Kronberger 25

(J1822.6-1443; MWSC 2901)

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0.63 UTI
0.49
CN
1.0
Cdens
0.75
CC3
0.45
Clit
1.0
Cdup
Nm (P>50%) 49
Core radius and density 1.1 [pc], 5.4 [pc-2]
C3 classification AB
  • CN 0.49 Poorly populated
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.45 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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Kronberger 25 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a metal-rich, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.

Note: This object shares a small percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

Palma et al. (2025)
Part of multiple system G134, along with CWNU_2051 and HSC_198.

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Bica et al. (2019)
The Preliminary Amateur Open Cluster Catalog, Version 08/03/2003.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, with submm emission not associated with the cluster.

Data
🔍 Search references for Kronberger 25 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– 275.667 -14.725 0.283 -0.324 -1.901 –
Almeida et al. 2025 275.668 -14.723 – – – –
Hunt & Reffert 2024 275.667 -14.724 0.281 -0.328 -1.904 –
Cavallo et al. 2024 275.67 -14.698 0.281 – – –
Hunt & Reffert 2023 275.667 -14.724 0.281 -0.328 -1.904 –
Dias et al. 2021 275.668 -14.723 0.258 -0.385 -1.83 –
Cantat-Gaudin et al. 2020 275.667 -14.727 0.268 -0.343 -1.827 –
Cantat-Gaudin & Anders 2020 275.667 -14.727 0.268 -0.343 -1.827 –
Bica et al. 2019 275.668 -14.732 – – – –
Cantat-Gaudin et al. 2018 275.667 -14.727 0.268 -0.343 -1.827 –
Tadross 2014 275.667 -14.728 – – – –
Morales et al. 2013 275.667 -14.728 – – – –
Bukowiecki et al. 2011 275.667 -14.726 – – – –
Kronberger et al. 2006 275.666 -14.728 – – – –
Dias et al. 2002 275.667 -14.728 – – – –

💡 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– 3.085 3.99 1.5 24 0.654 191 – –
Almeida et al. 2025 3.45 3.82 – 6 – 191 – –
Hunt & Reffert 2024 3.38 4.26 1.50 6 – 944(1) – –
Cavallo et al. 2024 2.58 3.85 – 25 1.080 – – –
Hunt & Reffert 2023 3.38 4.26 1.50 6 – – – –
Dias et al. 2021 3.45 3.82 – 6 0.229 – – –
Kounkel et al. 2020 2.80 3.99 – 23 – – – –
Cantat-Gaudin & Anders 2020 3.37 – – – – – – –
Cantat-Gaudin et al. 2018 3.37 – – – – – – –
Tadross 2014 1.22 4.16 – 50 – – – –
Morales et al. 2013 1.22 – – 50 – – – –
Bukowiecki et al. 2012 – – – – – 39 – –
Bukowiecki et al. 2011 1.64(1) 3.94 – 71 – – – –
Dias et al. 2002 1.22 4.16 – 50 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
Kharchenko 2 18.4 275.59 -14.61 0.32 -0.25 -1.94 -240.39 0.33

💡 Note: The % column shows the percentage of members that Kronberger 25 shares with each listed object.

Visualization
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Kronberger 25 UCC
Kronberger 25 HUNT23
Kronberger 25 CANTAT20
Galactocentric position diagram