S 242

(Sh2 242; MWSC 685)

0.03 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 15

Radius (P>50% members) 11.1 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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S 242 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a low-mass, very young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~3.68 kpc) differs significantly from the median photometric distance (~2.19 kpc).

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Low mass Very young

Data

🔍 Search references for S 242 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	–	88.012	26.954	0.272	-0.325	-1.329	–
Just et al.	2023	88.044	26.959	–	–	–	–
Kharchenko et al.	2016	88.044	26.959	–	–	–	–
Kharchenko et al.	2013	88.053	26.958	–	-0.23	-4.74	9.8

💡 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	–	–	–	3	–	39	–	–
Kharchenko et al.	2016	2.19	2.90	–	3	–	–	–	–
Kharchenko et al.	2013	2.19	2.90	–	3	–	–	–	–

Visualization

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