Ruprecht 142

(MWSC 2943)

0.17 UTI

0.0

C_N

0.03

C_dens

0.38

C_C3

0.23

C_lit

1.0

C_dup

N_m (P>50%) 12

Core radius and density 5.9 [pc], 0.1 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.38 Low quality
C_lit 0.23 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 142 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by high 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 8 years.

(*): The parallax distance estimate (~3.21 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 High extinction Intermediate age

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Data

🔍 Search references for Ruprecht 142 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–	278.035	-12.239	0.312	-3.265	-5.009	22.162
Dias et al.	2018	–	–	–	-0.22	-2.19	–
Sampedro et al.	2017	278.046	-12.23	–	-0.24	-1.29	–
Kharchenko et al.	2016	278.047	-12.217	–	–	–	–
Tadross	2014	278.046	-12.23	–	–	–	–
Dias et al.	2014	278.046	-12.23	–	-0.81	-1.08	–
Kharchenko et al.	2013	278.055	-12.215	–	-2.88	-5.67	–
Morales et al.	2013	278.046	-12.23	–	–	–	–
Dias et al.	2002	278.046	-12.23	–	-0.81	-1.08	–
Lynga	1987	278.025	-12.243	–	–	–	–

💡 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–	1.74	3.01	–	398	–	–	–	–
Kharchenko et al.	2016	1.80	3.15	–	339	–	–	–	–
Tadross	2014	1.74	2.87	–	400	–	–	–	–
Kharchenko et al.	2013	1.80	3.15	–	339	–	–	–	–
Morales et al.	2013	1.74	–	–	400	–	–	–	–
Dias et al.	2002	1.74	2.87	–	398	–	–	–	–

Visualization

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