UBC 553

0.36 UTI

0.5

C_N

0.15

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 51

Core radius and density 2.8 [pc], 0.7 [pc^-2]

C3 classification AA

C_N 0.5 Moderately populated
C_dens 0.15 Very loose
C_C3 1.0 Very high 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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UBC 553 is a moderately populated, very loose object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a very young cluster (see Parameters). It is rarely studied in the literature.

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

Relatively close Moderate extinction Very young

Data

🔍 Search references for UBC 553 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–	253.505	-41.263	0.596	-0.536	-1.804	-17.476
Celli et al.	2024	253.51	-41.271	–	–	–	–
Cantat-Gaudin et al.	2020	253.51	-41.271	0.581	-0.551	-1.811	–
Castro-Ginard et al.	2020	253.496	-41.27	0.579	-0.542	-1.818	–

💡 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–	1.465	1.63	–	13	–	256	–	–
Celli et al.	2024	–	–	–	13	–	256	–	–
Cantat-Gaudin et al.	2020	1.58	1.36	–	13	–	–	–	–
Kounkel et al.	2020	1.35	1.90	–	14	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2848	31.4	253.54	-41.16	0.61	-0.57	-1.71	-15.7	0.07

💡 Note: The % column shows the percentage of members that UBC 553 shares with each listed object.

Visualization

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