Ruprecht 133

0.05 UTI

0.0

C_N

0.02

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 12

Radius (P>50% members) 4.9 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 133 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 rarely studied in the literature, with no articles listed in the last 12 years.

(*): The parallax distance estimate (~8.44 kpc) differs significantly from the median photometric distance (~5.25 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.

Very distant Moderate extinction Intermediate age

Data

🔍 Search references for Ruprecht 133 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	–	268.171	-28.664	0.118	-6.034	-6.692	–
Dias et al.	2014	268.121	-28.667	–	1.08	-2.64	–
Dias et al.	2002	268.121	-28.667	–	0.98	-2.73	–

💡 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
Dias et al.	2002	5.25	1.94	–	100	–	–	–	–

Visualization

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