Alessi 191

0.35 UTI

0.28

C_N

0.7

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 28

Radius (P>50% members) 9.5 [arcmin]

C_N 0.28 Poorly populated
C_dens 0.7 Moderately dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Alessi 191 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.

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

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for Alessi 191 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	–	282.126	22.045	0.978	-1.046	2.986	-9.251
Cavallo et al.	2024	282.109	22.006	0.987	–	–	–
Hunt & Reffert	2023	282.135	22.061	0.979	-1.049	3.03	-8.989
Bica et al.	2019	282.117	22.054	–	–	–	–

💡 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]	Bfr	BSS
Cavallo et al.	2024	1.05	0.96	–	389	-0.060	–	–	–
Hunt & Reffert	2023	0.98	0.45	0.68	957	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 577	82.1	282.14	22.06	0.98	-1.02	3.01	-9.25	0.03

💡 Note: The % column shows the percentage of members that Alessi 191 shares with each listed object.

Visualization

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