ASCC 4

(MWSC 87)

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0.33 UTI
0.0
CN
0.11
Cdens
0.25
CC3
0.65
Clit
1.0
Cdup
N50 (P>50% members) 18
Radius (P>50% members) 6.1 [arcmin]
C3 classification CC
  • CN 0.0 Sparse
  • Cdens 0.11 Very loose
  • CC3 0.25 Low quality
  • Clit 0.65 Moderately 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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ASCC 4 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate* distance, near the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~3.20 kpc) differs significantly from the median photometric distance (~0.75 kpc).

Close Low extinction Intermediate age

Data
🔍 Search references for ASCC 4 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– 13.245 61.62 0.312 -2.414 -0.701 -79.98
Just et al. 2023 13.309 61.597 – – – –
Bica et al. 2019 13.297 61.581 – – – –
Kharchenko et al. 2016 13.309 61.597 – – – –
Dias et al. 2014 13.292 61.58 – -1.1 0.19 –
Kharchenko et al. 2013 13.32 61.6 – -1.15 -0.63 -9.2
Gozha et al. 2012 13.292 61.58 – – – –
Kharchenko et al. 2012 13.32 61.6 – -1.15 -0.63 -9.24
Piskunov et al. 2008 13.276 61.581 – – – –
Kharchenko et al. 2007 13.29 61.58 – 0.4 – -9.24
Kharchenko et al. 2005 13.29 61.58 – 0.11 -1.48 -9.55
Dias et al. 2002 13.292 61.58 – -1.15 -0.63 -9.24

💡 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– 0.75 0.855 – 333 – 312 – –
Just et al. 2023 – – – 447 – 8 – –
Kharchenko et al. 2016 0.55 0.78 – 447 – – – –
Kharchenko et al. 2013 0.55 0.78 – 447 – – – –
Gozha et al. 2012 0.75 – – 219 – 617 – –
Kharchenko et al. 2012 0.55 0.78 – 447 – – – –
Piskunov et al. 2008 0.75 0.93 – 219 – – – –
Kharchenko et al. 2005 0.75 0.93 – 219 – – – –
Dias et al. 2002 0.75 0.93 – 219 – – – –

Visualization
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ASCC 4 UCC
Galactocentric position diagram