Kronberger 81

(MWSC 3511; DSH J2126.1+5331; FSR 0313)

0.75 UTI

0.76

C_N

1.0

C_dens

0.75

C_C3

0.61

C_lit

1.0

C_dup

N₅₀ (P>50% members) 114

Stellar density (N₅₀/rad) 11.7 [N/pc²]

C3 classification AB

C_N 0.76 Rich
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 81 is a rich, very dense object of high C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~5.65 kpc) differs significantly from the median photometric distance (~3.98 kpc).

Distant Very high extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Data

🔍 Search references for Kronberger 81 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–	321.54	53.527	0.177	-2.547	-3.283	-34.37
Hu & Soubiran	2025	321.567	53.544	–	–	–	–
Hunt & Reffert	2024	321.539	53.53	0.141	-2.477	-3.218	-36.965
Cavallo et al.	2024	321.566	53.544	0.15	–	–	–
Hunt & Reffert	2023	321.539	53.53	0.141	-2.477	-3.218	-36.965
Just et al.	2023	321.539	53.531	–	–	–	–
Cantat-Gaudin et al.	2020	321.547	53.534	0.228	-2.61	-3.324	–
Zhong et al.	2020	321.547	53.534	–	-2.61	-3.324	-28.495
Cantat-Gaudin & Anders	2020	321.547	53.534	0.228	-2.61	-3.324	–
Soubiran et al.	2018	321.547	53.534	–	–	–	-85.4
Bica et al.	2019	321.542	53.535	–	–	–	–
Cantat-Gaudin et al.	2018	321.547	53.534	0.228	-2.61	-3.324	–
Loktin & Popova	2017	321.54	53.531	–	-0.52	-0.554	–
Kharchenko et al.	2016	321.539	53.531	–	–	–	–
Dias et al.	2014	321.538	53.533	–	0.06	-1.82	–
Kharchenko et al.	2013	321.544	53.534	–	-1.63	-0.97	–
Kharchenko et al.	2012	321.544	53.534	–	-1.63	-0.97	–
Bukowiecki et al.	2011	321.554	53.547	–	–	–	–
Kronberger et al.	2006	321.537	53.533	–	–	–	–
Dias et al.	2002	321.538	53.533	–	0.06	-1.82	–

💡 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–	3.98	5.435	2.5	398	0.000	1592	–	–
Hu & Soubiran	2025	–	–	–	–	-0.490⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	2432⁽¹⁾	–	–
Cavallo et al.	2024	4.06	4.71	–	1288	0.100	–	–	–
Hunt & Reffert	2023	5.24	5.19	2.50	401	–	–	–	–
Just et al.	2023	–	–	–	398	–	1592	–	–
Kounkel et al.	2020	3.40	4.60	–	603	–	–	–	–
Zhong et al.	2020	3.90⁽¹⁾	–	–	–	0.000	–	–	–
Cantat-Gaudin & Anders	2020	3.90	–	–	–	–	–	–	–
Soubiran et al.	2018	3.90	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.90	–	–	–	–	–	–	–
Loktin & Popova	2017	2.49	2.48	–	692	–	–	–	–
Kharchenko et al.	2016	7.50	5.68	–	398	–	–	–	–
Kharchenko et al.	2013	7.50	5.68	–	398	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	1392	–	–
Kharchenko et al.	2012	7.50	5.68	–	398	–	–	–	–
Bukowiecki et al.	2011	1.99⁽¹⁾	8.26	–	316	–	–	–	–
Kronberger et al.	2006	5.90	4.73	–	–	–	–	–	–
Dias et al.	2002	7.50	5.68	–	398	–	–	–	–

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

Visualization

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