Alessi 250

0.38 UTI

0.28

C_N

1.0

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 28

Stellar density (N₅₀/rad) 14.2 [N/pc²]

C3 classification CA

C_N 0.28 Poorly populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate 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

ℹ️

Alessi 250 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.

Relatively close Moderate extinction Near-solar metallicity Very young

Data

🔍 Search references for Alessi 250 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	275.736	-13.148	0.538	0.388	-1.582	-13.487
Dias et al.	2026	275.749	-13.148	0.53	0.349	-1.598	–

💡 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–	1.72	2.81	–	12	0.177	–	–	–
Dias et al.	2026	1.72	2.81	–	12	0.177	–	–	–

Visualization

ℹ️