SAI 47

(MWSC 526)

0.60 UTI

0.52

C_N

0.44

C_dens

0.62

C_C3

0.71

C_lit

1.0

C_dup

N_m (P>50%) 53

Core radius and density 1.5 [pc], 2.2 [pc^-2]

C3 classification AC

C_N 0.52 Moderately populated
C_dens 0.44 Loose
C_C3 0.62 Intermediate quality
C_lit 0.71 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 47 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a large distance, above 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 age 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: intermediate fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.89 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.89 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2358, e_all=0.0682.

Data

🔍 Search references for SAI 47 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–	80.995	42.312	0.18	0.016	-0.35	-9.619
Almeida et al.	2025	81.001	42.313	–	–	–	–
Zhang et al.	2024	80.997	42.316	–	–	–	–
Hunt & Reffert	2024	80.997	42.316	0.188	0.06	-0.323	-11.064
Cavallo et al.	2024	80.931	42.322	0.185	–	–	–
Hunt & Reffert	2023	80.997	42.316	0.188	0.06	-0.323	-11.064
Almeida et al.	2023	81.001	42.316	–	–	–	–
Just et al.	2023	80.975	42.323	–	–	–	–
Dias et al.	2021	81.001	42.313	0.187	0.111	-0.311	–
Cantat-Gaudin et al.	2020	81.0	42.315	0.188	0.092	-0.335	–
Sánchez et al.	2020	80.992	42.314	–	0.201	-0.1	–
Cantat-Gaudin & Anders	2020	81.0	42.315	0.188	0.092	-0.335	–
Soubiran et al.	2018	81.0	42.315	–	–	–	-9.46
Bica et al.	2019	80.997	42.317	–	–	–	–
Cantat-Gaudin et al.	2018	81.0	42.315	0.188	0.092	-0.335	–
Dib et al.	2018	80.985	42.323	–	–	–	–
Sampedro et al.	2017	80.992	42.314	–	-1.91	3.38	–
Joshi et al.	2016	80.985	42.323	–	–	–	–
Kharchenko et al.	2016	80.975	42.323	–	–	–	–
Dias et al.	2014	80.992	42.314	–	-0.7	3.09	–
Kharchenko et al.	2013	80.985	42.323	–	-2.81	-2.58	–
Kharchenko et al.	2012	80.985	42.323	–	-2.81	-2.58	–
Glushkova et al.	2010	80.992	42.314	–	–	–	–
Dias et al.	2002	80.992	42.314	–	-0.7	2.42	–

💡 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–	3.965	1.79	2.21	316	-0.119	193	0.62	–
Almeida et al.	2025	3.45	2.02	–	59	–	151	–	–
Zhang et al.	2024	–	–	–	–	-0.036⁽¹⁾	–	–	–
Hunt & Reffert	2024	4.32	1.79	2.21	89	–	733⁽¹⁾	–	–
Cavallo et al.	2024	4.21	2.06	–	50	-0.040	–	–	–
Hunt & Reffert	2023	4.32	1.79	2.21	89	–	–	–	–
Almeida et al.	2023	4.07	2.11	–	40	-0.296	235⁽¹⁾	0.62	–
Just et al.	2023	–	–	–	1585	–	48	–	–
Dias et al.	2021	3.45	2.02	–	59	-0.198	–	–	–
Cantat-Gaudin et al.	2020	4.68	1.40	–	63	–	–	–	–
Kounkel et al.	2020	4.32	1.54	–	676	–	–	–	–
Cantat-Gaudin & Anders	2020	4.62	–	–	–	–	–	–	–
Soubiran et al.	2018	4.62	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.62	–	–	–	–	–	–	–
Dib et al.	2018	1.52	–	–	1585	–	–	–	–
Joshi et al.	2016	1.52	0.85	–	1585	–	–	–	–
Kharchenko et al.	2016	1.52	0.85	–	1585	–	–	–	–
Kharchenko et al.	2013	1.52	0.85	–	1585	–	–	–	–
Kharchenko et al.	2012	1.52	0.85	–	1585	–	–	–	–
Glushkova et al.	2010	3.86	1.89	–	316	–	–	–	–
Dias et al.	2002	3.86	1.89	–	316	–	–	–	–

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

Visualization

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