Collinder 394

(MWSC 3011; OCL 42; ESO 592 03; FoF 2272)

Click to load Aladin Lite
0.14 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
0.14
Cdup
Nm (P>50%) 628
Core radius and density 3.1 [pc], 6.2 [pc-2]
C3 classification AA
  • CN 1.0 Very rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 0.14 Likely duplicate
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Collinder 394 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.

⚠ī¸ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Yan et al. (2026)
Number of WDs: expected from single-star evolution N=6, with probability of formation through binary evolution >=0.5 N=1.

Palma et al. (2025)
Classified as genetic pair P192, along with NGC_6716.

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

Hu et al. (2021)
Ellipticities (core, all): e_core=0.5059, e_all=0.1444.

Rain et al. (2021)
This cluster was include in (Dias et al., 2002A&A...389..871D, Cat. B/ocl) however, parameters log(t)=7.969, Av=0.683, [Fe/H]=0.00 were taken from Bossini et al. (2019A&A...623A.108B, Cat. J/A+A/623/A108). The distance d= 659.4 (dmode+01) of Cantat-Gaudin et al. (2018A&A...618A..93C, Cat. J/A+A18/A93) was use to fit the isochrone.

Ahumada & Lapasset (2007)
The dereddened colour-magnitude diagram in (1985AJ.....90.1231T) was examined.

Data
🔍 Search references for Collinder 394 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 283.191 -20.146 1.383 -1.483 -5.938 6.621
Yan et al. 2026 283.058 -20.272 1.336 -1.453 -5.874 –
Li et al. 2025 283.092 -20.229 1.388 -1.459 -5.882 –
Almeida et al. 2025 283.06 -20.224 – – – –
Alfonso et al. 2024 283.179 -20.165 1.337 -1.483 -5.94 –
Hunt & Reffert 2024 283.058 -20.272 1.336 -1.453 -5.874 8.744
Cavallo et al. 2024 282.98 -20.249 1.346 – – –
Hunt & Reffert 2023 283.058 -20.272 1.336 -1.453 -5.874 8.744
Almeida et al. 2023 283.078 -20.214 – – – –
Cordoni et al. 2023 283.06 -20.224 1.389 -1.465 -5.882 –
Just et al. 2023 283.072 -20.201 – – – –
He et al. 2022 283.262 -20.105 1.382 -1.482 -5.958 –
Tarricq et al. 2022 283.06 -20.235 1.372 -1.485 -5.922 –
Jaehnig et al. 2021 283.109 -20.243 1.405 -1.496 -5.861 –
Rain et al. 2021 283.092 -20.229 1.388 -1.459 -5.882 –
Dias et al. 2021 283.06 -20.224 1.389 -1.465 -5.882 21.626
Cantat-Gaudin et al. 2020 283.092 -20.229 1.388 -1.459 -5.882 –
Cantat-Gaudin & Anders 2020 283.092 -20.229 1.388 -1.459 -5.882 –
Liu & Pang 2019 283.116 -20.219 1.39 -1.493 -5.875 –
Bossini et al. 2019 283.092 -20.229 – – – –
Soubiran et al. 2018 283.092 -20.229 – – – 13.86
Bica et al. 2019 283.051 -20.221 – – – –
Cantat-Gaudin et al. 2018 283.092 -20.229 1.388 -1.459 -5.882 –
Dib et al. 2018 283.08 -20.2 – – – –
Loktin & Popova 2017 283.065 -20.203 – -0.907 -6.022 -1.8
Sampedro et al. 2017 283.067 -20.203 – 1.91 -3.64 –
Joshi et al. 2016 283.08 -20.2 – – – –
Kharchenko et al. 2016 283.072 -20.201 – – – –
Dias et al. 2014 283.067 -20.203 – 1.96 -3.78 –
Kharchenko et al. 2013 283.08 -20.2 – -3.0 -6.35 -1.8
Gozha et al. 2012 283.067 -20.203 – – – –
Piskunov et al. 2008 283.098 -20.199 – – – –
Kharchenko et al. 2007 283.06 -20.2 – 0.43 – -1.85
Piskunov et al. 2007 283.098 -20.199 – – – –
Ahumada & Lapasset 2007 283.125 -20.317 – – – –
van den Bergh 2006 283.1 -20.2 – – – –
Kharchenko et al. 2005 283.11 -20.2 – -3.03 -6.31 -1.86
Kharchenko et al. 2003 283.09 -20.3 – -3.28 -7.37 –
Chen et al. 2003 282.757 -20.264 – -4.8 -4.78 6.0
Dias et al. 2002 283.067 -20.203 – 1.96 -3.78 6.0
Dambis 1999 283.067 -20.203 – – – –
Lynga 1987 283.345 -20.386 – – – –

💡 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– 0.69 0.76 0.97 76 0.152 676 0.375 0
Yan et al. 2026 – – – 91 – – – –
Li et al. 2025 0.72 0.72 – 108 0.158 – – –
Almeida et al. 2025 0.69 0.90 – 86 – 402 – –
Alfonso et al. 2024 0.70 0.54 – 185 0.151 – – –
Hunt & Reffert 2024 0.68 0.62 0.97 84 – 1984(1) – –
Cavallo et al. 2024 0.74 0.94 – 102 0.230 – – –
Hunt & Reffert 2023 0.68 0.62 0.97 84 – – – –
Almeida et al. 2023 0.70 0.89 – 121 0.055 545(1) 0.51 –
Cordoni et al. 2023 0.69 0.90 – 86 0.152 1340 0.24 0(1)
Just et al. 2023 – – – 72 – 62 – –
He et al. 2022 – 0.85 – 71 – – – –
Tarricq et al. 2022 0.69 – – 93 – – – –
Jaehnig et al. 2021 0.71(1) – – – – – – –
Rain et al. 2021 0.71 0.69 – 91 – – – 0
Dias et al. 2021 0.69 0.90 – 86 0.152 – – –
Cantat-Gaudin et al. 2020 0.70 0.54 – 91 – – – –
Kounkel et al. 2020 0.69 0.82 – 107 – – – –
Cantat-Gaudin & Anders 2020 0.71 – – – – – – –
Liu & Pang 2019 – – – 50 0.250 – – –
Bossini et al. 2019 0.70 0.68 – 93 0.000 – – –
Soubiran et al. 2018 0.71 – – – – – – –
Cantat-Gaudin et al. 2018 0.71 – – – – – – –
Dib et al. 2018 0.67 – – 72 – – – –
Loktin & Popova 2017 0.71 0.74 – 64 – – – –
Joshi et al. 2016 0.67 0.75 – 72 – 676 – –
Kharchenko et al. 2016 0.67 0.75 – 72 – – – –
Kharchenko et al. 2013 0.67 0.75 – 72 – – – –
Gozha et al. 2012 0.69 – – 64 – 676 – –
Piskunov et al. 2008 0.70 0.76 – 72 – 1191(1) – –
Piskunov et al. 2007 0.70 0.76 – 72 – 459 – –
Ahumada & Lapasset 2007 – 0.76 – 63 – – – 0
van den Bergh 2006 0.69 0.76 – 63 – – – –
Kharchenko et al. 2005 0.70 0.76 – 72 – – – –
Kharchenko et al. 2003 0.69 0.76 – – – – – –
Chen et al. 2003 0.69 – – 60 – – – –
Dias et al. 2002 0.69 0.74 – 64 – – – –
Dambis 1999 0.60 0.79 – 79 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
NGC 6716 86.5 283.37 -20.04 1.39 -1.49 -5.97 6.37 1.0
CWNU 1185 4.0 283.46 -20.05 1.48 -1.55 -6.0 -0.34 0.0

💡 Note: The % column shows the percentage of members that Collinder 394 shares with each listed object.

Visualization
ℹī¸
Collinder 394 UCC
Collinder 394 HUNT23
Collinder 394 CANTAT20
Galactocentric position diagram