Ruprecht 86

(MWSC 1747; OCL 801)

0.24 UTI

0.32

C_N

0.13

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 32

Radius (P>50% members) 5.8 [arcmin]

C_N 0.32 Poorly populated
C_dens 0.13 Very loose
C_C3 0.25 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

Ruprecht 86 is a poorly populated, 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 a very massive, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.14 kpc) differs significantly from the median photometric distance (~7.17 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 High extinction Very massive Intermediate age

Data

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	150.362	-59.495	0.242	-5.563	3.899	33.834
Just et al.	2023	150.431	-59.451	–	–	–	–
Bica et al.	2019	150.399	-59.488	–	–	–	–
Kharchenko et al.	2016	150.431	-59.451	–	–	–	–
Kharchenko et al.	2013	150.435	-59.455	–	-11.74	6.6	–

💡 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	–	–	–	631	–	5070	–	–
Kharchenko et al.	2016	7.17	3.10	–	631	–	–	–	–
Kharchenko et al.	2013	7.17	3.10	–	631	–	–	–	–

💡 Note: The parameters are sometimes transformed from their original values to match the format of the columns shown here, see FAQ. The columns DAv, Bfr, BSS correspond to differential extinction, binary fraction, and blue stragglers, respectively. BSS values can be listed as fractions or integers.

Visualization

💡 Note: How are the galactocentric plots generated? See FAQ.