NGC 6611

(M16)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 623
Core radius and density 0.8 [pc], 61 [pc-2]
C3 classification AA
  • CN 1.0 Very rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
NGC 6611 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object shares a very small percentage of members with 3 later reported entries. See table with shared members information.

Palma et al. (2025)
Classified as optical pair P552, along with UBC_1017.

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.14 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.14 (50th percentile).

Morales et al. (2013)
Classified as morphological type 'OC0' (emerging exposed cluster). Morphological flag: one or a few submm emission within the cluster area, but the submm emission is likely associated to the cluster.

Ahumada & Lapasset (2007)
Selected angular diameter from (1987, Lund Catalogue of Open Cluster Data). The dereddened colour- magnitude diagram in (1961ApJ...133..438W) was examined.

Lada & Lada (2003)
Embedded cluster within âˆŧ2 Kpc of the Sun.

Data
🔍 Search references for NGC 6611 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 274.68 -13.788 0.545 0.2 -1.618 10.632
Almeida et al. 2025 274.695 -13.802 – – – –
Hunt & Reffert 2024 274.675 -13.79 0.54 0.228 -1.608 20.115
Celli et al. 2024 274.688 -13.792 – – – –
Cavallo et al. 2024 274.711 -13.819 0.547 – – –
Hunt & Reffert 2023 274.675 -13.79 0.54 0.228 -1.608 20.115
Jaehnig et al. 2021 274.688 -13.792 0.575 0.203 -1.549 –
Rain et al. 2021 274.688 -13.792 0.566 0.178 -1.576 –
Dias et al. 2021 274.695 -13.802 0.559 0.198 -1.56 -16.374
Cantat-Gaudin et al. 2020 274.688 -13.792 0.566 0.178 -1.576 –
Cantat-Gaudin & Anders 2020 274.688 -13.792 0.566 0.178 -1.576 –
Soubiran et al. 2018 274.688 -13.792 – – – 3.7
Cantat-Gaudin et al. 2018 274.688 -13.792 0.566 0.178 -1.576 –
Dias et al. 2018 – – – 0.57 -1.78 –
Dib et al. 2018 274.672 -13.78 – – – –
Loktin & Popova 2017 274.68 -13.78 – 0.484 -0.908 18.0
Sampedro et al. 2017 274.7 -13.807 – -1.49 -1.26 –
Joshi et al. 2016 274.672 -13.78 – – – –
Dias et al. 2014 274.7 -13.807 – -1.49 -1.12 –
Morales et al. 2013 274.683 -13.797 – – – –
Gozha et al. 2012 274.7 -13.807 – – – –
Bukowiecki et al. 2011 274.679 -13.785 – – – –
Piskunov et al. 2008 274.687 -13.816 – – – –
Kharchenko et al. 2007 274.69 -13.81 – 0.22 – 18.0
Piskunov et al. 2007 274.687 -13.816 – – – –
Ahumada & Lapasset 2007 274.7 -13.8 – – – –
van den Bergh 2006 274.7 -13.817 – – – –
Kharchenko et al. 2005 274.69 -13.81 – 1.6 -0.35 18.0
Lada & Lada 2003 274.7 -13.783 – – – –
Kharchenko et al. 2003 274.68 -13.8 – 1.19 1.76 –
Chen et al. 2003 274.716 -13.763 – 2.09 -0.9 23.5
Dias et al. 2002 274.7 -13.807 – -1.49 -1.12 10.0
Dambis 1999 274.7 -13.807 – – – –
Lynga 1987 274.721 -13.777 – – – 23.0
Sulentic et al. 1973 274.705 -13.772 – – – –

💡 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] Bfrac BSS
UCC 99999– 1.72 2.41 2.92 5 -0.405 1000 – 0
Almeida et al. 2025 1.58 2.15 – 10 – 909 – –
Hunt & Reffert 2024 1.72 2.51 2.92 6 – 3519(1) – –
Celli et al. 2024 – – – 2 – 1697 – –
Cavallo et al. 2024 1.56 2.67 – 8 -0.350 – – –
Hunt & Reffert 2023 1.72 2.51 2.92 6 – – – –
Jaehnig et al. 2021 1.76(1) – – – – – – –
Rain et al. 2021 1.68 2.52 – 1 – – – 0
Dias et al. 2021 1.58 2.15 – 10 0.066 – – –
Kounkel et al. 2020 1.87 3.08 – 2 – – – –
Cantat-Gaudin & Anders 2020 1.68 – – – – – – –
Soubiran et al. 2018 1.68 – – – – – – –
Cantat-Gaudin et al. 2018 1.68 – – – – – – –
Dib et al. 2018 1.65 – – 2 – – – –
Loktin & Popova 2017 1.72 2.41 – 8 – – – –
Joshi et al. 2016 1.65 3.12 – 2 – 1000 – –
Morales et al. 2013 1.80 – – 2 – – – –
Bukowiecki et al. 2012 – – – – – 1241 – –
Gozha et al. 2012 1.80 – – 1 -0.460 1000 – –
Bukowiecki et al. 2011 0.56(1) 2.18 – 14 – – – –
Paunzen et al. 2010 – – – – -0.460 – – –
Piskunov et al. 2008 1.72 2.21 – 5 – 1368(1) – –
Piskunov et al. 2007 1.72 2.21 – 5 – 255 – –
Ahumada & Lapasset 2007 – 2.46 – 8 – – – 0
van den Bergh 2006 1.75 2.46 – 8 – – – –
Kharchenko et al. 2005 1.72 2.21 – 5 – – – –
Lada & Lada 2003 1.80 – – – – 960 – –
Kharchenko et al. 2003 2.00 2.05 – – – – – –
Chen et al. 2003 1.75 – – 0 – – – –
Dias et al. 2002 1.80 2.52 – 1 – – – –
Dambis 1999 1.74 2.15 – 3 – – – –
Lynga 1987 2.50 2.24 – 5 – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
VVVX CL101 7.4 274.77 -13.79 0.52 0.4 -1.71 15.05 0.02
VVVX CL100 7.1 274.68 -13.82 0.54 0.16 -1.77 -16.27 0.0
VVVX CL099 6.7 274.69 -13.79 0.53 0.24 -1.61 10.26 0.0

💡 Note: The % column shows the percentage of members that NGC 6611 shares with each listed object.

Visualization
ℹī¸
NGC 6611 UCC
NGC 6611 HUNT23
NGC 6611 CANTAT20
Galactocentric position diagram