Alessi 190

(UBC 5)

0.80 UTI

0.77

C_N

1.0

C_dens

1.0

C_C3

0.62

C_lit

1.0

C_dup

N₅₀ (P>50% members) 156

Stellar density (N₅₀/rad) 18.7 [N/pc²]

C3 classification AA

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.62 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Alessi 190 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is moderately studied in the literature.

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

Close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Alessi 190 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–	238.654	-47.69	1.762	-6.637	-4.167	-18.699
Li et al.	2025	238.548	-47.74	1.785	-6.695	-4.225	–
Alfonso et al.	2024	238.622	-47.68	1.729	-6.618	-4.13	–
Hunt & Reffert	2024	238.748	-47.619	1.754	-6.632	-4.152	-17.938
Cavallo et al.	2024	238.603	-47.702	1.756	–	–	–
Hunt & Reffert	2023	238.748	-47.619	1.754	-6.632	-4.152	-17.938
He et al.	2022	238.711	-47.634	1.756	-6.633	-4.144	–
Tarricq et al.	2022	238.674	-47.684	1.762	-6.618	-4.13	–
Cantat-Gaudin et al.	2020	238.548	-47.74	1.785	-6.695	-4.225	–
Cantat-Gaudin & Anders	2020	238.548	-47.74	1.785	-6.695	-4.225	–
Bica et al.	2019	238.428	-47.735	–	–	–	–
Castro-Ginard et al.	2018	238.429	-47.729	1.788	-6.699	-4.184	-14.91

💡 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–	0.55	0.835	1.64	209	0.037	229	–	–
Li et al.	2025	0.58	0.90	–	450	0.037	–	–	–
Alfonso et al.	2024	0.55	0.26	–	216	0.010	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	229⁽¹⁾	–	–
Cavallo et al.	2024	0.56	1.02	–	257	0.230	–	–	–
Hunt & Reffert	2023	0.53	0.77	1.64	175	–	–	–	–
He et al.	2022	–	1.20	–	79	–	–	–	–
Tarricq et al.	2022	0.54	–	–	209	–	–	–	–
Cantat-Gaudin et al.	2020	0.55	0.26	–	200	–	–	–	–
Cantat-Gaudin & Anders	2020	0.55	–	–	–	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14469	53.8	238.6	-47.7	1.76	-6.64	-4.14	-18.75	0.0

💡 Note: The % column shows the percentage of members that Alessi 190 shares with each listed object.

Visualization

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