Ruprecht 146

(MWSC 3012; OCL 39; ESO 592 04)

0.13 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 11

Radius (P>50% members) 7.7 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

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Ruprecht 146 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~5.54 kpc) differs significantly from the median photometric distance (~1.74 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)

Data

🔍 Search references for Ruprecht 146 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	–	283.073	-21.09	0.181	-1.839	-3.9	-72.103
Just et al.	2023	283.109	-21.087	–	–	–	–
Bica et al.	2019	283.12	-21.083	–	–	–	–
Kharchenko et al.	2016	283.109	-21.087	–	–	–	–
Kharchenko et al.	2013	283.117	-21.085	–	1.97	0.26	–

💡 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	–	–	–	1259	–	297	–	–
Kharchenko et al.	2016	1.74	1.48	–	1259	–	–	–	–
Kharchenko et al.	2013	1.74	1.48	–	1259	–	–	–	–

Visualization

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