Kronberger 4

(MWSC 3170; DSH J1945.1+2809)

0.74 UTI

0.7

C_N

1.0

C_dens

0.75

C_C3

0.61

C_lit

1.0

C_dup

N_m (P>50%) 90

Core radius and density 1.5 [pc], 5.3 [pc^-2]

C3 classification AB

C_N 0.7 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.61 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Kronberger 4 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Very distant Moderate extinction Near-solar metallicity Intermediate age Contains BSS

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

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.04 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.04 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.0972, e_all=0.1384.

Data

🔍 Search references for Kronberger 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–	296.295	28.16	0.122	-2.528	-4.885	-43.274
Almeida et al.	2025	296.297	28.16	–	–	–	–
Hunt & Reffert	2024	296.292	28.163	0.13	-2.506	-4.899	-39.104
Cavallo et al.	2024	296.295	28.16	0.13	–	–	–
Hunt & Reffert	2023	296.292	28.163	0.13	-2.506	-4.899	-39.104
Almeida et al.	2023	296.295	28.162	–	–	–	–
Just et al.	2023	296.282	28.165	–	–	–	–
Jadhav & Subramaniam	2021	296.297	28.16	–	–	–	–
Dias et al.	2021	296.297	28.16	0.126	-2.541	-4.817	–
Cantat-Gaudin et al.	2020	296.297	28.16	0.119	-2.542	-4.836	–
Cantat-Gaudin & Anders	2020	296.297	28.16	0.119	-2.542	-4.836	–
Bica et al.	2019	296.298	28.156	–	–	–	–
Cantat-Gaudin et al.	2018	296.297	28.16	0.119	-2.542	-4.836	–
Dias et al.	2018	–	–	–	-2.3	-4.02	–
Sampedro et al.	2017	296.296	28.161	–	-1.87	-5.95	–
Kharchenko et al.	2016	296.282	28.165	–	–	–	–
Dias et al.	2014	296.296	28.161	–	-0.53	-3.04	–
Kharchenko et al.	2013	296.287	28.167	–	-3.93	-5.63	–
Bukowiecki et al.	2011	296.288	28.163	–	–	–	–
Kronberger et al.	2006	296.298	28.161	–	–	–	–
Dias et al.	2002	296.296	28.161	–	-2.8	-4.69	–

💡 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]	B_frac	BSS
UCC	99999–	6.82	2.275	2.21	809	0.072	793	0.84	1
Almeida et al.	2025	7.32	2.36	–	838	–	1111	–	–
Hunt & Reffert	2024	6.58	3.10	2.21	51	–	793⁽¹⁾	–	–
Cavallo et al.	2024	5.25	3.31	–	178	-0.320	–	–	–
Hunt & Reffert	2023	6.59	3.10	2.21	51	–	–	–	–
Almeida et al.	2023	6.87	2.58	–	809	0.072	750⁽¹⁾	0.84	–
Just et al.	2023	–	–	–	1259	–	485	–	–
Jadhav & Subramaniam	2021	6.98	2.19	–	676	–	2001	–	1⁽¹⁾
Dias et al.	2021	7.32	2.36	–	838	0.278	–	–	–
Cantat-Gaudin et al.	2020	6.98	2.19	–	676	–	–	–	–
Kounkel et al.	2020	4.77	2.41	–	832	–	–	–	–
Cantat-Gaudin & Anders	2020	6.77	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	6.77	–	–	–	–	–	–	–
Kharchenko et al.	2016	3.73	1.38	–	1259	–	–	–	–
Kharchenko et al.	2013	3.73	1.38	–	1259	–	–	–	–
Bukowiecki et al.	2011	7.11⁽¹⁾	1.77	–	708	–	–	–	–
Kronberger et al.	2006	7.90	1.77	–	–	–	–	–	–
Dias et al.	2002	7.90	1.77	–	–	–	–	–	–

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

Visualization

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