NGC 2240

(MWSC 900)

0.31 UTI

0.0

C_N

0.04

C_dens

0.12

C_C3

0.7

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 20

Radius (P>50% members) 8.0 [arcmin]

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.12 Very low quality
C_lit 0.7 Moderately studied
C_dup 1.0 Unique

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

Overview

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NGC 2240 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, well above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~4.54 kpc) differs significantly from the median photometric distance (~1.55 kpc).

Relatively close Low extinction Near-solar metallicity Old

Data

🔍 Search references for NGC 2240 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	–	98.345	35.243	0.22	-0.17	-1.774	29.448
Just et al.	2023	98.324	35.267	–	–	–	–
Donor et al.	2020	98.332	35.265	–	0.77	-1.71	26.4
Bica et al.	2019	98.306	35.258	–	–	–	–
Loktin & Popova	2017	98.295	35.251	–	-0.506	-0.578	15.8
Kharchenko et al.	2016	98.324	35.267	–	–	–	–
Dias et al.	2014	98.292	35.25	–	-1.6	-2.16	–
Kharchenko et al.	2013	98.332	35.265	–	-1.01	-1.54	15.8
Gozha et al.	2012	98.292	35.25	–	–	–	–
Kharchenko et al.	2012	98.332	35.265	–	-1.01	-1.54	15.83
Piskunov et al.	2008	98.284	35.249	–	–	–	–
Kharchenko et al.	2007	98.29	35.25	–	0.27	–	15.83
Kharchenko et al.	2005	98.29	35.25	–	1.92	-12.88	–

💡 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
Just et al.	2023	–	–	–	1585	–	79	–	–
Donor et al.	2020	–	–	–	–	-0.150	–	–	–
Loktin & Popova	2017	1.83	0.13	–	1000	–	–	–	–
Kharchenko et al.	2016	1.55	0.45	–	1585	–	–	–	–
Kharchenko et al.	2013	1.55	0.45	–	1585	–	–	–	–
Gozha et al.	2012	0.45	–	–	3162	–	25	–	–
Kharchenko et al.	2012	1.55	0.45	–	1585	–	–	–	–
Piskunov et al.	2008	0.45	0.53	–	3162	–	–	–	–
Kharchenko et al.	2005	0.45	0.53	–	3162	–	–	–	–

Visualization

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