Gem4

0.31 UTI

0.62

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.65

C_dup

N₅₀ (P>50% members) 74

Stellar density (N₅₀/rad) 18.9 [N/pc²]

C3 classification AB

C_N 0.62 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.65 Likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Gem4 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane. It is catalogued as a cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 23 years.

(*): The parallax distance estimate (~2.13 kpc) differs significantly from the median photometric distance (~1.50 kpc).

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close

Lada & Lada (2003)
Embedded cluster within ∼2 Kpc of the Sun.

Data

🔍 Search references for Gem4 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–	92.132	21.526	0.47	0.379	-1.914	–
Lada & Lada	2003	92.171	21.514	–	–	–	–

💡 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–	1.5	–	–	–	–	190	–	–
Lada & Lada	2003	1.50	–	–	–	–	190	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
AFGL6366-S	35.1	92.13	21.52	0.48	0.4	-1.91	–	0.35
AFGL6366-N	29.7	92.16	21.54	0.49	0.34	-2.1	–	0.25
DB2001-27	12.2	92.38	21.4	0.52	0.19	-2.35	44.54	0.37
AFGL5180	1.4	92.18	21.68	0.36	-0.07	-1.48	30.87	0.11

💡 Note: The % column shows the percentage of members that Gem4 shares with each listed object.

Visualization

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