Alessi 11

(MWSC 3321)

0.04 UTI

0.0

C_N

0.05

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 12

Core radius and density 1.9 [pc], 0.3 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Alessi 11 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, well below the mid-plane. No fundamental parameter values are available for this object. It is rarely studied in the literature, with no articles listed in the last 7 years.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

No fundamental parameters

Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010). List of clusters and alike reported by B. Alessi.

Dias et al. (2002)
Asterism (Alessi, B. S. 2005, private communication); cat V3.5 (Jan 2016)

Data

🔍 Search references for Alessi 11 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–	305.3	18.376	0.273	-3.319	-5.319	-39.681
Bica et al.	2019	305.348	18.357	–	–	–	–
Alessi et al.	2003	305.3	18.4	–	-0.3	-9.6	–

💡 Note: The UCC values are estimated from its identified members.

Visualization

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