SAI 106

0.37 UTI

0.76

C_N

0.22

C_dens

0.62

C_C3

0.13

C_lit

1.0

C_dup

N_m (P>50%) 133

Core radius and density 3.9 [pc], 1.1 [pc^-2]

C3 classification AC

C_N 0.76 Rich
C_dens 0.22 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.13 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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SAI 106 is a rich, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by high extinction. It is catalogued as a very massive, near-solar metallicity, old cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with 3 later reported entries. See table with shared members information.

Very distant High extinction Very massive Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Data

🔍 Search references for SAI 106 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–	139.475	-51.016	0.157	-3.543	3.698	33.901
Hu & Soubiran	2025	139.482	-51.011	–	–	–	–
Hunt & Reffert	2024	139.485	-51.001	0.146	-3.542	3.72	33.666
Cavallo et al.	2024	139.482	-51.011	0.149	–	–	–
Hunt & Reffert	2023	139.485	-51.001	0.146	-3.542	3.72	33.666
Bica et al.	2019	139.506	-51.029	–	–	–	–
Glushkova et al.	2010	139.498	-51.029	–	–	–	–

💡 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–	5.54	4.185	2.18	3572	-0.310	9117	–	–
Hu & Soubiran	2025	–	–	–	–	-0.390⁽⁵⁾	–	–	–
Hunt & Reffert	2024	5.93	4.30	2.18	3572	–	9117⁽¹⁾	–	–
Cavallo et al.	2024	5.06	4.07	–	4169	-0.230	–	–	–
Hunt & Reffert	2023	5.93	4.30	2.18	3573	–	–	–	–
Glushkova et al.	2010	5.15	3.22	–	2239	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
VVVX-Obasi 9	96.2	139.49	-51.01	0.16	-3.54	3.67	33.9	0.13
OC 0509	24.8	139.48	-51.02	0.14	-3.54	3.73	33.9	0.0
VVVX-Obasi 5	12.0	139.46	-51.0	0.16	-3.81	3.75	33.09	0.07

💡 Note: The % column shows the percentage of members that SAI 106 shares with each listed object.

Visualization

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