Ruprecht 89

(MWSC 1808; OCL 812; ESO 127 21)

0.20 UTI

0.0

C_N

0.12

C_dens

0.12

C_C3

0.39

C_lit

1.0

C_dup

N_m (P>50%) 16

Core radius and density 1.0 [pc], 0.6 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.12 Very loose
C_C3 0.12 Very low quality
C_lit 0.39 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Ruprecht 89 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~2.47 kpc) differs significantly from the median photometric distance (~0.75 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.

Close Low extinction Low mass Intermediate age

Data

🔍 Search references for Ruprecht 89 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–	157.134	-58.164	0.405	-7.066	2.571	–
Just et al.	2023	157.102	-58.131	–	–	–	–
Bica et al.	2019	157.109	-58.18	–	–	–	–
Dias et al.	2018	–	–	–	-7.32	2.48	–
Dib et al.	2018	157.107	-58.135	–	–	–	–
Sampedro et al.	2017	157.108	-58.183	–	-4.33	1.67	–
Joshi et al.	2016	157.107	-58.135	–	–	–	–
Kharchenko et al.	2016	157.102	-58.131	–	–	–	–
Dias et al.	2014	157.108	-58.183	–	-4.12	1.3	–
Kharchenko et al.	2013	157.107	-58.135	–	-3.75	5.13	–
Bukowiecki et al.	2011	157.113	-58.181	–	–	–	–
Piskunov et al.	2008	157.116	-58.136	–	–	–	–
Kharchenko et al.	2005	157.11	-58.14	–	-6.82	4.36	–
Kharchenko et al.	2003	157.06	-58.13	–	-5.86	4.04	–
Lynga	1987	157.145	-58.169	–	–	–	–

💡 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–	0.75	0.13	–	955	–	14	–	–
Just et al.	2023	–	–	–	955	–	10	–	–
Dib et al.	2018	0.75	–	–	955	–	–	–	–
Joshi et al.	2016	0.75	0.13	–	955	–	17	–	–
Kharchenko et al.	2016	0.75	0.13	–	955	–	–	–	–
Kharchenko et al.	2013	0.75	0.13	–	955	–	–	–	–
Piskunov et al.	2008	0.75	0.13	–	955	–	–	–	–
Kharchenko et al.	2005	0.75	0.13	–	955	–	–	–	–
Kharchenko et al.	2003	0.91	0.32	–	–	–	–	–	–

Visualization

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