RSG4

(TRSG 4; UBC 1; OCSN 278)

0.74 UTI

0.4

C_N

1.0

C_dens

0.75

C_C3

0.79

C_lit

1.0

C_dup

C3 classification BA

Number of members (P>50%) 40

Radius (P>50% members) 24.8 [arcmin]

C_N 0.4 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.79 Well-studied
C_dup 1.0 Unique

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

Overview

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RSG4 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is well-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 Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for RSG4 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	–	287.748	56.787	3.081	-2.509	3.641	-23.078
Li et al.	2025	287.87	56.801	3.049	-2.579	3.649	–
Alfonso et al.	2024	288.032	56.887	3.049	-2.479	3.717	–
Zhang et al.	2024	287.696	56.523	–	–	–	–
Hunt & Reffert	2024	287.696	56.523	3.086	-2.489	3.734	-24.333
Cavallo et al.	2024	288.053	56.753	3.08	–	–	–
Hunt & Reffert	2023	287.696	56.523	3.086	-2.489	3.734	-24.333
Qin et al.	2023	287.84	56.86	3.06	-2.5	3.6	-23.18
He et al.	2022	287.959	56.89	3.084	-2.471	3.728	–
Tarricq et al.	2022	287.68	56.955	3.089	-2.471	3.628	–
Cantat-Gaudin et al.	2020	287.87	56.801	3.049	-2.579	3.649	–
Cantat-Gaudin & Anders	2020	287.87	56.801	3.049	-2.579	3.649	–
Bica et al.	2019	287.824	56.624	–	–	–	–
Castro-Ginard et al.	2018	287.998	56.833	3.051	-2.493	3.694	-21.46
Roser et al.	2016	288.54	56.97	–	-0.27	5.71	–

💡 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
Li et al.	2025	0.31	0.02	–	102	0.049	–	–	–
Alfonso et al.	2024	0.33	0.35	–	89	0.009	–	–	–
Zhang et al.	2024	–	–	–	–	0.155*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	108*	–	–
Cavallo et al.	2024	0.33	0.39	–	87	0.260	–	–	–
Hunt & Reffert	2023	0.32	0.06	0.41	112	–	–	–	–
Qin et al.	2023	0.32	0.12	–	89	–	–	–	–
He et al.	2022	–	0.35	–	79	–	–	–	–
Tarricq et al.	2022	0.32	–	–	71	–	–	–	–
Cantat-Gaudin et al.	2020	0.33	0.35	–	69	–	–	–	–
Cantat-Gaudin & Anders	2020	0.32	–	–	–	–	–	–	–
Roser et al.	2016	0.36	0.22*	–	355*	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14676	100.0	287.77	56.73	3.08	-2.5	3.63	-23.34	0.12

💡 Note: The % column shows the percentage of members that RSG4 shares with each listed object.

Visualization

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