FoF 503

(LP 0503)

0.55 UTI

0.76

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 115

Radius (P>50% members) 5.4 [arcmin]

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

ℹ️

FoF 503 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is rarely studied in the literature.

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

Relatively close Moderate extinction Near-solar metallicity Very young

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

Data

🔍 Search references for FoF 503 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	306.371	40.881	0.508	-3.062	-4.57	-13.107
Almeida et al.	2025	306.375	40.864	–	–	–	–
Dias et al.	2021	306.375	40.864	0.484	-2.988	-4.525	–

💡 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
Almeida et al.	2025	1.77	2.84	–	10	–	615	–	–
Dias et al.	2021	1.77	2.84	–	10	-0.074	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0124	50.4	306.41	40.91	0.51	-3.1	-4.18	45.72	0.07
OC 0123	29.6	306.35	40.85	0.56	-3.03	-4.73	-20.58	0.02

💡 Note: The % column shows the percentage of members that FoF 503 shares with each listed object.

Visualization

ℹ️