Danks 2

(MWSC 2093)

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0.75 UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.48
Clit
1.0
Cdup
Nm (P>50%) 127
Core radius and density 1.3 [pc], 9.9 [pc-2]
C3 classification AA
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.48 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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Danks 2 is a rich, very dense object of very high C3 quality. Its parallax locates it at a large* distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, metal-rich, very young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~7.17 kpc) differs significantly from the median photometric distance (~3.80 kpc).

Note: This object shares a very small percentage of members with 2 later reported entries. See table with shared members information.

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.03 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.03 (50th percentile).

Piecka & Paunzen (2021)
Belongs to cluster aggregate 'Agg26' along with Danks 1.

Morales et al. (2013)
Classified as morphological type 'OC1' (totally exposed cluster still physically associated with gas). Morphological flag: exposed cluster, without submm emission.

Data
🔍 Search references for Danks 2 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– 198.228 -62.682 0.14 -7.121 -0.571 107.4
Hunt & Reffert 2024 198.223 -62.68 0.14 -7.146 -0.619 -36.519
Celli et al. 2024 198.222 -62.681 – – – –
Cavallo et al. 2024 198.194 -62.695 0.138 – – –
Hunt & Reffert 2023 198.223 -62.68 0.14 -7.146 -0.619 -36.519
Just et al. 2023 198.214 -62.664 – – – –
Cantat-Gaudin et al. 2020 198.222 -62.681 0.129 -7.016 -0.336 –
Cantat-Gaudin & Anders 2020 198.222 -62.681 0.129 -7.016 -0.336 –
Cantat-Gaudin et al. 2018 198.222 -62.681 0.129 -7.016 -0.336 –
Kharchenko et al. 2016 198.214 -62.664 – – – –
Dias et al. 2014 198.225 -62.68 – -9.7 -4.99 –
Kharchenko et al. 2013 198.225 -62.667 – -12.51 -1.98 –
Morales et al. 2013 198.225 -62.678 – – – –
Bukowiecki et al. 2011 198.225 -62.68 – – – –
Dias et al. 2002 198.229 -62.681 – -23.0 -11.0 -44.0
Lynga 1987 198.221 -62.679 – – – –

💡 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– 3.8 6.785 2.65 4 0.830 3078 – –
Hunt & Reffert 2024 5.63 6.15 2.65 219 – 5878(1) – –
Celli et al. 2024 – – – 2 – 7812 – –
Cavallo et al. 2024 3.56 5.47 – 51 0.830 – – –
Hunt & Reffert 2023 5.63 6.15 2.65 219 – – – –
Just et al. 2023 – – – 2 – 49 – –
Kounkel et al. 2020 4.44 7.49 – 2 – – – –
Cantat-Gaudin & Anders 2020 6.32 – – – – – – –
Cantat-Gaudin et al. 2018 6.32 – – – – – – –
Kharchenko et al. 2016 2.23 7.42 – 2 – – – –
Kharchenko et al. 2013 2.23 7.42 – 2 – – – –
Morales et al. 2013 3.80 – – 4 – – – –
Bukowiecki et al. 2012 – – – – – 277 – –
Bukowiecki et al. 2011 0.39(1) 4.67 – 71 – – – –
Dias et al. 2002 3.60 7.57 – 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
DBSB 134 3.9 198.38 -62.72 0.17 -6.99 -0.6 -31.82 0.12
DBSB 130 1.6 198.12 -62.77 0.15 -7.28 -0.65 -12.55 0.13

💡 Note: The % column shows the percentage of members that Danks 2 shares with each listed object.

Visualization
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Danks 2 UCC
Danks 2 HUNT23
Danks 2 CANTAT20
Galactocentric position diagram