Ruprecht 30

(MWSC 1315; OCL 687; ESO 429 15)

0.25 UTI

0.0

C_N

0.01

C_dens

0.62

C_C3

0.31

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 16

Radius (P>50% members) 4.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 30 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a very large^* distance, well below the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~12.97 kpc) differs significantly from the median photometric distance (~2.13 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.

Relatively close Moderate extinction Intermediate age

Dias et al. (2002)
Spiral arm (Carraro, G. et al. 2010, ApJ 718, 683)

Data

🔍 Search references for Ruprecht 30 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	–	115.593	-31.461	0.077	-1.045	2.122	86.866
He et al.	2023	115.636	-31.45	0.251	-2.258	3.226	–
Just et al.	2023	115.598	-31.465	–	–	–	–
Bica et al.	2019	115.611	-31.464	–	–	–	–
Kharchenko et al.	2016	115.598	-31.465	–	–	–	–
Kharchenko et al.	2013	115.603	-31.467	–	1.04	4.52	–

💡 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
He et al.	2023	3.80	1.65	–	13	–	–	–	–
Just et al.	2023	–	–	–	531	–	166	–	–
Kharchenko et al.	2016	2.13	1.48	–	531	–	–	–	–
Kharchenko et al.	2013	2.13	1.48	–	531	–	–	–	–

Visualization

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