Collinder 311

(VDBH 196; NGC 6200; MWSC 2450; OCL 978; vdBergh-Hagen 196; ESO 277 08)

Click to load Aladin Lite
0.92 UTI
0.58
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 67
Stellar density (N50/rad) 6.6 [N/pc2]
C3 classification AA
  • CN 0.58 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Collinder 311 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a moderate* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~2.88 kpc) differs significantly from the median photometric distance (~2.13 kpc).

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

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 311 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 251.019 -47.472 0.347 -0.971 -2.286 -43.355
Almeida et al. 2025 251.032 -47.458 – – – –
Hunt & Reffert 2024 251.023 -47.466 0.361 -0.983 -2.292 -14.912
Cavallo et al. 2024 251.021 -47.481 0.361 – – –
Hunt & Reffert 2023 251.023 -47.466 0.361 -0.983 -2.292 -14.912
Just et al. 2023 251.029 -47.465 – – – –
Jaehnig et al. 2021 251.025 -47.491 0.351 -0.871 -2.236 –
Dias et al. 2021 251.032 -47.458 0.307 -0.95 -2.244 –
SΓ‘nchez et al. 2020 251.029 -47.463 – -0.894 -2.255 –
Bica et al. 2019 251.025 -47.468 – – – –
Loktin & Popova 2017 251.025 -47.464 – 1.361 -3.593 -20.77
Kharchenko et al. 2016 251.029 -47.465 – – – –
Dias et al. 2014 251.029 -47.463 – -0.93 -2.34 -20.77
Kharchenko et al. 2013 251.04 -47.465 – 0.94 -3.8 –
Piskunov et al. 2008 251.013 -47.462 – – – –
van den Bergh 2006 251.025 -47.467 – – – –
Kharchenko et al. 2005 251.02 -47.46 – 1.6 -4.72 –
Kharchenko et al. 2003 251.04 -47.46 – 1.93 -5.32 –
Dias et al. 2002 251.029 -47.463 – -0.92 -2.37 -20.77
Dambis 1999 251.025 -47.467 – – – –

πŸ’‘ 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– 2.13 1.8 1.1 10 -0.212 1488 – –
Almeida et al. 2025 2.35 1.86 – 14 – 1488 – –
Hunt & Reffert 2024 – – – – – 1254(1) – –
Cavallo et al. 2024 1.90 2.05 – 32 -0.590 – – –
Hunt & Reffert 2023 2.69 1.77 1.10 12 – – – –
Just et al. 2023 – – – 10 – 2553 – –
Jaehnig et al. 2021 2.83(1) – – – – – – –
Dias et al. 2021 2.35 1.86 – 14 0.166 – – –
Loktin & Popova 2017 1.97 1.73 – 11 – – – –
Kharchenko et al. 2016 2.21 1.68 – 10 – – – –
Kharchenko et al. 2013 2.21 1.68 – 10 – – – –
Piskunov et al. 2008 2.05 1.80 – 10 – – – –
van den Bergh 2006 2.05 1.80 – 9 – – – –
Kharchenko et al. 2005 2.05 1.80 – 10 – – – –
Kharchenko et al. 2003 2.05 1.55 – – – – – –
Dias et al. 2002 2.05 1.80 – 8 – – – –
Dambis 1999 2.49 1.83 – 10 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 318 20.9 251.12 -47.58 0.34 -0.94 -2.23 -43.36 0.09

πŸ’‘ Note: The % column shows the percentage of members that Collinder 311 shares with each listed object.

Visualization
ℹ️
Collinder 311 UCC
Collinder 311 HUNT23
Galactocentric position diagram