ASCC 109

(MWSC 3202)

0.20 UTI

0.0

C_N

0.0

C_dens

0.38

C_C3

0.32

C_lit

1.0

C_dup

N_m (P>50%) 13

Core radius and density 29 [pc], 0.0 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.0 Very loose
C_C3 0.38 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 109 is a sparse, very loose object of low C3 quality. Its parallax locates it at a very large^* distance, well above the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~18.18 kpc) differs significantly from the median photometric distance (~0.48 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 close Low extinction Intermediate age

Data

🔍 Search references for ASCC 109 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–	298.505	34.587	0.055	-2.297	-3.869	-84.398
Just et al.	2023	298.517	34.542	–	–	–	–
Bica et al.	2019	298.502	34.58	–	–	–	–
Dib et al.	2018	298.522	34.545	–	–	–	–
Sampedro et al.	2017	298.5	34.58	–	-2.6	-4.08	–
Joshi et al.	2016	298.522	34.545	–	–	–	–
Kharchenko et al.	2016	298.517	34.542	–	–	–	–
Dias et al.	2014	298.5	34.58	–	-2.52	-4.59	–
Kharchenko et al.	2013	298.522	34.545	–	-1.0	-2.5	–
Piskunov et al.	2008	298.496	34.572	–	–	–	–
Kharchenko et al.	2005	298.5	34.58	–	0.47	-2.23	–
Dias et al.	2002	298.5	34.58	–	0.47	-2.23	–

💡 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–	0.48	0.0	–	133	–	136	–	–
Just et al.	2023	–	–	–	133	–	22	–	–
Dib et al.	2018	0.48	–	–	133	–	–	–	–
Joshi et al.	2016	0.48	0.00	–	133	–	251	–	–
Kharchenko et al.	2016	0.48	0.00	–	133	–	–	–	–
Kharchenko et al.	2013	0.48	0.00	–	133	–	–	–	–
Piskunov et al.	2008	0.45	0.00	–	204	–	–	–	–
Kharchenko et al.	2005	0.45	0.00	–	204	–	–	–	–
Dias et al.	2002	0.45	0.00	–	204	–	–	–	–

Visualization

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