HSC 290

0.27 UTI

0.66

C_N

0.04

C_dens

0.62

C_C3

0.03

C_lit

0.98

C_dup

N_m (P>50%) 83

Core radius and density 6.0 [pc], 0.2 [pc^-2]

C3 classification AC

C_N 0.66 Moderately populated
C_dens 0.04 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 0.98 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

HSC 290 is a moderately populated, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by very high extinction. It is catalogued as an extremely massive, near-solar metallicity, old cluster (see Parameters). It was recently reported in the literature.

Note: This is a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.

Very distant Very high extinction Extremely massive Near-solar metallicity Old

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.04 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.04 (50th percentile).

Data

🔍 Search references for HSC 290 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	278.975	-2.338	0.144	-2.538	-5.41	40.949
Hunt & Reffert	2024	278.966	-2.335	0.143	-2.586	-5.448	45.177
Cavallo et al.	2024	278.957	-2.37	0.147	–	–	–
Hunt & Reffert	2023	278.966	-2.335	0.143	-2.586	-5.448	45.177

💡 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–	5.23	5.2	2.99	1972	-0.100	10123	–	–
Hunt & Reffert	2024	5.23	5.20	2.99	1971	–	10123⁽¹⁾	–	–
Cavallo et al.	2024	5.40	3.89	–	2570	-0.100	–	–	–
Hunt & Reffert	2023	5.23	5.20	2.99	1972	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Ryu 905	2.4	278.97	-2.53	0.16	-2.89	-5.53	-6.43	0.09

💡 Note: The % column shows the percentage of members that HSC 290 shares with each listed object.

Visualization

ℹ️

1 2