Ruprecht 70

(ESO 260 07; OCL 760; MWSC 1570; MWSC 1573)

0.16 UTI

0.0

C_N

0.03

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 16

Radius (P>50% members) 6.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.25 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 70 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster (see Parameters). It is poorly studied in the literature, with no articles listed in the last 7 years.

(*): The parallax distance estimate (~5.54 kpc) differs significantly from the median photometric distance (~3.27 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.

Distant Low extinction Near-solar metallicity Old

Data

🔍 Search references for Ruprecht 70 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	–	131.974	-47.006	0.18	-4.144	4.279	–
Monteiro & Dias	2019	132.275	-46.833	–	-5.229	4.634	2.252
Bica et al.	2019	131.997	-47.04	–	–	–	–
Dias et al.	2014	132.275	-46.833	–	-1.08	3.8	–
Dias et al.	2002	132.0	-47.03	–	-3.11	3.75	–

💡 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
Monteiro & Dias	2019	2.16	1.14	–	24	0.039	–	–	–
Dias et al.	2002	4.37	0.25	–	2512	–	–	–	–

Visualization

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