Muzzio 1

(FSR 1456; MWSC 1606)

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0.65 UTI
0.57
CN
0.7
Cdens
0.75
CC3
0.61
Clit
1.0
Cdup
Nm (P>50%) 65
Core radius and density 1.4 [pc], 3.5 [pc-2]
C3 classification AB
  • CN 0.57 Moderately populated
  • Cdens 0.7 Moderately dense
  • CC3 0.75 High quality
  • Clit 0.61 Moderately 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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Muzzio 1 is a moderately populated, moderately dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a metal-rich, very young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is moderately studied in the literature.

Note: This object shares a moderate percentage of members with 3 later reported entries. See table with shared members information.

Palma et al. (2025)
Part of multiple system G142, along with HSC_2168 and Collinder_205.

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.07 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.07 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.3707, e_all=0.224.

Data
🔍 Search references for Muzzio 1 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– 134.49 -47.729 0.538 -5.259 4.319 39.305
Hunt & Reffert 2024 134.503 -47.697 0.533 -5.221 4.307 42.984
Celli et al. 2024 134.478 -47.761 – – – –
Cavallo et al. 2024 134.441 -47.851 0.534 – – –
Hunt & Reffert 2023 134.503 -47.697 0.533 -5.221 4.307 42.984
Just et al. 2023 134.485 -47.692 – – – –
Cantat-Gaudin et al. 2020 134.478 -47.761 0.519 -5.261 4.224 –
Cantat-Gaudin & Anders 2020 134.478 -47.761 0.519 -5.261 4.224 –
Soubiran et al. 2018 134.478 -47.761 – – – 135.64
Cantat-Gaudin et al. 2018 134.478 -47.761 0.519 -5.261 4.224 –
Dias et al. 2018 – – – -7.36 5.05 –
Dib et al. 2018 134.49 -47.695 – – – –
Sampedro et al. 2017 134.3 -47.767 – -4.2 4.57 –
Joshi et al. 2016 134.49 -47.695 – – – –
Kharchenko et al. 2016 134.485 -47.692 – – – –
Dias et al. 2014 134.3 -47.767 – -4.22 4.56 –
Kharchenko et al. 2013 134.49 -47.695 – -4.5 5.31 -13.0
Bukowiecki et al. 2011 134.5 -47.702 – – – –
Froebrich et al. 2007 134.5 -47.704 – – – –
Dias et al. 2002 134.3 -47.767 – -4.22 4.56 –
Lynga 1987 134.299 -47.772 – – – –

💡 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– 1.8 3.85 3.02 5 0.760 265 – –
Hunt & Reffert 2024 1.80 3.85 3.02 13 – 965(1) – –
Celli et al. 2024 – – – 8 – 265 – –
Cavallo et al. 2024 2.00 3.38 – 19 0.760 – – –
Hunt & Reffert 2023 1.80 3.85 3.02 13 – – – –
Just et al. 2023 – – – 3 – 71 – –
Cantat-Gaudin et al. 2020 1.86 3.20 – 8 – – – –
Kounkel et al. 2020 1.95 3.41 – 41 – – – –
Cantat-Gaudin & Anders 2020 1.82 – – – – – – –
Soubiran et al. 2018 1.82 – – – – – – –
Cantat-Gaudin et al. 2018 1.82 – – – – – – –
Dib et al. 2018 1.39 – – 3 – – – –
Joshi et al. 2016 1.39 4.70 – 3 – – – –
Kharchenko et al. 2016 1.39 4.70 – 3 – – – –
Kharchenko et al. 2013 1.39 4.70 – 3 – – – –
Dias et al. 2002 1.30 3.25 – 5 – – – –
Lynga 1987 1.70 – – 5 – – – –

(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 0498 26.2 134.45 -47.81 0.54 -5.24 4.27 72.01 0.04
OC 0500 20.0 134.59 -47.87 0.53 -5.07 4.33 20.95 0.1
RCW38 20.0 134.59 -47.63 0.55 -5.2 4.41 -42.7 0.13

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

Visualization
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Muzzio 1 UCC
Muzzio 1 HUNT23
Muzzio 1 CANTAT20
Galactocentric position diagram