SAI 21

(MWSC 215)

0.51 UTI

0.29

C_N

1.0

C_dens

0.38

C_C3

0.44

C_lit

1.0

C_dup

C3 classification CB

Number of members (P>50%) 29

Radius (P>50% members) 1.1 [arcmin]

C_N 0.29 Poorly populated
C_dens 1.0 Very dense
C_C3 0.38 Low quality
C_lit 0.44 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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SAI 21 is a poorly populated, very dense object of low C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a low-mass, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.15 kpc) differs significantly from the median photometric distance (~1.90 kpc).

Relatively close Moderate extinction Low mass Intermediate age

Data

🔍 Search references for SAI 21 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	–	38.672	62.582	0.318	-0.082	-0.39	-86.122
Just et al.	2023	38.694	62.586	–	–	–	–
Kharchenko et al.	2016	38.694	62.586	–	–	–	–
Dias et al.	2014	38.688	62.573	–	-2.95	-1.76	–
Kharchenko et al.	2013	38.707	62.588	–	-1.25	-2.1	–
Kharchenko et al.	2012	38.707	62.588	–	-1.25	-2.1	–
Glushkova et al.	2010	38.689	62.573	–	–	–	–
Dias et al.	2002	38.688	62.573	–	-2.95	-1.76	–

💡 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]	Bfr	BSS
Just et al.	2023	–	–	–	891	–	48	–	–
Kharchenko et al.	2016	1.90	2.02	–	891	–	–	–	–
Kharchenko et al.	2013	1.90	2.02	–	891	–	–	–	–
Kharchenko et al.	2012	1.90	2.02	–	891	–	–	–	–
Glushkova et al.	2010	1.86	1.80	–	316	–	–	–	–
Dias et al.	2002	1.86	1.80	–	316	–	–	–	–

Visualization

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