 | 30.19 | – | – | – | 6.52 |
| Bossini et al. (2019) | 87.242 | 30.19 | – | – | – | – |
| Cantat-Gaudin et al. (2020) | 87.242 | 30.19 | 0.286 | 0.835 | -1.801 | – |
| Dias et al. (2021) | 87.235 | 30.194 | 0.279 | 0.837 | -1.809 | 6.533 |
| Hunt & Reffert (2023) | 87.243 | 30.192 | 0.3 | 0.821 | -1.792 | 4.541 |
| Cavallo et al. (2024) | 87.242 | 30.196 | 0.299 | – | – | – |
| Hunt & Reffert (2024) | 87.243 | 30.192 | 0.3 | 0.821 | -1.792 | 4.541 |
| Almeida et al. (2025) | 87.235 | 30.194 | – | – | – | – |
| UCC | 87.242 | 30.194 | 0.293 | 0.837 | -1.79 | 6.157 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.45, Dist=3000.0, Age=8.3 |
| Kharchenko et al. (2012) | e_bv=0.5, distance=2801, log_age=8.665 |
| Cantat-Gaudin et al. (2018) | dmode=3172.7 |
| Soubiran et al. (2018) | dmode=3172.7 |
| Bossini et al. (2019) | AV=1.525, Dist=12.658, logA=8.135, Fe/H=0.0 |
| Cantat-Gaudin et al. (2020) | AVNN=1.48, DistPc=3322.0, AgeNN=8.05 |
| Dias et al. (2021) | Av=1.78, Dist=2833, logage=8.297, [Fe/H]=-0.175 |
| Hunt & Reffert (2023) | AV50=1.334, diffAV50=0.889, MOD50=12.348, logAge50=8.53 |
| Cavallo et al. (2024) | AV50=1.58, dMod50=11.92, logAge50=8.66, [Fe/H]50=-0.29 |
| Hunt & Reffert (2024) | MassJ=974.559, MassTot=1051.46 |
| Almeida et al. (2025) | AV=1.78, Dist=2833, logAge=8.297, MassRk=319.6 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0295 | 48.0 | 87.24 | 30.19 | 0.3 | 0.84 | -1.8 | 6.16 | 0.0 |