Gulliver 55

0.55 UTI

0.5

C_N

0.44

C_dens

1.0

C_C3

0.42

C_lit

1.0

C_dup

N_m (P>50%) 50

Core radius and density 1.8 [pc], 2.2 [pc^-2]

C3 classification AA

C_N 0.5 Moderately populated
C_dens 0.44 Loose
C_C3 1.0 Very high quality
C_lit 0.42 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Gulliver 55 is a moderately populated, loose object of very high 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, old cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

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

Relatively close Low extinction Near-solar metallicity Old Contains BSS

Almeida et al. (2025)
Mass determination: worst fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.64 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.64 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.4217, e_all=0.2862.

Rain et al. (2021)
This cluster was not include in (Dias et al., 2002A&A...389..871D, Cat. B/ocl), parameters log(t)=9.20, E(b-v)=0.28 and Z=0.05 are from Monteiro & Dias (2019MNRAS.487.2385M). Apparently star Gaia DR2 1821639395722981888 is a massive straggler.

Data

🔍 Search references for Gulliver 55 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–	297.83	18.664	0.343	-2.026	-2.542	24.421
Li et al.	2025	297.833	18.661	0.369	-2.043	-2.53	–
Hu & Soubiran	2025	297.828	18.662	–	–	–	–
Almeida et al.	2025	297.832	18.65	–	–	–	–
Hunt & Reffert	2024	297.83	18.675	0.346	-2.061	-2.597	24.816
Cavallo et al.	2024	297.828	18.662	0.348	–	–	–
Hunt & Reffert	2023	297.83	18.675	0.346	-2.061	-2.597	24.816
Jadhav & Subramaniam	2021	297.833	18.661	–	–	–	–
Rain et al.	2021	297.833	18.661	0.369	-2.043	-2.53	–
Dias et al.	2021	297.832	18.65	0.368	-2.062	-2.52	24.333
Cantat-Gaudin et al.	2020	297.833	18.661	0.369	-2.043	-2.53	–
Cantat-Gaudin & Anders	2020	297.833	18.661	0.369	-2.043	-2.53	–
Monteiro & Dias	2019	297.833	18.661	–	–	–	2.385
Soubiran et al.	2018	297.833	18.661	–	–	–	24.21
Cantat-Gaudin et al.	2018	297.833	18.661	0.369	-2.043	-2.53	–

💡 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–	2.51	0.92	1.235	1614	0.048	226	–	2
Li et al.	2025	2.40	1.29	–	1979	-0.364	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.130⁽⁵⁾	–	–	–
Almeida et al.	2025	2.52	0.86	–	2382	–	74	–	–
Hunt & Reffert	2024	2.65	1.16	1.23	572	–	373⁽¹⁾	–	–
Cavallo et al.	2024	2.37	1.05	–	741	0.400	–	–	–
Hunt & Reffert	2023	2.65	1.16	1.24	571	–	–	–	–
Jadhav & Subramaniam	2021	2.37	0.92	–	1995	–	226	–	2⁽¹⁾
Rain et al.	2021	2.51	0.88	–	1585	–	–	–	3
Dias et al.	2021	2.52	0.86	–	2382	0.112	–	–	–
Cantat-Gaudin et al.	2020	2.37	0.92	–	1995	–	–	–	–
Kounkel et al.	2020	2.69	1.26	–	933	–	–	–	–
Cantat-Gaudin & Anders	2020	2.51	–	–	–	–	–	–	–
Monteiro & Dias	2019	2.34	0.90	–	1614	0.048	–	–	–
Soubiran et al.	2018	2.51	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.51	–	–	–	–	–	–	–

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

Visualization

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