Alessi 34

(ASCC 44; MWSC 1414)

0.89 UTI

0.84

C_N

1.0

C_dens

1.0

C_C3

0.81

C_lit

1.0

C_dup

N₅₀ (P>50% members) 347

Stellar density (N₅₀/rad) 12.0 [N/pc²]

C3 classification AA

C_N 0.84 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.81 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Alessi 34 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close^* distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~0.48 kpc) differs significantly from the median photometric distance (~0.91 kpc).

Note: This object shares a very small percentage of members with a later reported entry. See table with shared members information.

Close Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Alessi 34 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	120.099	-50.644	2.073	-5.194	5.722	11.158
Hunt & Reffert	2024	120.062	-50.655	2.045	-5.01	5.743	12.33
Cavallo et al.	2024	119.559	-50.713	2.043	–	–	–
Hunt & Reffert	2023	120.062	-50.655	2.045	-5.01	5.743	12.33
Just et al.	2023	120.476	-50.577	–	–	–	–
Bica et al.	2019	120.453	-50.554	–	–	–	–
Loktin & Popova	2017	120.45	-50.558	–	-3.767	7.52	17.8
Kharchenko et al.	2016	120.476	-50.577	–	–	–	–
Dias et al.	2014	120.45	-50.558	–	-4.12	4.73	–
Kharchenko et al.	2013	120.48	-50.58	–	-6.01	7.4	17.8
Gozha et al.	2012	120.45	-50.558	–	–	–	–
Piskunov et al.	2008	120.412	-50.569	–	–	–	–
Kharchenko et al.	2007	120.42	-50.57	–	0.4	–	17.8
Piskunov et al.	2007	120.412	-50.569	–	–	–	–
Kharchenko et al.	2005	120.42	-50.57	–	-5.62	6.25	17.8
Dias et al.	2002	120.45	-50.558	–	-5.62	6.25	17.8

💡 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–	0.91	0.56	1.09	78	0.090	908	–	–
Hunt & Reffert	2024	–	–	–	–	–	350⁽¹⁾	–	–
Cavallo et al.	2024	0.52	0.92	–	13	0.090	–	–	–
Hunt & Reffert	2023	0.47	0.56	1.09	21	–	–	–	–
Just et al.	2023	–	–	–	79	–	28	–	–
Loktin & Popova	2017	0.72	0.82	–	204	–	–	–	–
Kharchenko et al.	2016	0.55	0.84	–	79	–	–	–	–
Kharchenko et al.	2013	0.55	0.84	–	79	–	–	–	–
Gozha et al.	2012	1.10	–	–	78	–	2344	–	–
Piskunov et al.	2008	1.10	0.56	–	78	–	2844⁽¹⁾	–	–
Piskunov et al.	2007	1.10	0.56	–	78	–	908	–	–
Kharchenko et al.	2005	1.10	0.56	–	78	–	–	–	–
Dias et al.	2002	1.10	0.56	–	78	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 480	7.2	120.09	-50.64	2.12	-5.34	5.71	7.78	0.0

💡 Note: The % column shows the percentage of members that Alessi 34 shares with each listed object.

Visualization

ℹ️

1 2