RSG7

(OCSN 257)

0.37 UTI

0.77

C_N

1.0

C_dens

1.0

C_C3

0.65

C_lit

0.45

C_dup

C3 classification AA

Number of members (P>50%) 158

Radius (P>50% members) 30.1 [arcmin]

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.65 Moderately studied
C_dup 0.45 Possibly duplicate

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

Overview

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RSG7 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is moderately studied in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Very close Low extinction Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit. Silver sample.

Data

🔍 Search references for RSG7 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	–	343.994	59.448	2.35	4.944	-1.812	-12.62
Li et al.	2025	344.19	59.363	2.337	4.927	-1.865	–
Almeida et al.	2025	344.357	59.397	–	–	–	–
Alfonso et al.	2024	-14.852	59.361	2.105	5.468	-1.667	–
Qin et al.	2023	343.92	59.87	2.37	4.79	-2.19	-9.82
He et al.	2022	342.217	59.573	2.303	5.129	-1.681	–
Dias et al.	2021	344.357	59.397	2.316	5.045	-1.692	-10.918
Cantat-Gaudin et al.	2020	344.19	59.363	2.337	4.927	-1.865	–
Cantat-Gaudin & Anders	2020	344.19	59.363	2.337	4.927	-1.865	–
Soubiran et al.	2018	344.19	59.363	–	–	–	-11.51
Cantat-Gaudin et al.	2018	344.19	59.363	2.337	4.927	-1.865	–
Roser et al.	2016	343.98	58.66	–	5.74	-0.42	–

💡 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	0.42	0.65	–	27	-0.048	–	–	–
Almeida et al.	2025	0.42	0.70	–	84	–	238	–	–
Alfonso et al.	2024	0.42	0.57	–	38	0.101	–	–	–
Qin et al.	2023	0.58	0.78	–	79	–	–	–	–
He et al.	2022	–	1.00	–	35	–	–	–	–
Dias et al.	2021	0.42	0.70	–	84	0.102	–	–	–
Cantat-Gaudin et al.	2020	0.42	0.57	–	39	–	–	–	–
Cantat-Gaudin & Anders	2020	0.42	–	–	–	–	–	–	–
Soubiran et al.	2018	0.42	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	0.42	–	–	–	–	–	–	–
Roser et al.	2016	0.46	0.19*	–	200*	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
NGC 7429	55.1	344.03	59.88	2.36	4.81	-2.19	-12.68	0.82
CWWDL 14637	31.6	343.95	59.81	2.37	4.78	-2.24	-12.62	0.0
CWWDL 14638	26.6	344.12	59.28	2.29	5.37	-0.9	-14.39	0.1
CWWDL 14622	4.4	345.68	58.22	2.25	5.43	-1.31	-8.93	0.35

💡 Note: The % column shows the percentage of members that RSG7 shares with each listed object.

Visualization

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