Saurer 2

(MWSC 1489; FSR 1386)

0.72 UTI

0.8

C_N

1.0

C_dens

0.75

C_C3

0.52

C_lit

1.0

C_dup

N_m (P>50%) 224

Core radius and density 1.9 [pc], 6.8 [pc^-2]

C3 classification AB

C_N 0.8 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.52 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Saurer 2 is a rich, very dense object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Very distant High extinction Massive Near-solar metallicity Old Contains BSS

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.26 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.26 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.181, e_all=0.1579.

Data

🔍 Search references for Saurer 2 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	126.359	-39.632	0.141	-2.973	4.605	87.709
Hu & Soubiran	2025	126.351	-39.642	–	–	–	–
Hunt & Reffert	2024	126.363	-39.635	0.118	-2.99	4.58	87.721
Cavallo et al.	2024	126.351	-39.642	0.122	–	–	–
Hunt & Reffert	2023	126.363	-39.635	0.118	-2.99	4.58	87.721
Just et al.	2023	126.354	-39.637	–	–	–	–
Jadhav & Subramaniam	2021	126.366	-39.64	–	–	–	–
Cantat-Gaudin et al.	2020	126.366	-39.64	0.109	-2.969	4.567	–
Cantat-Gaudin & Anders	2020	126.366	-39.64	0.109	-2.969	4.567	–
Soubiran et al.	2018	126.366	-39.64	–	–	–	84.59
Bica et al.	2019	126.357	-39.621	–	–	–	–
Cantat-Gaudin et al.	2018	126.366	-39.64	0.109	-2.969	4.567	–
Sampedro et al.	2017	126.367	-39.634	–	0.03	0.26	–
Kharchenko et al.	2016	126.354	-39.637	–	–	–	–
Kharchenko et al.	2013	126.36	-39.64	–	-6.62	8.13	–
Bukowiecki et al.	2011	126.358	-39.631	–	–	–	–
van den Bergh	2006	126.375	-39.633	–	–	–	–
Dias et al.	2002	126.367	-39.634	–	-1.01	3.64	–

💡 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–	6.345	3.72	2.71	1778	-0.305	2393	–	3
Hu & Soubiran	2025	–	–	–	–	-0.450⁽⁵⁾	–	–	–
Hunt & Reffert	2024	6.26	4.12	2.71	394	–	2393⁽¹⁾	–	–
Cavallo et al.	2024	6.58	3.69	–	1950	-0.160	–	–	–
Hunt & Reffert	2023	6.26	4.12	2.71	394	–	–	–	–
Just et al.	2023	–	–	–	1778	–	731	–	–
Jadhav & Subramaniam	2021	6.43	3.72	–	1622	–	5308	–	3⁽¹⁾
Cantat-Gaudin et al.	2020	6.43	3.72	–	1622	–	–	–	–
Kounkel et al.	2020	6.02	3.52	–	977	–	–	–	–
Cantat-Gaudin & Anders	2020	7.26	–	–	–	–	–	–	–
Soubiran et al.	2018	7.26	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	7.26	–	–	–	–	–	–	–
Kharchenko et al.	2016	6.02	3.94	–	1778	–	–	–	–
Kharchenko et al.	2013	6.02	3.94	–	1778	–	–	–	–
Bukowiecki et al.	2011	5.16⁽¹⁾	3.60	–	1995	–	–	–	–
van den Bergh	2006	4.70	3.91	–	2512	–	–	–	–
Dias et al.	2002	6.60	3.38	–	1995	–	–	–	–

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

Visualization

ℹ️

1 2 3