Ruprecht 52

(MWSC 1430; OCL 705; ESO 430 17)

0.20 UTI

0.0

C_N

0.05

C_dens

0.25

C_C3

0.35

C_lit

1.0

C_dup

N₅₀ (P>50% members) 11

Stellar density (N₅₀/rad) 0.2 [N/pc²]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.25 Low quality
C_lit 0.35 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Ruprecht 52 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.74 kpc) differs significantly from the median photometric distance (~1.61 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 Low extinction Intermediate age

Data

🔍 Search references for Ruprecht 52 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	99999–	121.316	-31.958	0.267	-2.124	2.92	–
Just et al.	2023	121.3	-31.968	–	–	–	–
Bica et al.	2019	121.297	-31.967	–	–	–	–
Kharchenko et al.	2016	121.3	-31.968	–	–	–	–
Dias et al.	2014	121.287	-31.967	–	-3.01	-0.23	–
Kharchenko et al.	2013	121.305	-31.97	–	1.0	1.19	–
Dias et al.	2002	121.287	-31.967	–	-3.01	-0.23	–

💡 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]	B_frac	BSS
UCC	99999–	1.61	0.64	–	355	–	146	–	–
Just et al.	2023	–	–	–	355	–	146	–	–
Kharchenko et al.	2016	1.61	0.64	–	355	–	–	–	–
Kharchenko et al.	2013	1.61	0.64	–	355	–	–	–	–
Dias et al.	2002	2.18	2.70	–	158	–	–	–	–

Visualization

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