Ruprecht 103

(OCL 876; ESO 130 11; MWSC 2012)

0.10 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 12

Core radius and density 2.3 [pc], 0.06 [pc^-2]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.38 Low quality
C_lit 0.06 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 103 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 7 years.

(*): The parallax distance estimate (~5.01 kpc) differs significantly from the median photometric distance (~1.30 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

Dias et al. (2002)
Asterism (Piatti, A. E.; Clariá, J. J. 2001, A&A 379, 453); cat V3.5 (Jan 2016)

Data

🔍 Search references for Ruprecht 103 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–	184.072	-58.469	0.2	-6.185	0.766	6.04
Bica et al.	2019	183.974	-58.42	–	–	–	–
Dib et al.	2018	184.23	-58.417	–	–	–	–
Joshi et al.	2016	184.23	-58.417	–	–	–	–
Lynga	1987	183.976	-58.41	–	–	–	–

💡 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–	1.3	1.31	–	1288	–	–	–	–
Dib et al.	2018	1.30	–	–	1288	–	–	–	–
Joshi et al.	2016	1.30	1.31	–	1288	–	–	–	–

Visualization

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