Collinder 91

(MWSC 844; OCL 519)

0.19 UTI

0.0

C_N

0.04

C_dens

0.12

C_C3

0.4

C_lit

1.0

C_dup

N₅₀ (P>50% members) 15

Stellar density (N₅₀/rad) 0.2 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.12 Very low quality
C_lit 0.4 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Collinder 91 is a sparse, very loose object of very 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 poorly studied in the literature.

(*): The parallax distance estimate (~5.07 kpc) differs significantly from the median photometric distance (~1.47 kpc).

Relatively close Moderate extinction Intermediate age

Data

🔍 Search references for Collinder 91 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	95.492	2.371	0.197	-0.408	0.289	30.938
Just et al.	2023	95.453	2.375	–	–	–	–
Bica et al.	2019	95.385	2.317	–	–	–	–
Loktin & Popova	2017	95.46	2.368	–	-1.99	-3.4	-11.8
Kharchenko et al.	2016	95.453	2.375	–	–	–	–
Dias et al.	2014	95.425	2.367	–	-1.99	-3.4	-11.84
Kharchenko et al.	2013	95.46	2.374	–	0.67	-1.22	-11.8
Dias et al.	2002	95.425	2.367	–	-1.99	-3.4	-11.84

💡 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–	1.47	1.62	–	437	–	284	–	–
Just et al.	2023	–	–	–	437	–	284	–	–
Loktin & Popova	2017	2.79	1.28	–	1698	–	–	–	–
Kharchenko et al.	2016	1.47	1.62	–	437	–	–	–	–
Kharchenko et al.	2013	1.47	1.62	–	437	–	–	–	–
Dias et al.	2002	1.47	1.62	–	437	–	–	–	–

Visualization

ℹ️