SAI 149

(MWSC 3748)

0.71 UTI

0.38

C_N

1.0

C_dens

0.62

C_C3

0.78

C_lit

1.0

C_dup

N₅₀ (P>50% members) 38

Stellar density (N₅₀/rad) 9.4 [N/pc²]

C3 classification CA

C_N 0.38 Poorly populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.78 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 149 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, near 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 age and metallicity parameters (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~3.63 kpc) differs significantly from the median photometric distance (~2.55 kpc).

Relatively close High extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Data

🔍 Search references for SAI 149 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–	354.501	60.54	0.275	-3.838	-1.693	-67.916
Almeida et al.	2025	354.494	60.562	–	–	–	–
Hunt & Reffert	2024	354.512	60.541	0.275	-3.809	-1.709	-67.935
Cavallo et al.	2024	354.525	60.545	0.272	–	–	–
Hunt & Reffert	2023	354.512	60.541	0.275	-3.809	-1.709	-67.935
Dias et al.	2021	354.494	60.562	0.306	-3.903	-1.593	-67.324
Cantat-Gaudin et al.	2020	354.506	60.541	0.304	-3.901	-1.633	–
Sánchez et al.	2020	354.508	60.549	–	-3.837	-1.706	–
Cantat-Gaudin & Anders	2020	354.506	60.541	0.304	-3.901	-1.633	–
Soubiran et al.	2018	354.506	60.541	–	–	–	-67.52
Bica et al.	2019	354.519	60.548	–	–	–	–
Cantat-Gaudin et al.	2018	354.506	60.541	0.304	-3.901	-1.633	–
Loktin & Popova	2017	354.51	60.549	–	-1.397	-2.203	–
Dias et al.	2014	354.508	60.549	–	-1.57	-2.16	–
Glushkova et al.	2010	354.507	60.549	–	–	–	–
Dias et al.	2002	354.508	60.549	–	-1.57	-2.16	–

💡 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–	2.55	3.44	1.1	226	0.317	284	–	–
Almeida et al.	2025	2.55	3.22	–	296	–	272	–	–
Hunt & Reffert	2024	–	–	–	–	–	296⁽¹⁾	–	–
Cavallo et al.	2024	2.52	3.66	–	347	0.490	–	–	–
Hunt & Reffert	2023	3.43	4.12	1.10	86	–	–	–	–
Dias et al.	2021	2.55	3.22	–	296	0.143	–	–	–
Cantat-Gaudin et al.	2020	3.42	2.92	–	282	–	–	–	–
Cantat-Gaudin & Anders	2020	3.00	–	–	–	–	–	–	–
Soubiran et al.	2018	3.00	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.00	–	–	–	–	–	–	–
Loktin & Popova	2017	0.92	2.51	–	170	–	–	–	–
Glushkova et al.	2010	2.37	4.00	–	158	–	–	–	–
Dias et al.	2002	2.37	4.00	–	158	–	–	–	–

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

Visualization

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