IRAS 20306+4005

(MWSC 3361)

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0.68 UTI
0.64
CN
1.0
Cdens
1.0
CC3
0.38
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 79
Radius (P>50% members) 4.3 [arcmin]
  • CN 0.64 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.38 Poorly studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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IRAS 20306+4005 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a close* distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~0.98 kpc) differs significantly from the median photometric distance (~1.65 kpc).

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

Relatively close High extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Wood sample.

Data
🔍 Search references for IRAS 20306+4005 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 – 308.049 40.292 1.023 -1.791 -4.003 –
Hunt & Reffert 2024 308.059 40.292 1.009 -1.811 -3.997 4.021
Cavallo et al. 2024 308.061 40.297 1.026 – – –
Hunt & Reffert 2023 308.059 40.292 1.009 -1.811 -3.997 4.021
Just et al. 2023 308.11 40.282 – – – –
Kharchenko et al. 2016 308.11 40.282 – – – –
Kharchenko et al. 2013 308.115 40.285 – 0.16 0.02 -9.8

💡 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
Hunt & Reffert 2024 – – – – – 300* – –
Cavallo et al. 2024 1.27 2.86 – 5 -0.050 – – –
Hunt & Reffert 2023 0.93 3.70 2.51 5 – – – –
Just et al. 2023 – – – 3 – 240 – –
Kharchenko et al. 2016 2.02 4.52 – 3 – – – –
Kharchenko et al. 2013 2.02 4.52 – 3 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 1011 54.4 308.05 40.29 1.03 -1.66 -4.07 – 0.05

💡 Note: The % column shows the percentage of members that IRAS 20306+4005 shares with each listed object.

Visualization
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IRAS 20306+4005 UCC
IRAS 20306+4005 HUNT23
Galactocentric position diagram