Ruprecht 69

(MWSC 1548)

0.08 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.13

C_lit

1.0

C_dup

N_m (P>50%) 12

Core radius and density 9.9 [pc], 0.04 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.13 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Ruprecht 69 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~4.87 kpc) differs significantly from the median photometric distance (~2.01 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 Old

Data

🔍 Search references for Ruprecht 69 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–	131.199	-47.569	0.205	-3.852	5.86	50.873
Just et al.	2023	131.115	-47.567	–	–	–	–
Sampedro et al.	2017	131.15	-47.6	–	-3.12	3.47	–
Kharchenko et al.	2016	131.115	-47.567	–	–	–	–
Dias et al.	2014	131.15	-47.6	–	-1.65	2.96	–
Kharchenko et al.	2013	131.119	-47.57	–	-5.87	10.8	–
Lynga	1987	131.16	-47.595	–	–	–	–

💡 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–	2.01	1.81	–	1000	–	106	–	–
Just et al.	2023	–	–	–	1000	–	106	–	–
Kharchenko et al.	2016	2.01	1.81	–	1000	–	–	–	–
Kharchenko et al.	2013	2.01	1.81	–	1000	–	–	–	–

Visualization

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