Riddle 4
Summary
Riddle 4 is a moderately populated, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 31.846 | 60.257 | – | 9.08 | -6.01 | – |
| Kronberger et al. (2006) | 31.845 | 60.257 | – | – | – | – |
| Kharchenko et al. (2012) | 31.86 | 60.271 | – | 1.01 | -1.1 | – |
| Loktin & Popova (2017) | 31.845 | 60.257 | – | 0.414 | -1.534 | – |
| Cantat-Gaudin et al. (2018) | 31.862 | 60.26 | 0.339 | -0.757 | -0.451 | – |
| Soubiran et al. (2018) | 31.862 | 60.26 | – | – | – | -34.08 |
| Dias et al. (2019) | 31.846 | 60.257 | 0.337 | -0.761 | -0.523 | -30.388 |
| Cantat-Gaudin et al. (2020) | 31.862 | 60.26 | 0.339 | -0.757 | -0.451 | – |
| Dias et al. (2021) | 31.858 | 60.263 | 0.349 | -0.764 | -0.474 | – |
| Hunt & Reffert (2023) | 31.85 | 60.262 | 0.354 | -0.806 | -0.499 | -25.266 |
| Cavallo et al. (2024) | 31.83 | 60.27 | 0.352 | – | – | – |
| Celli et al. (2024) | 31.862 | 60.26 | – | – | – | – |
| Hunt & Reffert (2024) | 31.85 | 60.262 | 0.354 | -0.806 | -0.499 | -25.266 |
| Almeida et al. (2025) | 31.858 | 60.263 | – | – | – | – |
| UCC | 31.862 | 60.259 | 0.345 | -0.791 | -0.491 | -44.579 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=1.1, Dist=2800.0, Age=7.6 |
| Kharchenko et al. (2012) | e_bv=1.049, distance=2200, log_age=7.35 |
| Loktin & Popova (2017) | E(B-V)=0.688, Dist=1801, logt=8.34 |
| Cantat-Gaudin et al. (2018) | dmode=2719.4 |
| Soubiran et al. (2018) | dmode=2719.4 |
| Dias et al. (2019) | E(B-V)=0.74, Dist=2270, logAge=7.328, Z=0.003 |
| Cantat-Gaudin et al. (2020) | AVNN=3.01, DistPc=3073.0, AgeNN=7.43 |
| Dias et al. (2021) | Av=3.036, Dist=2638, logage=7.034, [Fe/H]=-0.109 |
| Hunt & Reffert (2023) | AV50=3.288, diffAV50=0.762, MOD50=12.147, logAge50=7.163 |
| Cavallo et al. (2024) | AV50=3.04, dMod50=12.41, logAge50=7.55, [Fe/H]50=0.69 |
| Celli et al. (2024) | Age=26.9, Mc=392.1 |
| Hunt & Reffert (2024) | MassJ=818.990, MassTot=830.271 |
| Almeida et al. (2025) | AV=3.036, Dist=2638, logAge=7.034, MassRk=327.6 |
Search coordinates in Bayestar19