HSC 1815

0.02 UTI

0.0

C_N

0.69

C_dens

0.12

C_C3

0.0

C_lit

0.12

C_dup

C3 classification DC

Number of members (P>50%) 18

Radius (P>50% members) 8.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.69 Moderately dense
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 0.12 Likely duplicate

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

Overview

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HSC 1815 is a sparse, moderately dense object of very low C3 quality. Its parallax locates it at a close^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

(*): The parallax distance estimate (~0.91 kpc) differs significantly from the median photometric distance (~0.67 kpc).

Close Moderate extinction Old

Data

🔍 Search references for HSC 1815 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	–	109.437	-15.78	1.096	0.491	5.452	–
Hunt & Reffert	2024	109.512	-15.942	1.456	0.549	5.381	–
Hunt & Reffert	2023	109.512	-15.942	1.456	0.549	5.381	–

💡 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
Hunt & Reffert	2024	–	–	–	–	–	127*	–	–
Hunt & Reffert	2023	0.67	2.97	0.46	3148	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Melotte 64	88.0	109.44	-15.63	0.92	0.38	5.63	27.69	1.0
OC 0391	28.0	109.45	-15.63	0.98	0.41	5.55	27.51	0.0

💡 Note: The % column shows the percentage of members that HSC 1815 shares with each listed object.

Visualization

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