SAI 86

(MWSC 1435)

0.77 UTI

0.77

C_N

1.0

C_dens

0.75

C_C3

0.68

C_lit

1.0

C_dup

N_m (P>50%) 144

Core radius and density 1.1 [pc], 7.8 [pc^-2]

C3 classification AB

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.68 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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SAI 86 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is moderately studied in the literature.

Distant Moderate extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.0895, e_all=0.0905.

Data

🔍 Search references for SAI 86 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–	122.052	-36.61	0.249	-3.102	2.974	62.825
Li et al.	2025	122.055	-36.606	0.219	-3.111	2.931	–
Hu & Soubiran	2025	122.061	-36.622	–	–	–	–
Almeida et al.	2025	122.053	-36.609	–	–	–	–
Hunt & Reffert	2024	122.051	-36.609	0.249	-3.084	2.984	60.985
Cavallo et al.	2024	122.061	-36.622	0.249	–	–	–
Hunt & Reffert	2023	122.051	-36.609	0.249	-3.084	2.984	60.985
Almeida et al.	2023	122.06	-36.606	–	–	–	–
Just et al.	2023	122.058	-36.588	–	–	–	–
Jadhav & Subramaniam	2021	122.055	-36.606	–	–	–	–
Dias et al.	2021	122.053	-36.609	0.211	-3.124	2.949	–
Cantat-Gaudin et al.	2020	122.055	-36.606	0.219	-3.111	2.931	–
Cantat-Gaudin & Anders	2020	122.055	-36.606	0.219	-3.111	2.931	–
Soubiran et al.	2018	122.055	-36.606	–	–	–	60.97
Bica et al.	2019	122.058	-36.608	–	–	–	–
Cantat-Gaudin et al.	2018	122.055	-36.606	0.219	-3.111	2.931	–
Dias et al.	2018	–	–	–	-3.04	2.66	–
Sampedro et al.	2017	122.062	-36.609	–	-1.11	1.31	–
Kharchenko et al.	2016	122.058	-36.588	–	–	–	–
Dias et al.	2014	122.062	-36.609	–	-1.24	1.43	–
Kharchenko et al.	2013	122.062	-36.59	–	-3.74	0.42	–
Glushkova et al.	2010	122.062	-36.609	–	–	–	–
Dias et al.	2002	122.062	-36.609	–	-1.24	1.43	–

💡 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–	3.63	1.99	1.57	447	-0.113	717	0.56	0
Li et al.	2025	4.46	2.21	–	398	0.122	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.240⁽⁵⁾	–	–	–
Almeida et al.	2025	3.28	1.99	–	701	–	717	–	–
Hunt & Reffert	2024	3.63	1.81	1.57	354	–	887⁽¹⁾	–	–
Cavallo et al.	2024	2.92	1.72	–	1023	-0.030	–	–	–
Hunt & Reffert	2023	3.63	1.81	1.57	354	–	–	–	–
Almeida et al.	2023	3.29	2.06	–	652	-0.130	628⁽¹⁾	0.56	–
Just et al.	2023	–	–	–	447	–	140	–	–
Jadhav & Subramaniam	2021	3.63	1.72	–	562	–	991	–	0⁽¹⁾
Dias et al.	2021	3.28	1.99	–	701	-0.113	–	–	–
Cantat-Gaudin et al.	2020	3.63	1.72	–	562	–	–	–	–
Kounkel et al.	2020	3.82	1.94	–	437	–	–	–	–
Cantat-Gaudin & Anders	2020	4.03	–	–	–	–	–	–	–
Soubiran et al.	2018	4.03	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.03	–	–	–	–	–	–	–
Kharchenko et al.	2016	3.02	2.23	–	447	–	–	–	–
Kharchenko et al.	2013	3.02	2.23	–	447	–	–	–	–
Glushkova et al.	2010	3.03	2.18	–	398	–	–	–	–
Dias et al.	2002	3.03	2.18	–	398	–	–	–	–

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

Visualization

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