Alessi 15

(MWSC 964; DSH J0643.0+0140)

0.50 UTI

0.25

C_N

1.0

C_dens

0.25

C_C3

0.5

C_lit

1.0

C_dup

N₅₀ (P>50% members) 25

Stellar density (N₅₀/rad) 76.8 [N/pc²]

C3 classification DB

C_N 0.25 Poorly populated
C_dens 1.0 Very dense
C_C3 0.25 Low quality
C_lit 0.5 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 15 is a poorly populated, very dense object of low C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~6.54 kpc) differs significantly from the median photometric distance (~4.35 kpc).

Distant Moderate extinction Old

Data

🔍 Search references for Alessi 15 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–	100.764	1.67	0.153	-0.169	0.53	–
Just et al.	2023	100.755	1.677	–	–	–	–
Cantat-Gaudin et al.	2020	100.767	1.672	0.093	-0.182	0.469	–
Cantat-Gaudin & Anders	2020	100.767	1.672	0.093	-0.182	0.469	–
Bica et al.	2019	100.766	1.671	–	–	–	–
Cantat-Gaudin et al.	2018	100.767	1.672	0.093	-0.182	0.469	–
Kharchenko et al.	2016	100.755	1.677	–	–	–	–
Kharchenko et al.	2013	100.762	1.675	–	1.29	3.31	–
Kronberger et al.	2006	100.767	1.672	–	–	–	–
Dias et al.	2002	100.767	1.672	–	1.29	3.31	–

💡 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–	4.35	1.29	–	1549	–	202	–	–
Just et al.	2023	–	–	–	1549	–	202	–	–
Cantat-Gaudin et al.	2020	6.34	2.18	–	34	–	–	–	–
Cantat-Gaudin & Anders	2020	8.23	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	8.23	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.36	1.29	–	1549	–	–	–	–
Kharchenko et al.	2013	2.36	1.29	–	1549	–	–	–	–
Dias et al.	2002	1.60	0.84	–	1778	–	–	–	–

Visualization

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