Roslund 2

(MWSC 3173; FoF 1275)

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0.91 UTI
0.78
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 183
Radius (P>50% members) 6.4 [arcmin]
  • CN 0.78 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Roslund 2 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.
Relatively close Moderate extinction Near-solar metallicity Very young

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Roslund 2 in: SciX Simbad
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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 296.277 23.976 0.47 -1.732 -5.135 15.447
Almeida et al. 2025 296.269 23.965 – – – –
Hunt & Reffert 2024 296.274 23.974 0.476 -1.754 -5.148 28.832
Celli et al. 2024 296.261 23.977 – – – –
Cavallo et al. 2024 296.26 23.952 0.475 – – –
Hunt & Reffert 2023 296.274 23.974 0.476 -1.754 -5.148 28.832
Just et al. 2023 296.312 23.897 – – – –
Dias et al. 2021 296.269 23.965 0.464 -1.738 -5.116 –
Cantat-Gaudin et al. 2020 296.261 23.977 0.463 -1.741 -5.115 –
Cantat-Gaudin & Anders 2020 296.261 23.977 0.463 -1.741 -5.115 –
Liu & Pang 2019 296.248 23.936 0.465 -1.734 -5.113 –
Dias et al. 2019 296.35 23.917 0.458 -1.789 -5.094 107.34
Soubiran et al. 2018 296.261 23.977 – – – 126.71
Cantat-Gaudin et al. 2018 296.261 23.977 0.463 -1.741 -5.115 –
Loktin & Popova 2017 296.28 23.9 – -2.619 -5.081 -5.0
Kharchenko et al. 2016 296.312 23.897 – – – –
Dias et al. 2014 296.35 23.917 – -1.13 -4.1 –
Kharchenko et al. 2013 296.317 23.9 – -3.3 -4.34 -5.0
Gozha et al. 2012 296.35 23.917 – – – –
Piskunov et al. 2008 296.346 23.915 – – – –
Kharchenko et al. 2007 296.35 23.92 – 0.23 – -5.0
Kharchenko et al. 2005 296.35 23.92 – -1.88 -4.24 -5.0
Kharchenko et al. 2003 296.35 23.93 – -0.47 -3.6 –
Dias et al. 2002 296.35 23.917 – -1.13 -4.1 1.0

💡 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] Bfr BSS
Almeida et al. 2025 1.83 2.68 – 12 – 934 – –
Hunt & Reffert 2024 – – – – – 2203* – –
Celli et al. 2024 – – – 12 – 730 – –
Cavallo et al. 2024 2.06 2.82 – 7 0.180 – – –
Hunt & Reffert 2023 2.02 3.12 2.56 6 – – – –
Just et al. 2023 – – – 6 – 287 – –
Dias et al. 2021 1.83 2.68 – 12 0.185 – – –
Cantat-Gaudin et al. 2020 2.09 2.74 – 11 – – – –
Cantat-Gaudin & Anders 2020 2.03 – – – – – – –
Liu & Pang 2019 – – – 8 0.500 – – –
Dias et al. 2019 1.37 2.76 – 13 -2.028 – – –
Soubiran et al. 2018 2.03 – – – – – – –
Cantat-Gaudin et al. 2018 2.03 – – – – – – –
Loktin & Popova 2017 1.94 1.72 – 562 – – – –
Kharchenko et al. 2016 1.67 2.79 – 6 – – – –
Kharchenko et al. 2013 1.67 2.79 – 6 – – – –
Gozha et al. 2012 1.67 – – 8 – 8913 – –
Piskunov et al. 2008 2.00 2.79 – 8 – – – –
Kharchenko et al. 2005 2.00 2.79 – 8 – – – –
Kharchenko et al. 2003 1.67 2.63 – – – – – –
Dias et al. 2002 2.00 2.79 – 8 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization
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Roslund 2 UCC
Roslund 2 HUNT23
Roslund 2 CANTAT20
Galactocentric position diagram