MCM 77

(MCM2005b 77)

0.11 UTI

0.0

C_N

0.36

C_dens

0.25

C_C3

0.0

C_lit

0.92

C_dup

N₅₀ (P>50% members) 20

Stellar density (N₅₀/rad) 1.8 [N/pc²]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.36 Loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 0.92 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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MCM 77 is a sparse, loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near 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 13 years.

(*): The parallax distance estimate (~2.74 kpc) differs significantly from the median photometric distance (~6.08 kpc).

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

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.92) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very distant

Morales et al. (2013)
Classified as morphological type 'OC0' (emerging exposed cluster). Morphological flag: possibly associated submm emission surrounding the cluster.

Mercer et al. (2005)
Association of stars. Detected using no magnitude cut. Detected in 2MASS catalog with our algorithm.

Data

🔍 Search references for MCM 77 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–	244.333	-50.53	0.364	-4.076	-4.087	-43.497
Morales et al.	2013	244.363	-50.511	–	–	–	–
Mercer et al.	2005	244.367	-50.511	–	–	–	–

💡 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–	6.08	–	–	–	–	–	–	–
Morales et al.	2013	6.08	–	–	–	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
DBSB 163	8.0	244.69	-50.31	0.34	-4.18	-4.16	–	0.1

💡 Note: The % column shows the percentage of members that MCM 77 shares with each listed object.

Visualization

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