Kronberger 69

(SAI 133; MWSC 3227; DSH J2001.9+3126; FSR 0181)

0.61 UTI

0.53

C_N

0.38

C_dens

0.75

C_C3

0.68

C_lit

1.0

C_dup

N_m (P>50%) 56

Core radius and density 1.7 [pc], 1.9 [pc^-2]

C3 classification AB

C_N 0.53 Moderately populated
C_dens 0.38 Loose
C_C3 0.75 High quality
C_lit 0.68 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Kronberger 69 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is moderately studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

Li et al. (2026)
Tidal & Core radii: r_t=162+/-60.9 [pc], r_c=0.34+/-0.0 [pc]; stars within r_t: N~117

Palma et al. (2025)
Classified as optical pair P539, along with UBC_1080.

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

Cavallo et al. (2024)
Gold 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).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.165, e_all=0.1164.

Bica et al. (2019)
Asterisms and cluster alikes by B. Alessi reported in DAML02.

Data

🔍 Search references for Kronberger 69 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	300.509	31.413	0.356	-2.791	-5.245	-13.203
Li et al.	2026	300.5	31.41	–	–	–	–
Almeida et al.	2025	300.49	31.423	–	–	–	–
Hunt & Reffert	2024	300.509	31.42	0.37	-2.776	-5.235	-44.436
Cavallo et al.	2024	300.507	31.403	0.371	–	–	–
Hunt & Reffert	2023	300.509	31.42	0.37	-2.776	-5.235	-44.436
Just et al.	2023	300.483	31.442	–	–	–	–
Dias et al.	2021	300.49	31.423	0.355	-2.719	-5.206	–
Cantat-Gaudin et al.	2020	300.499	31.42	0.351	-2.741	-5.246	–
Cantat-Gaudin & Anders	2020	300.499	31.42	0.351	-2.741	-5.246	–
Bica et al.	2019	300.491	31.441	–	–	–	–
Cantat-Gaudin et al.	2018	300.499	31.42	0.351	-2.741	-5.246	–
Loktin & Popova	2017	300.48	31.445	–	-2.044	-4.582	–
Sampedro et al.	2017	300.496	31.438	–	-2.8	-3.13	–
Dias et al.	2016	300.496	31.438	–	-2.63	-2.75	–
Kharchenko et al.	2016	300.483	31.442	–	–	–	–
Dias et al.	2014	300.496	31.438	–	-2.63	-2.75	–
Kharchenko et al.	2013	300.487	31.445	–	-2.78	-3.63	–
Glushkova et al.	2010	300.495	31.438	–	–	–	–
Kronberger et al.	2006	300.488	31.44	–	–	–	–

💡 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–	2.665	2.985	1.6	71	0.265	596	–	–
Almeida et al.	2025	2.65	2.83	–	12	–	312	–	–
Hunt & Reffert	2024	2.55	2.91	1.60	57	–	596⁽¹⁾	–	–
Cavallo et al.	2024	3.30	3.06	–	43	0.640	–	–	–
Hunt & Reffert	2023	2.55	2.91	1.60	57	–	–	–	–
Just et al.	2023	–	–	–	79	–	3639	–	–
Dias et al.	2021	2.65	2.83	–	12	-0.111	–	–	–
Cantat-Gaudin et al.	2020	2.68	2.46	–	41	–	–	–	–
Kounkel et al.	2020	3.28	3.85	–	81	–	–	–	–
Cantat-Gaudin & Anders	2020	2.63	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.63	–	–	–	–	–	–	–
Loktin & Popova	2017	2.33	1.76	–	589	–	–	–	–
Dias et al.	2016	6.14	5.68	–	71	–	–	–	–
Kharchenko et al.	2016	8.49	6.44	–	79	–	–	–	–
Kharchenko et al.	2013	8.49	6.44	–	79	–	–	–	–
Glushkova et al.	2010	6.14	5.68	–	71	–	–	–	–

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

Visualization

ℹ️

1 2 3