NGC 1912

(Melotte 36; Collinder 67; MWSC 557; M 38; OCL 433)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 1157
Stellar density (N50/rad) 55.5 [N/pc2]
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
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
NGC 1912 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 low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 336 along with Saloranta_10.

Palma et al. (2025)
Part of multiple system G113, along with HSC_1350, CWNU_525 and Teutsch_89.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Ahumada & Lapasset (2007)
Only the photoelectric data of (1961PUSNO..17..343H) were examined.

Data
πŸ” Search references for NGC 1912 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 82.184 35.82 0.879 1.549 -4.426 -2.86
Otto et al. 2026 82.167 35.821 – 1.58 -4.42 -1.0
Nizovkina et al. 2025 82.167 35.821 – – – –
Li et al. 2025 82.167 35.824 0.874 1.58 -4.424 –
Wei et al. 2025 82.17 35.819 0.882 1.541 -4.423 –
Almeida et al. 2025 82.173 35.832 – – – –
Zhang et al. 2024 82.167 35.821 – – – –
Hunt & Reffert 2024 82.167 35.821 0.876 1.545 -4.43 -3.663
Cavallo et al. 2024 82.191 35.818 0.877 – – –
Hunt & Reffert 2023 82.167 35.821 0.876 1.545 -4.43 -3.663
Almeida et al. 2023 82.175 35.825 – – – –
Cordoni et al. 2023 82.173 35.832 0.87 1.592 -4.425 –
Just et al. 2023 82.206 35.8 – – – –
He et al. 2022 82.191 35.825 0.881 1.542 -4.425 –
Tarricq et al. 2022 82.157 35.825 0.889 1.549 -4.427 –
Jaehnig et al. 2021 82.17 35.819 0.9 1.602 -4.416 –
Rain et al. 2021 82.167 35.824 0.874 1.58 -4.424 –
Dias et al. 2021 82.173 35.832 0.87 1.592 -4.425 -1.261
Spina et al. 2021 82.175 35.819 0.868 1.589 -4.423 –
Cantat-Gaudin et al. 2020 82.167 35.824 0.874 1.58 -4.424 –
SΓ‘nchez et al. 2020 82.167 35.848 – 1.66 -4.372 –
Donor et al. 2020 82.215 35.8 – 1.99 -4.74 -0.7
Zhong et al. 2020 82.167 35.824 – 1.58 -4.424 -11.307
Cantat-Gaudin & Anders 2020 82.167 35.824 0.874 1.58 -4.424 –
Bossini et al. 2019 82.167 35.824 – – – –
Soubiran et al. 2018 82.167 35.824 – – – -1.49
Bica et al. 2019 82.169 35.837 – – – –
Cantat-Gaudin et al. 2018 82.167 35.824 0.874 1.58 -4.424 –
Loktin & Popova 2017 82.17 35.849 – 0.129 -1.817 1.0
Kharchenko et al. 2016 82.206 35.8 – – – –
Dias et al. 2014 82.167 35.848 – -0.52 -4.14 –
Kharchenko et al. 2013 82.215 35.8 – 0.77 -6.73 1.0
Gozha et al. 2012 82.167 35.848 – – – –
Kharchenko et al. 2012 82.215 35.8 – 0.77 -6.73 1.0
Bukowiecki et al. 2011 82.204 35.807 – – – –
Piskunov et al. 2008 82.175 35.828 – – – –
Kharchenko et al. 2007 82.17 35.85 – 0.41 – –
Piskunov et al. 2007 82.175 35.828 – – – –
Ahumada & Lapasset 2007 82.15 35.85 – – – –
van den Bergh 2006 82.179 35.855 – – – –
Kharchenko et al. 2005 82.18 35.83 – 0.23 -5.44 –
Kharchenko et al. 2003 82.18 35.83 – 0.52 -6.28 –
Chen et al. 2003 82.206 35.809 – 0.32 -5.07 -1.0
Dias et al. 2002 82.167 35.848 – 0.56 -5.56 -44.98
Lynga 1987 82.186 35.834 – – – –
Sulentic et al. 1973 82.17 35.836 – – – –

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– 1.11 0.79 0.98 295 -0.119 1534 0.44 0
Otto et al. 2026 – – – 295 -0.100(15) – – –
Liu et al. 2025 1.68 0.34 – 229 – – – –
Nizovkina et al. 2025 1.03(4) 1.00(4) – 381(4) -0.261(4) – – –
Li et al. 2025 1.02 0.81 – 479 -0.144 – – –
Wei et al. 2025 1.73 1.05 – 295 0.250 1851 0.60 –
Almeida et al. 2025 1.07 1.01 – 258 – 1299 – –
Zhang et al. 2024 – – – – -0.197(1) – – –
Hunt & Reffert 2024 – – – – – 3562(1) – –
Cavallo et al. 2024 1.15 0.85 – 363 0.340 – – –
Hunt & Reffert 2023 1.07 0.73 0.98 270 – – – –
Almeida et al. 2023 1.07 1.00 – 320 -0.022 1462(1) 0.44 –
Cordoni et al. 2023 1.07 1.01 – 258 0.014 2434 0.41 0(1)
Just et al. 2023 – – – 224 – 281 – –
He et al. 2022 – 1.05 – 224 – – – –
Spina et al. 2022 – – – – -0.140 – – –
Tarricq et al. 2022 1.08 – – 302 – – – –
Jaehnig et al. 2021 1.11(1) – – – – – – –
Rain et al. 2021 1.11 0.79 – 316 – – – 1
Dias et al. 2021 1.07 1.01 – 258 0.014 – – –
Spina et al. 2021 1.16 – – 295 -0.129(20) – – –
Cantat-Gaudin et al. 2020 1.11 0.73 – 295 – – – –
Kounkel et al. 2020 1.09 0.92 – 288 – – – –
Donor et al. 2020 – – – – -0.140 – – –
Zhong et al. 2020 1.11(1) 0.65 – 8706 -0.184 – – –
Cantat-Gaudin & Anders 2020 1.11 – – – – – – –
Bossini et al. 2019 1.04 0.64 – 508 -0.100 – – –
Soubiran et al. 2018 1.11 – – – – – – –
Cantat-Gaudin et al. 2018 1.11 – – – – – – –
Loktin & Popova 2017 1.15 0.80 – 298 – – – –
Kharchenko et al. 2016 1.14 1.05 – 224 – – – –
Kharchenko et al. 2013 1.14 1.05 – 224 – – – –
Bukowiecki et al. 2012 – – – – – 1607 – –
Gozha et al. 2012 1.40 – – 316 – 1148 – –
Kharchenko et al. 2012 1.14 1.05 – 224 – – – –
Bukowiecki et al. 2011 1.34(1) 0.76 – 355 – – – –
Piskunov et al. 2008 1.07 0.79 – 363 – 1778(1) – –
Piskunov et al. 2007 1.07 0.79 – 363 – 463 – –
Ahumada & Lapasset 2007 – 0.79 – 288 – – – 0
van den Bergh 2006 1.07 0.79 – 288 – – – –
Kharchenko et al. 2005 1.07 0.79 – 363 – – – –
Kharchenko et al. 2003 1.06 0.79 – – – – – –
Chen et al. 2003 1.07 – – 290 – – – –
Dias et al. 2002 1.40 0.79 – 316 -0.380 – – –
Lynga 1987 1.32 0.73 – 224 -0.110 – – –

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

Visualization
ℹ️
NGC 1912 UCC
NGC 1912 HUNT23
NGC 1912 CANTAT20
Galactocentric position diagram