King 9

(MWSC 3604; OCL 227)

0.90 UTI

0.88

C_N

1.0

C_dens

0.62

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 456

Radius (P>50% members) 1.4 [arcmin]

C_N 0.88 Rich
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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King 9 is a rich, very dense object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.

Very distant Moderate extinction Massive Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for King 9 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	–	333.876	54.408	0.133	-2.298	-1.013	-60.59
Hu & Soubiran	2025	333.885	54.404	–	–	–	–
Hunt & Reffert	2024	333.879	54.408	0.145	-2.288	-1.02	-64.84
Cavallo et al.	2024	333.885	54.404	0.135	–	–	–
Hunt & Reffert	2023	333.879	54.408	0.145	-2.288	-1.02	-64.84
Just et al.	2023	333.88	54.398	–	–	–	–
Cantat-Gaudin et al.	2020	333.877	54.405	0.129	-2.28	-0.972	–
Sánchez et al.	2020	333.875	54.4	–	-2.297	-0.881	–
Cantat-Gaudin & Anders	2020	333.877	54.405	0.129	-2.28	-0.972	–
Soubiran et al.	2018	333.877	54.405	–	–	–	-66.59
Bica et al.	2019	333.868	54.41	–	–	–	–
Cantat-Gaudin et al.	2018	333.877	54.405	0.129	-2.28	-0.972	–
Loktin & Popova	2017	333.87	54.4	–	-1.408	-0.943	–
Kharchenko et al.	2016	333.88	54.398	–	–	–	–
Dias et al.	2014	333.875	54.4	–	-2.36	-1.41	–
Kharchenko et al.	2013	333.885	54.402	–	0.22	0.55	–
Kharchenko et al.	2012	333.885	54.402	–	0.22	0.55	–
Dias et al.	2002	333.875	54.4	–	-2.36	-1.41	–

💡 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
Hu & Soubiran	2025	–	–	–	–	-0.200*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1225*	–	–
Cavallo et al.	2024	4.90	1.57	–	5888	-0.560	–	–	–
Hunt & Reffert	2023	6.57	1.80	1.79	1222	–	–	–	–
Just et al.	2023	–	–	–	3162	–	2344	–	–
Cantat-Gaudin et al.	2020	5.70	1.33	–	3090	–	–	–	–
Cantat-Gaudin & Anders	2020	6.31	–	–	–	–	–	–	–
Soubiran et al.	2018	6.31	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	6.31	–	–	–	–	–	–	–
Loktin & Popova	2017	3.00	1.13	–	692	–	–	–	–
Kharchenko et al.	2016	8.00	1.15	–	3162	–	–	–	–
Kharchenko et al.	2013	8.00	1.15	–	3162	–	–	–	–
Kharchenko et al.	2012	8.00	1.15	–	3162	–	–	–	–
Dias et al.	2002	7.90	1.15	–	3162	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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