FSR 0761

(MWSC 574)

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0.54 UTI
0.75
CN
0.29
Cdens
0.75
CC3
0.45
Clit
1.0
Cdup
Nm (P>50%) 101
Core radius and density 2.4 [pc], 1.4 [pc-2]
C3 classification AB
  • CN 0.75 Rich
  • Cdens 0.29 Loose
  • CC3 0.75 High quality
  • Clit 0.45 Poorly studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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FSR 0761 is a rich, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.

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

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data
🔍 Search references for FSR 0761 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 99999– 83.345 39.833 0.321 0.12 -1.32 -3.628
Hu & Soubiran 2025 83.366 39.834 – – – –
Almeida et al. 2025 83.338 39.839 – – – –
Zhang et al. 2024 83.333 39.834 – – – –
Hunt & Reffert 2024 83.333 39.834 0.331 0.101 -1.322 -18.463
Cavallo et al. 2024 83.366 39.834 0.333 – – –
Hunt & Reffert 2023 83.333 39.834 0.331 0.101 -1.322 -18.463
Almeida et al. 2023 83.341 39.84 – – – –
Just et al. 2023 83.33 39.834 – – – –
Dias et al. 2021 83.338 39.839 0.253 0.323 -1.361 -27.299
Sampedro et al. 2017 83.346 39.846 – -2.97 0.93 –
Kharchenko et al. 2016 83.33 39.834 – – – –
Kharchenko et al. 2013 83.34 39.833 – -2.31 -2.5 –
Camargo et al. 2012 83.346 39.846 – – – –
Kharchenko et al. 2012 83.34 39.833 – -2.95 -0.57 –
Froebrich et al. 2007 83.346 39.846 – – – –
Dias et al. 2002 83.346 39.846 – -2.95 -0.57 –

💡 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– 2.68 1.42 1.19 506 -0.119 542 0.54 –
Hu & Soubiran 2025 – – – – -0.190(5) – – –
Almeida et al. 2025 2.48 1.57 – 589 – 325 – –
Zhang et al. 2024 – – – – -0.235(1) – – –
Hunt & Reffert 2024 2.68 1.01 1.19 454 – 759(1) – –
Cavallo et al. 2024 2.62 1.09 – 676 0.000 – – –
Hunt & Reffert 2023 2.68 1.01 1.19 454 – – – –
Almeida et al. 2023 2.44 1.42 – 557 -0.119 188(1) 0.54 –
Just et al. 2023 – – – 4 – 789 – –
Dias et al. 2021 2.48 1.57 – 589 -0.112 – – –
Kharchenko et al. 2016 3.74 3.28 – 4 – – – –
Kharchenko et al. 2013 3.74 3.28 – 4 – – – –
Camargo et al. 2012 2.54 2.78 – 2 – – – –
Kharchenko et al. 2012 3.74 1.12 – 966 – – – –
Dias et al. 2002 3.74 1.12 – 966 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 197 84.2 83.35 39.83 0.33 0.09 -1.31 -28.84 0.08

💡 Note: The % column shows the percentage of members that FSR 0761 shares with each listed object.

Visualization
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FSR 0761 UCC
FSR 0761 HUNT23
Galactocentric position diagram