Ruprecht 72

(MWSC 1591; OCL 737; ESO 371 22)

0.16 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.19

C_lit

1.0

C_dup

N_m (P>50%) 16

Core radius and density 6.5 [pc], 0.07 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.38 Low quality
C_lit 0.19 Rarely studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 72 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~3.91 kpc) differs significantly from the median photometric distance (~2.42 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 Old

Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010).

Dias et al. (2002)
Field fluctuation (Vázquez, R. A. et al. 2010, A&A 511, 38); cat V3.5 (Jan 2016)

Data

🔍 Search references for Ruprecht 72 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–	132.981	-37.639	0.256	-4.188	3.102	–
Just et al.	2023	133.007	-37.607	–	–	–	–
Bica et al.	2019	133.011	-37.61	–	–	–	–
Kharchenko et al.	2016	133.007	-37.607	–	–	–	–
Kharchenko et al.	2013	133.012	-37.61	–	-3.89	3.89	–
Bukowiecki et al.	2011	133.0	-37.562	–	–	–	–
van den Bergh	2006	133.025	-37.6	–	–	–	–
Lynga	1987	133.038	-37.605	–	–	–	–

💡 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–	2.415	0.5	–	2512	–	238	–	–
Just et al.	2023	–	–	–	2512	–	101	–	–
Kharchenko et al.	2016	2.24	0.46	–	2512	–	–	–	–
Kharchenko et al.	2013	2.24	0.46	–	2512	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	376	–	–
Bukowiecki et al.	2011	2.59⁽¹⁾	0.54	–	1413	–	–	–	–
van den Bergh	2006	3.02	0.76	–	1259	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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