SAI 17

(MWSC 179)

0.84 UTI

0.69

C_N

1.0

C_dens

0.75

C_C3

0.87

C_lit

1.0

C_dup

N₅₀ (P>50% members) 88

Stellar density (N₅₀/rad) 13.4 [N/pc²]

C3 classification AB

C_N 0.69 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.87 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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SAI 17 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is well-studied in the literature.

Distant High extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for SAI 17 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–	35.21	59.187	0.182	-0.176	-0.674	-35.446
Hu & Soubiran	2025	35.202	59.182	–	–	–	–
Almeida et al.	2025	35.211	59.188	–	–	–	–
Hunt & Reffert	2024	35.222	59.187	0.188	-0.195	-0.667	-35.755
Cavallo et al.	2024	35.202	59.182	0.181	–	–	–
Hunt & Reffert	2023	35.222	59.187	0.188	-0.195	-0.667	-35.755
Just et al.	2023	35.2	59.198	–	–	–	–
Dias et al.	2021	35.211	59.188	0.121	-0.13	-0.683	–
Cantat-Gaudin et al.	2020	35.218	59.188	0.148	-0.123	-0.682	–
Cantat-Gaudin & Anders	2020	35.218	59.188	0.148	-0.123	-0.682	–
Soubiran et al.	2018	35.218	59.188	–	–	–	-35.13
Bica et al.	2019	35.211	59.187	–	–	–	–
Cantat-Gaudin et al.	2018	35.218	59.188	0.148	-0.123	-0.682	–
Kharchenko et al.	2016	35.2	59.198	–	–	–	–
Dias et al.	2014	35.2	59.185	–	-0.21	-0.5	–
Kharchenko et al.	2013	35.212	59.2	–	0.03	-0.32	–
Kharchenko et al.	2012	35.212	59.2	–	0.03	-0.32	–
Glushkova et al.	2010	35.201	59.185	–	–	–	–
Dias et al.	2002	35.2	59.185	–	0.03	-0.32	–

💡 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–	4.68	3.155	1.72	794	-0.340	722	–	–
Hu & Soubiran	2025	–	–	–	–	-0.320⁽⁵⁾	–	–	–
Almeida et al.	2025	5.45	3.15	–	817	–	722	–	–
Hunt & Reffert	2024	–	–	–	–	–	1189⁽¹⁾	–	–
Cavallo et al.	2024	4.68	3.23	–	708	-0.340	–	–	–
Hunt & Reffert	2023	4.49	3.16	1.72	458	–	–	–	–
Just et al.	2023	–	–	–	794	–	332	–	–
Dias et al.	2021	5.45	3.15	–	817	-0.365	–	–	–
Cantat-Gaudin et al.	2020	6.05	2.49	–	1175	–	–	–	–
Cantat-Gaudin & Anders	2020	5.66	–	–	–	–	–	–	–
Soubiran et al.	2018	5.66	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	5.66	–	–	–	–	–	–	–
Kharchenko et al.	2016	4.00	3.25	–	794	–	–	–	–
Kharchenko et al.	2013	4.00	3.25	–	794	–	–	–	–
Kharchenko et al.	2012	4.00	3.25	–	794	–	–	–	–
Glushkova et al.	2010	3.80	3.04	–	794	–	–	–	–
Dias et al.	2002	3.80	3.04	–	794	–	–	–	–

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

Visualization

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