ASCC 91

(MWSC 2702)

0.18 UTI

0.0

C_N

0.01

C_dens

0.25

C_C3

0.32

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 2.2 [pc], 0.06 [pc^-2]

C3 classification DB

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.25 Low quality
C_lit 0.32 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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ASCC 91 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.59 kpc) differs significantly from the median photometric distance (~0.86 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 Near-solar metallicity Intermediate age

Data

🔍 Search references for ASCC 91 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–	267.244	-37.391	0.218	-1.967	-2.581	5.932
Just et al.	2023	267.2	-37.371	–	–	–	–
Bica et al.	2019	267.227	-37.363	–	–	–	–
Dib et al.	2018	267.21	-37.37	–	–	–	–
Sampedro et al.	2017	267.225	-37.36	–	-1.91	-4.62	–
Joshi et al.	2016	267.21	-37.37	–	–	–	–
Kharchenko et al.	2016	267.2	-37.371	–	–	–	–
Dias et al.	2014	267.225	-37.36	–	-1.57	-4.13	–
Kharchenko et al.	2013	267.21	-37.37	–	2.0	-4.2	–
Piskunov et al.	2008	267.217	-37.358	–	–	–	–
Kharchenko et al.	2005	267.22	-37.36	–	2.29	-4.92	–
Dias et al.	2002	267.225	-37.36	–	-1.64	-4.18	-14.51

💡 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–	0.86	0.325	–	447	-0.035	236	–	–
Just et al.	2023	–	–	–	447	–	55	–	–
Dib et al.	2018	0.86	–	–	447	–	–	–	–
Joshi et al.	2016	0.86	0.33	–	447	–	417	–	–
Kharchenko et al.	2016	0.86	0.33	–	447	–	–	–	–
Kharchenko et al.	2013	0.86	0.33	–	447	-0.035	–	–	–
Piskunov et al.	2008	0.80	0.32	–	447	–	–	–	–
Kharchenko et al.	2005	0.80	0.32	–	447	–	–	–	–
Dias et al.	2002	0.80	0.32	–	447	-0.035	–	–	–

Visualization

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