Melotte 25

(Hyades; Collinder 50; MWSC 379; Taurus Moving Cluster; OCL 456; OCSN 220)

1.0 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 560

Stellar density (N₅₀/rad) 35.2 [N/pc²]

C3 classification AA

C_N 1.0 Very rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Melotte 25 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is very well-studied in the literature.

Very close Low extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Melotte 25 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–	67.216	16.761	21.088	102.245	-27.27	39.475
Almeida et al.	2025	67.655	16.842	–	–	–	–
Zhang et al.	2024	66.709	16.081	–	–	–	–
Hunt & Reffert	2024	66.709	16.081	21.232	104.136	-28.732	39.264
Cavallo et al.	2024	67.113	17.255	21.259	–	–	–
Hunt & Reffert	2023	66.709	16.081	21.232	104.136	-28.732	39.264
Qin et al.	2023	66.77	16.38	20.8	98.32	-26.49	39.44
He et al.	2022	66.943	16.558	21.386	106.447	-26.814	–
Jaehnig et al.	2021	66.707	15.852	21.33	106.97	-25.36	–
Dias et al.	2021	67.655	16.842	21.182	103.058	-27.163	39.34
Cantat-Gaudin et al.	2020	67.447	16.948	21.059	103.018	-27.228	–
Bica et al.	2019	66.711	15.872	–	–	–	–
Loktin & Popova	2017	66.72	15.867	–	–	–	39.29
Kharchenko et al.	2016	66.717	15.867	–	–	–	–
Dias et al.	2014	66.725	15.867	–	1.43	-4.26	–
Gozha et al.	2012	66.725	15.867	–	–	–	–
Kharchenko et al.	2007	66.72	15.87	–	10.0	–	–
van den Bergh	2006	66.725	15.867	–	–	–	–
Chen et al.	2003	66.725	15.871	–	–	–	–
Dias et al.	2002	66.725	15.867	–	–	–	39.29

💡 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–	0.05	0.03	0.6	787	0.130	188	–	–
Almeida et al.	2025	0.05	0.03	–	836	–	184	–	–
Zhang et al.	2024	–	–	–	–	0.166⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	193⁽¹⁾	–	–
Cavallo et al.	2024	0.05	0.48	–	204	-0.040	–	–	–
Hunt & Reffert	2023	0.05	0.17	0.60	577	–	–	–	–
Qin et al.	2023	0.05	0.12	–	708	–	–	–	–
He et al.	2022	–	0.55	–	562	–	–	–	–
Jaehnig et al.	2021	0.05⁽¹⁾	–	–	–	–	–	–	–
Dias et al.	2021	0.05	0.03	–	836	0.149	–	–	–
Cantat-Gaudin et al.	2020	0.05	0.00	–	794	–	–	–	–
Loktin & Popova	2017	0.04	0.03	–	787	–	–	–	–
Kharchenko et al.	2016	0.05	0.03	–	787	–	–	–	–
Gozha et al.	2012	0.04	–	–	787	0.130	–	–	–
van den Bergh	2006	0.04	0.03	–	794	–	–	–	–
Chen et al.	2003	0.04	0.03	–	780	0.130⁽¹⁾	–	–	–
Dias et al.	2002	0.04	0.03	–	787	0.130	–	–	–

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

Visualization

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