Ruprecht 55
(MWSC 1451; OCL 713; ESO 430 25)
Summary
Ruprecht 55 is a moderately populated, very loose object of low C3 quality. It is located at a large distance from the Sun, above the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 123.112 | -32.583 | – | – | – | – |
| Dias et al. (2002) | 123.112 | -32.583 | – | -2.37 | 0.83 | 94.2 |
| Kharchenko et al. (2003) | 123.09 | -32.59 | – | -2.7 | 4.15 | – |
| Kharchenko et al. (2005) | 123.12 | -32.58 | – | -5.06 | 1.32 | 95.33 |
| Piskunov et al. (2007) | 123.118 | -32.579 | – | – | – | – |
| Kharchenko et al. (2007) | 123.12 | -32.58 | – | 0.2 | – | 95.33 |
| Piskunov et al. (2008) | 123.118 | -32.579 | – | – | – | – |
| Kharchenko et al. (2013) | 123.142 | -32.605 | – | -2.43 | 2.52 | 95.3 |
| Kharchenko et al. (2016) | 123.137 | -32.602 | – | – | – | – |
| Loktin & Popova (2017) | 123.12 | -32.582 | – | -5.777 | 3.16 | 95.3 |
| Bica et al. (2019) | 123.078 | -32.565 | – | – | – | – |
| Dias et al. (2021) | 123.113 | -32.581 | 0.187 | -2.316 | 2.921 | 64.253 |
| Jaehnig et al. (2021) | 123.072 | -32.576 | 0.144 | -2.429 | 3.165 | – |
| Just et al. (2023) | 123.137 | -32.602 | – | – | – | – |
| He et al. (2023) | 123.049 | -32.499 | 0.145 | -2.42 | 3.223 | 102.2 |
| Almeida et al. (2025) | 123.113 | -32.581 | – | – | – | – |
| UCC | 123.113 | -32.573 | 0.165 | -2.345 | 2.913 | 53.509 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.553, DM0=14.16, log_age_=6.9 |
| Dias et al. (2002) | E(B-V)=0.45, Dist=4600.0, Age=7.0 |
| Kharchenko et al. (2003) | E(B-V)=0.47, Dist=4761 |
| Kharchenko et al. (2005) | E(B-V)=0.56, Dist=4892, logt=6.97 |
| Piskunov et al. (2007) | E(B-V)=0.56, Dist=4892, logt=6.97, logM=3.281 |
| Piskunov et al. (2008) | E(B-V)=0.56, Dist=4892, logt=6.97, logM=4.138, logMA=4.568 |
| Kharchenko et al. (2013) | E(B-V)=0.604, d=3640.0, logt=6.97 |
| Kharchenko et al. (2016) | E(B-V)=0.604, d=3640.0, logt=6.97 |
| Loktin & Popova (2017) | E(B-V)=0.551, Dist=4851, logt=6.883 |
| Dias et al. (2021) | Av=1.639, Dist=4238, logage=7.328, [Fe/H]=-0.226 |
| Jaehnig et al. (2021) | dmode=6.821 |
| Just et al. (2023) | logt=6.97, logmt=2.901 |
| He et al. (2023) | A0=1.55, m-M=13.5, logA=7.4 |
| Almeida et al. (2025) | AV=1.639, Dist=4238, logAge=7.328, MassRk=1067.3 |
Search coordinates in Bayestar19