UPK 307

0.37 UTI

0.5

C_N

0.25

C_dens

0.5

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 51

Stellar density (N₅₀/rad) 1.3 [N/pc²]

C3 classification BB

C_N 0.5 Moderately populated
C_dens 0.25 Loose
C_C3 0.5 Intermediate quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

UPK 307 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is poorly studied in the literature.

Close Moderate extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UPK 307 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	55.118	54.867	1.092	-2.133	-1.832	-9.468
Zhang et al.	2024	54.493	55.18	–	–	–	–
Hunt & Reffert	2024	54.493	55.18	1.095	-2.175	-1.833	-14.605
Cavallo et al.	2024	55.185	54.864	1.099	–	–	–
Hunt & Reffert	2023	54.493	55.18	1.095	-2.175	-1.833	-14.605
Sim et al.	2019	55.114	54.847	–	-2.13	-1.82	–

💡 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–	0.89	2.32	1.9	18	-0.151	163	–	–
Zhang et al.	2024	–	–	–	–	-0.212⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	163⁽¹⁾	–	–
Cavallo et al.	2024	0.93	2.55	–	13	-0.090	–	–	–
Hunt & Reffert	2023	0.87	2.09	1.90	22	–	–	–	–
Sim et al.	2019	0.89	–	–	18	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

ℹ️

1 2