Kronberger 2

(MWSC 2898; DSH J1821.3-1417)

0.59 UTI

0.0

C_N

1.0

C_dens

0.75

C_C3

0.6

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 6.2 [N/pc²]

C3 classification BA

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.6 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 2 is a sparse, very dense object of high C3 quality. Its parallax locates it at a relatively close^* distance, near the mid-plane, affected by high extinction. It is catalogued as an intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~1.65 kpc) differs significantly from the median photometric distance (~3.07 kpc).

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Distant High extinction Intermediate age

Palma et al. (2025)
Part of multiple system G129, along with OC_0024, UBC_96, HSC_175 and ASCC_94.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Data

🔍 Search references for Kronberger 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–	275.415	-14.276	0.605	0.027	-1.921	25.9
Hunt & Reffert	2024	275.426	-14.287	0.611	0.047	-1.909	–
Hunt & Reffert	2023	275.426	-14.287	0.611	0.047	-1.909	–
Just et al.	2023	275.322	-14.285	–	–	–	–
Bica et al.	2019	275.329	-14.285	–	–	–	–
Kharchenko et al.	2016	275.322	-14.285	–	–	–	–
Dias et al.	2014	275.329	-14.29	–	2.75	-1.29	–
Kharchenko et al.	2013	275.329	-14.283	–	1.09	0.26	–
Morales et al.	2013	275.329	-14.29	–	–	–	–
Bukowiecki et al.	2011	275.325	-14.291	–	–	–	–
Kronberger et al.	2006	275.329	-14.29	–	–	–	–
Dias et al.	2002	275.329	-14.29	–	1.09	0.26	–

💡 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–	3.07	4.48	1.39	129	–	628	–	–
Hunt & Reffert	2024	–	–	–	–	–	112⁽¹⁾	–	–
Hunt & Reffert	2023	1.59	2.18	1.39	45	–	–	–	–
Just et al.	2023	–	–	–	158	–	1143	–	–
Kharchenko et al.	2016	3.20	5.55	–	158	–	–	–	–
Kharchenko et al.	2013	3.20	5.55	–	158	–	–	–	–
Morales et al.	2013	3.07	–	–	100	–	–	–	–
Dias et al.	2002	3.06	3.41	–	100	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 1877	92.0	275.42	-14.28	0.6	0.02	-1.91	–	0.03

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

Visualization

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