Ruprecht 15

(MWSC 1175)

0.23 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.38

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 16

Radius (P>50% members) 10.9 [arcmin]

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

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

Overview

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Ruprecht 15 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, 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 (~6.33 kpc) differs significantly from the median photometric distance (~2.89 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

Data

🔍 Search references for Ruprecht 15 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	–	109.923	-19.586	0.158	-0.692	1.665	96.739
Just et al.	2023	109.876	-19.628	–	–	–	–
Loktin & Popova	2017	109.89	-19.629	–	1.039	6.567	–
Kharchenko et al.	2016	109.876	-19.628	–	–	–	–
Dias et al.	2014	109.888	-19.633	–	-0.94	1.72	–
Kharchenko et al.	2013	109.882	-19.63	–	-0.21	6.12	–
Dias et al.	2002	109.888	-19.633	–	-0.21	6.12	–

💡 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
Just et al.	2023	–	–	–	562	–	289	–	–
Loktin & Popova	2017	3.43	0.84	–	1000	–	–	–	–
Kharchenko et al.	2016	2.36	1.29	–	562	–	–	–	–
Kharchenko et al.	2013	2.36	1.29	–	562	–	–	–	–
Dias et al.	2002	3.42	1.15	–	501	–	–	–	–

Visualization

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