Alessi 56

(MWSC 3047; DSH J1906.8+0935; GLIMPSE 19; Mercer 19)

0.50 UTI

0.0

C_N

1.0

C_dens

0.5

C_C3

0.5

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 24

Radius (P>50% members) 2.1 [arcmin]

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.5 Moderately studied
C_dup 1.0 Unique

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

Overview

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Alessi 56 is a sparse, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by very high extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is moderately studied in the literature.

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

Distant Very high extinction Intermediate age

Data

🔍 Search references for Alessi 56 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	–	286.715	9.597	0.28	-2.095	-5.436	–
He et al.	2023	286.722	9.592	0.258	-1.973	-5.357	–
Just et al.	2023	286.716	9.588	–	–	–	–
Sánchez et al.	2020	286.717	9.583	–	-1.805	-5.152	–
Bica et al.	2019	286.714	9.584	–	–	–	–
Kharchenko et al.	2016	286.716	9.588	–	–	–	–
Kharchenko et al.	2013	286.722	9.59	–	0.23	0.17	–
Kronberger et al.	2006	286.717	9.583	–	–	–	–
Dias et al.	2002	286.717	9.583	–	0.23	0.17	–

💡 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
He et al.	2023	4.90	7.40	–	631	–	–	–	–
Just et al.	2023	–	–	–	385	–	902	–	–
Kharchenko et al.	2016	5.75	6.78	–	385	–	–	–	–
Kharchenko et al.	2013	5.75	6.78	–	385	–	–	–	–
Kronberger et al.	2006	3.90*	6.20*	–	–	–	–	–	–
Dias et al.	2002	3.90	6.20	–	–	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
MCM 19	80.0	286.72	9.59	0.28	-2.07	-5.46	–	0.06

💡 Note: The % column shows the percentage of members that Alessi 56 shares with each listed object.

Visualization

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