ASCC 45

(MWSC 1460)

0.62 UTI

0.76

C_N

0.82

C_dens

0.5

C_C3

0.5

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 119

Radius (P>50% members) 4.7 [arcmin]

C_N 0.76 Rich
C_dens 0.82 Dense
C_C3 0.5 Intermediate quality
C_lit 0.5 Moderately studied
C_dup 1.0 Unique

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

Overview

ASCC 45 is a rich, dense object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~3.94 kpc) differs significantly from the median photometric distance (~3.00 kpc).

Note: This object shares a moderate percentage of members with 2 later reported entries. See table with shared members information.

Distant Moderate extinction Near-solar metallicity Very young

Cavallo et al. (2024): Gold sample.

Data

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	124.091	-35.66	0.254	-2.856	3.234	–
Hunt & Reffert	2024	124.145	-35.655	0.246	-2.868	3.188	–
Cavallo et al.	2024	123.913	-35.678	0.248	–	–	–
Hunt & Reffert	2023	124.145	-35.655	0.246	-2.868	3.188	–
Bica et al.	2019	123.958	-35.647	–	–	–	–
Piskunov et al.	2008	123.958	-35.647	–	–	–	–
Kharchenko et al.	2007	123.96	-35.65	–	0.2	–	43.0
Kharchenko et al.	2005	123.96	-35.65	–	-5.68	3.19	43.0
Dias et al.	2002	123.958	-35.65	–	-2.84	-1.34	43.0

💡 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
Hunt & Reffert	2024	–	–	–	–	–	205*	–	–
Cavallo et al.	2024	3.60	1.98	–	19	0.470	–	–	–
Hunt & Reffert	2023	3.56	2.06	2.28	29	–	–	–	–
Piskunov et al.	2008	3.00	1.86	–	13	–	–	–	–
Kharchenko et al.	2005	3.00	1.86	–	13	–	–	–	–
Dias et al.	2002	3.00	1.86	–	13	–	–	–	–

💡 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.
(*): indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3997	44.5	124.13	-35.65	0.26	-2.87	3.34	–	0.05
CWNU 3273	2.5	123.7	-35.68	0.26	-2.96	3.19	–	0.12

💡 Note: The % column shows the percentage of members that ASCC 45 shares with each listed object.

Visualization

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