GroupX a

0.28 UTI

0.51

C_N

0.16

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BA

Number of members (P>50%) 52

Radius (P>50% members) 296.3 [arcmin]

C_N 0.51 Moderately populated
C_dens 0.16 Very loose
C_C3 0.75 High 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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GroupX a is a moderately populated, very loose object of high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Low extinction Intermediate age

Data

🔍 Search references for GroupX a 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	–	209.44	52.335	10.66	-18.073	-4.563	-4.779
He et al.	2022	209.766	52.627	10.652	-18.068	-4.668	–

💡 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
He et al.	2022	–	0.25	–	178	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 759	100.0	217.14	56.05	10.09	-16.24	-3.03	-6.11	0.28

💡 Note: The % column shows the percentage of members that GroupX a shares with each listed object.

Visualization

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