RSG9y

(RSG9o; TRSG 9; Teutsch J0450.9+5209)

0.59 UTI

0.47

C_N

1.0

C_dens

0.75

C_C3

0.38

C_lit

1.0

C_dup

C3 classification BA

Number of members (P>50%) 47

Radius (P>50% members) 23.3 [arcmin]

C_N 0.47 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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RSG9y is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

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

Very close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for RSG9y 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	–	72.608	52.295	3.309	9.293	-16.972	13.354
Wei et al.	2025	72.621	52.421	3.333	9.163	-17.074	–
Zhang et al.	2024	72.57	52.264	–	–	–	–
Cavallo et al.	2024	72.974	52.194	3.325	–	–	–
Hunt & Reffert	2023	72.57	52.264	3.31	9.126	-16.951	13.829
Bica et al.	2019	72.722	52.156	–	–	–	–
Roser et al.	2016	72.75	52.23	–	8.39	-15.23	–

💡 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
Wei et al.	2025	0.50	1.41	–	288	0.250	118	0.31	–
Zhang et al.	2024	–	–	–	–	0.042*	–	–	–
Cavallo et al.	2024	0.31	1.26	–	186	0.260	–	–	–
Hunt & Reffert	2023	0.29	0.78	1.92	283	–	–	–	–
Roser et al.	2016	0.22	0.16*	–	32*	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 1191	95.7	72.51	52.29	3.31	9.32	-16.97	13.24	0.05

💡 Note: The % column shows the percentage of members that RSG9y shares with each listed object.

Visualization

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