Pfleiderer 4

(MWSC 3764; PWM 4)

0.76 UTI

0.75

C_N

1.0

C_dens

0.75

C_C3

0.65

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 109

Radius (P>50% members) 1.1 [arcmin]

C_N 0.75 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.65 Moderately studied
C_dup 1.0 Unique

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

Overview

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Pfleiderer 4 is a rich, very dense object of high C3 quality. Its parallax locates it at a very large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, old cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~10.36 kpc) differs significantly from the median photometric distance (~7.72 kpc).

Very distant Moderate extinction Massive Old

Data

🔍 Search references for Pfleiderer 4 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	–	357.722	62.317	0.097	-1.332	-0.497	-94.445
Hunt & Reffert	2024	357.734	62.318	0.043	-1.342	-0.486	–
He et al.	2023	357.721	62.319	0.118	-1.304	-0.503	-121.01
Hunt & Reffert	2023	357.734	62.318	0.043	-1.342	-0.486	–
Just et al.	2023	357.719	62.316	–	–	–	–
Bica et al.	2019	357.713	62.319	–	–	–	–
Loktin & Popova	2017	357.72	62.316	–	1.638	-5.62	-125.9
Kharchenko et al.	2016	357.719	62.316	–	–	–	–
Dias et al.	2014	357.729	62.321	–	2.84	5.67	–
Kharchenko et al.	2013	357.727	62.32	–	1.6	-5.53	-125.9
Kharchenko et al.	2012	357.79	62.315	–	1.52	-5.21	–
Dias et al.	2002	357.729	62.321	–	2.84	5.67	–

💡 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	–	–	–	–	–	2188*	–	–
He et al.	2023	7.08	2.95	–	1585	–	–	–	–
Hunt & Reffert	2023	13.13	3.71	1.12	452	–	–	–	–
Just et al.	2023	–	–	–	4467	–	3802	–	–
Loktin & Popova	2017	2.97	1.61	–	380	–	–	–	–
Kharchenko et al.	2016	7.72	2.52	–	4467	–	–	–	–
Kharchenko et al.	2013	7.72	2.52	–	4467	–	–	–	–
Kharchenko et al.	2012	8.00	2.48	–	6310	–	–	–	–
Dias et al.	2002	7.90	1.92	–	6310	–	–	–	–

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

Visualization

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