ESFERA 3

0.08 UTI

0.32

C_N

0.11

C_dens

0.25

C_C3

0.0

C_lit

0.62

C_dup

N_m (P>50%) 32

Core radius and density 3.3 [pc], 0.6 [pc^-2]

C3 classification CC

C_N 0.32 Poorly populated
C_dens 0.11 Very loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 0.62 Likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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ESFERA 3 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a very young cluster (see Parameters). It was recently reported in the literature.

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Very young

Data

🔍 Search references for ESFERA 3 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–	230.092	-57.205	0.403	-2.317	-2.155	-39.995
Corti et al.	2026	230.079	-57.189	–	-2.22	-2.15	–

💡 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–	1.94	2.5	–	10	–	–	–	–
Corti et al.	2026	1.94	2.50	–	10	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
G3CC 24	37.5	230.03	-57.24	0.27	-2.43	-2.14	-38.41	0.11
HSC 2695	25.0	230.22	-57.31	0.28	-2.42	-2.14	-38.41	0.04

💡 Note: The % column shows the percentage of members that ESFERA 3 shares with each listed object.

Visualization

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