Roslund 1

(MWSC 3169; OCL 112)

Click to load Aladin Lite
0.55 UTI
0.41
CN
0.49
Cdens
0.75
CC3
0.55
Clit
1.0
Cdup
Nm (P>50%) 41
Core radius and density 1.3 [pc], 2.5 [pc-2]
C3 classification AB
  • CN 0.41 Poorly populated
  • Cdens 0.49 Loose
  • CC3 0.75 High quality
  • Clit 0.55 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Roslund 1 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is moderately studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Liu et al. (2025)
Classified as primordial binary cluster 301 along with OC_0077.

Palma et al. (2025)
Classified as optical pair P157, along with HSC_450.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.97 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.97 (50th percentile).

Data
🔍 Search references for Roslund 1 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 296.243 17.523 1.134 -0.861 -5.832 -4.783
Hunt & Reffert 2024 296.264 17.549 1.126 -0.874 -5.828 -5.623
Cavallo et al. 2024 296.247 17.491 1.129 – – –
Hunt & Reffert 2023 296.264 17.549 1.126 -0.874 -5.828 -5.623
Just et al. 2023 296.273 17.508 – – – –
Bica et al. 2019 296.288 17.519 – – – –
Dias et al. 2018 – – – -1.73 -4.07 –
Dib et al. 2018 296.28 17.51 – – – –
Sampedro et al. 2017 296.25 17.517 – -4.58 0.66 –
Joshi et al. 2016 296.28 17.51 – – – –
Kharchenko et al. 2016 296.273 17.508 – – – –
Dias et al. 2014 296.25 17.517 – -2.91 0.28 –
Kharchenko et al. 2013 296.28 17.51 – 0.4 -7.21 –
Piskunov et al. 2008 296.241 17.522 – – – –
Kharchenko et al. 2005 296.25 17.52 – 1.18 -7.08 –
Kharchenko et al. 2003 296.28 17.53 – 0.01 -4.63 –
Dias et al. 2002 296.25 17.517 – 1.18 -7.08 –
Lynga 1987 296.289 17.542 – – – –

💡 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 99999– 0.79 0.16 0.81 295 0.190 25 – –
Liu et al. 2025 1.15 0.32 – 54 – – – –
Hunt & Reffert 2024 0.85 0.99 0.81 169 – 115(1) – –
Cavallo et al. 2024 0.86 1.15 – 105 0.190 – – –
Hunt & Reffert 2023 0.85 0.99 0.81 169 – – – –
Just et al. 2023 – – – 582 – 13 – –
Dib et al. 2018 0.79 – – 582 – – – –
Joshi et al. 2016 0.79 0.16 – 582 – 25 – –
Kharchenko et al. 2016 0.79 0.16 – 582 – – – –
Kharchenko et al. 2013 0.79 0.16 – 582 – – – –
Piskunov et al. 2008 0.67 0.16 – 295 – – – –
Kharchenko et al. 2005 0.67 0.16 – 295 – – – –
Kharchenko et al. 2003 0.83 0.47 – – – – – –
Dias et al. 2002 0.67 0.16 – 295 – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0079 63.4 296.24 17.54 1.13 -0.85 -5.85 -7.3 0.0

💡 Note: The % column shows the percentage of members that Roslund 1 shares with each listed object.

Visualization
ℹī¸
Roslund 1 UCC
Roslund 1 HUNT23
Galactocentric position diagram