HSC 1198

0.19 UTI

0.26

C_N

0.04

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 2.8 [pc], 0.2 [pc^-2]

C3 classification CA

C_N 0.26 Poorly populated
C_dens 0.04 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 1198 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very large^* distance, well above the mid-plane, affected by high extinction. It is catalogued as an old cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~14.99 kpc) differs significantly from the median photometric distance (~5.52 kpc).

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very distant High extinction Old

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.21 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.21 (50th percentile).

Data

🔍 Search references for HSC 1198 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–	114.221	65.569	0.067	-0.009	-0.08	–
Hunt & Reffert	2024	114.206	65.563	0.097	0.071	-0.105	-22.792
Hunt & Reffert	2023	114.206	65.563	0.097	0.071	-0.105	-22.792

💡 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–	5.52	4.11	1.265	1420	–	567	–	–
Hunt & Reffert	2024	5.52	4.11	1.27	1421	–	567⁽¹⁾	–	–
Hunt & Reffert	2023	5.52	4.11	1.26	1419	–	–	–	–

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

Visualization

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