Collinder 95

Click to load Aladin Lite
0.92 UTI
0.83
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 317
Stellar density (N50/rad) 56.3 [N/pc2]
C3 classification AB
  • CN 0.83 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 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¸
Collinder 95 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a 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.

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

Cavallo et al. (2024)
Wood sample.

Data
🔍 Search references for Collinder 95 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 97.806 9.917 1.496 -2.262 -5.091 7.45
Almeida et al. 2025 97.788 9.91 – – – –
Alfonso et al. 2024 97.82 9.989 1.453 -2.216 -4.995 –
Zhang et al. 2024 97.783 9.839 – – – –
Hunt & Reffert 2024 97.783 9.839 1.495 -2.24 -4.987 4.193
Celli et al. 2024 97.788 9.894 – – – –
Cavallo et al. 2024 97.854 9.973 1.492 – – –
Hunt & Reffert 2023 97.783 9.839 1.495 -2.24 -4.987 4.193
Almeida et al. 2023 97.802 9.9 – – – –
He et al. 2022 97.86 10.031 1.495 -2.18 -4.95 –
Dias et al. 2021 97.788 9.91 1.425 -2.282 -5.187 8.726
Cantat-Gaudin et al. 2020 97.788 9.894 1.458 -2.263 -5.159 –
Donor et al. 2020 97.77 9.91 – -2.05 -5.46 19.7
Cantat-Gaudin & Anders 2020 97.788 9.894 1.458 -2.263 -5.159 –
Dias et al. 2019 97.787 9.894 1.458 -2.263 -5.159 8.726
Monteiro & Dias 2019 97.788 9.894 – -2.25 -5.062 2.204
Soubiran et al. 2018 97.788 9.894 – – – 8.47
Cantat-Gaudin et al. 2018 97.788 9.894 1.458 -2.263 -5.159 –
Loktin & Popova 2017 97.77 9.91 – -0.74 -1.17 -11.0
Dias et al. 2014 97.713 9.944 – -0.74 -1.17 –
Gozha et al. 2012 97.713 9.944 – – – –
Piskunov et al. 2008 97.764 9.899 – – – –
Kharchenko et al. 2007 97.71 9.94 – 0.2 – -11.0
Kharchenko et al. 2005 97.77 9.9 – -1.81 -4.62 -11.0
Kharchenko et al. 2003 97.78 9.92 – -1.53 -4.13 –
Dias et al. 2002 97.713 9.944 – -0.74 -1.17 -11.0

💡 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– 0.645 0.9 2.33 7 -0.043 274 0.47 –
Almeida et al. 2025 0.68 0.90 – 7 – 274 – –
Alfonso et al. 2024 0.64 1.52 – 16 -0.042 – – –
Zhang et al. 2024 – – – – -0.325(1) – – –
Hunt & Reffert 2024 – – – – – 283(1) – –
Celli et al. 2024 – – – 19 – 157 – –
Cavallo et al. 2024 0.91 1.73 – 7 0.090 – – –
Hunt & Reffert 2023 0.64 1.31 2.33 4 – – – –
Almeida et al. 2023 0.65 0.91 – 7 -0.111 379(1) 0.47 –
He et al. 2022 – 0.95 – 3 – – – –
Dias et al. 2021 0.68 0.90 – 7 -0.043 – – –
Cantat-Gaudin et al. 2020 0.66 1.52 – 19 – – – –
Donor et al. 2020 – – – – -0.140 – – –
Cantat-Gaudin & Anders 2020 0.67 – – – – – – –
Dias et al. 2019 0.63 0.59 – 5 1.249 – – –
Monteiro & Dias 2019 0.64 0.72 – 7 0.046 – – –
Soubiran et al. 2018 0.67 – – – – – – –
Cantat-Gaudin et al. 2018 0.67 – – – – – – –
Loktin & Popova 2017 1.24 3.25 – 605 – – – –
Gozha et al. 2012 0.56 – – – – 13 – –
Piskunov et al. 2008 0.56 0.31 – 229 – – – –
Kharchenko et al. 2005 0.56 0.31 – 229 – – – –
Kharchenko et al. 2003 0.56 0.03 – – – – – –
Dias et al. 2002 0.56 0.03 – – – – – –

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

Visualization
ℹī¸
Collinder 95 UCC
Collinder 95 HUNT23
Collinder 95 CANTAT20
Galactocentric position diagram