Sh2-287C

(MWSC 1052)

0.12 UTI

0.0

C_N

0.21

C_dens

0.25

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 1.1 [pc], 1.0 [pc^-2]

C3 classification DB

C_N 0.0 Sparse
C_dens 0.21 Very loose
C_C3 0.25 Low quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Sh2-287C is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by high extinction. It is catalogued as a low-mass, very young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~2.22 kpc) differs significantly from the median photometric distance (~3.34 kpc).

Note: This object shares a significant percentage of members with 4 later reported entries. See table with shared members information.

⚠️ 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.

Distant High extinction Low mass Very young

Bica et al. (2003)
Classified as infrared cluster (IRC).

Data

🔍 Search references for Sh2-287C 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–	104.85	-4.703	0.45	-1.608	0.763	48.19
Just et al.	2023	104.896	-4.665	–	–	–	–
Kharchenko et al.	2016	104.896	-4.665	–	–	–	–
Kharchenko et al.	2013	104.902	-4.667	–	-0.01	1.96	–
Bica et al.	2003	104.899	-4.673	–	–	–	–

💡 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–	3.34	3.61	–	8	–	41	–	–
Just et al.	2023	–	–	–	8	–	41	–	–
Kharchenko et al.	2016	3.34	3.61	–	8	–	–	–	–
Kharchenko et al.	2013	3.34	3.61	–	8	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 1723	52.0	104.85	-4.74	0.43	-1.49	0.69	62.26	0.04
S 287 C	44.0	104.88	-4.74	0.44	-1.46	0.6	62.26	0.06
HSC 1721	20.0	104.97	-4.52	0.45	-1.89	0.6	–	0.08
BDSB 90	8.0	104.89	-4.81	0.44	-1.49	0.61	62.26	0.18

💡 Note: The % column shows the percentage of members that Sh2-287C shares with each listed object.

Visualization

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