UPK 655

0.51 UTI

0.54

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 58

Radius (P>50% members) 18.5 [arcmin]

C_N 0.54 Moderately populated
C_dens 1.0 Very dense
C_C3 1.0 Very 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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UPK 655 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a very young cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with 3 later reported entries. See table with shared members information.

Very close Low extinction Very young

Data

🔍 Search references for UPK 655 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	–	285.347	-36.928	6.49	4.425	-27.187	-5.138
He et al.	2022	281.927	-37.178	6.622	2.261	-27.493	–
Sim et al.	2019	285.29	-36.94	–	4.48	-27.2	–

💡 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	–	0.05	–	8	–	–	–	–
Sim et al.	2019	0.15	–	–	13	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2986	100.0	283.03	-36.86	6.6	3.1	-27.52	-2.65	0.07
OCSN 324	100.0	285.26	-36.93	6.49	4.34	-27.26	-2.82	0.27
OCSN 322	75.9	281.4	-36.61	6.65	1.58	-27.55	-3.06	0.49

💡 Note: The % column shows the percentage of members that UPK 655 shares with each listed object.

Visualization

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