Chereul 1

0.13 UTI

0.0

C_N

0.51

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 1.2 [pc], 2.5 [pc^-2]

C3 classification CD

C_N 0.0 Sparse
C_dens 0.51 Moderately dense
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Chereul 1 is a sparse, moderately dense object of very low C3 quality. Its parallax locates it at a close^* distance, above the mid-plane. It is catalogued as a cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 24 years.

(*): The parallax distance estimate (~0.56 kpc) differs significantly from the median photometric distance (~0.10 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.

Very close

Dias et al. (2016)
Moving group (Chereul, E. et al. 1999, A&AS 135, 5); cat V3.5 (Jan 2016)

Data

🔍 Search references for Chereul 1 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–	217.325	55.328	1.774	-16.283	-2.465	9.78
Dias et al.	2002	217.267	55.392	–	–	–	–

💡 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–	0.1	–	–	–	–	–	–	–
Dias et al.	2002	0.10	–	–	–	–	–	–	–

Visualization

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