NGC 1342

(Melotte 21; Collinder 40; MWSC 283; OCL 401; FSR 0679; FoF 2265)

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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) 799
Stellar density (N50/rad) 52.9 [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
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
NGC 1342 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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 contains blue stragglers according to at least one source.

Palma et al. (2025)
Classified as optical pair P261, along with Alessi-Teutsch_9.

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: 0.40 (50th percentile).

Richer et al. (2021)
The expected number of WDs is 37.7, 0 WD candidates found, and 0 WD candidates found in the wide search.

Ahumada & Lapasset (2007)
Only the photoelectric data of (1961PUSNO..17..343H) were examined. References (1985ApJ...294L.103A) and (1982A&A...109...37M) cite star 2=HD 21728 as a blue straggler. In (1985ApJ...294L.103A) this star is given a spectrum A0II-IIIp(Si(st),Mg(wk)) and a projected velocity v.sin i<40km/s. Star 4=HD 275501 has a spectrum G8II according to (2000AJ....120..333S). Both stars have a membership probability of 99% (ref. 148).

Data
🔍 Search references for NGC 1342 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 52.898 37.391 1.519 0.407 -1.678 -10.514
Li et al. 2025 52.894 37.38 1.502 0.52 -1.604 –
Wei et al. 2025 52.908 37.39 1.525 0.406 -1.659 –
Almeida et al. 2025 52.87 37.397 – – – –
Alfonso et al. 2024 52.909 37.39 1.485 0.414 -1.661 –
Zhang et al. 2024 52.953 37.387 – – – –
Hunt & Reffert 2024 52.953 37.387 1.525 0.425 -1.665 -10.159
Cavallo et al. 2024 52.886 37.388 1.525 – – –
Hunt & Reffert 2023 52.953 37.387 1.525 0.425 -1.665 -10.159
Almeida et al. 2023 52.868 37.396 – – – –
Just et al. 2023 52.995 37.356 – – – –
He et al. 2022 52.91 37.383 1.522 0.415 -1.672 –
Tarricq et al. 2022 52.982 37.404 1.52 0.423 -1.68 –
Jadhav & Subramaniam 2021 52.894 37.38 – – – –
Jaehnig et al. 2021 52.953 37.358 1.54 0.556 -1.605 –
Rain et al. 2021 52.894 37.38 1.502 0.52 -1.604 –
Richer et al. 2021 52.939 37.374 1.504 0.546 -1.609 –
Dias et al. 2021 52.87 37.397 1.505 0.523 -1.598 -9.414
Cantat-Gaudin et al. 2020 52.894 37.38 1.502 0.52 -1.604 –
Zhong et al. 2020 52.894 37.38 – 0.52 -1.604 -18.847
Cantat-Gaudin & Anders 2020 52.894 37.38 1.502 0.52 -1.604 –
Liu & Pang 2019 52.87 37.356 1.498 0.516 -1.595 –
Soubiran et al. 2018 52.894 37.38 – – – -9.95
Bica et al. 2019 52.918 37.374 – – – –
Cantat-Gaudin et al. 2018 52.894 37.38 1.502 0.52 -1.604 –
Loktin & Popova 2017 52.905 37.377 – -2.704 -8.046 -11.5
Kharchenko et al. 2016 52.995 37.356 – – – –
Dias et al. 2014 52.908 37.377 – -2.99 -1.82 –
Kharchenko et al. 2013 53.004 37.357 – -3.12 -5.5 -11.5
Gozha et al. 2012 52.908 37.377 – – – –
Kharchenko et al. 2012 53.004 37.357 – -3.12 -5.5 -11.5
Bukowiecki et al. 2011 52.908 37.376 – – – –
Piskunov et al. 2008 52.898 37.336 – – – –
Kharchenko et al. 2007 52.9 37.38 – 0.25 – -11.5
Piskunov et al. 2007 52.898 37.336 – – – –
Ahumada & Lapasset 2007 52.95 37.383 – – – –
van den Bergh 2006 53.31 37.418 – – – –
Kharchenko et al. 2005 52.9 37.34 – 0.13 -2.72 –
Kharchenko et al. 2003 52.9 37.33 – 0.47 -2.86 –
Chen et al. 2003 52.91 37.341 – -0.55 -2.89 -10.9
Dias et al. 2002 52.908 37.377 – -2.99 -1.82 -10.67
Lynga 1987 52.917 37.324 – – – –
Sulentic et al. 1973 52.905 37.334 – – – –

💡 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– 0.67 1.04 2.41 451 -0.136 488 0.525 1
Li et al. 2025 0.62 1.11 – 496 -0.136 – – –
Wei et al. 2025 0.98 1.51 – 380 0.000 792 0.49 –
Almeida et al. 2025 0.63 1.23 – 578 – 880 – –
Alfonso et al. 2024 0.69 0.71 – 1113 -0.113 – – –
Zhang et al. 2024 – – – – -0.200(1) – – –
Hunt & Reffert 2024 – – – – – 1311(1) – –
Cavallo et al. 2024 0.66 1.27 – 288 0.260 – – –
Hunt & Reffert 2023 0.63 1.37 2.41 160 – – – –
Almeida et al. 2023 0.64 1.26 – 403 -0.005 925(1) 0.56 –
Just et al. 2023 – – – 398 – 42 – –
He et al. 2022 – 1.50 – 316 – – – –
Tarricq et al. 2022 0.68 – – 851 – – – –
Jadhav & Subramaniam 2021 0.69 0.71 – 813 – 1204 – 0(1)
Jaehnig et al. 2021 0.65(1) – – – – – – –
Rain et al. 2021 0.65 0.98 – 447 – – – 1
Richer et al. 2021 – 1.05 – 600 – – – –
Dias et al. 2021 0.63 1.23 – 578 -0.115 – – –
Cantat-Gaudin et al. 2020 0.69 0.71 – 813 – – – –
Kounkel et al. 2020 0.65 1.19 – 398 – – – –
Zhong et al. 2020 0.65(1) 1.04 – 8600 -0.205 – – –
Cantat-Gaudin & Anders 2020 0.65 – – – – – – –
Liu & Pang 2019 – – – 871 0.250 – – –
Soubiran et al. 2018 0.65 – – – – – – –
Cantat-Gaudin et al. 2018 0.65 – – – – – – –
Loktin & Popova 2017 0.67 1.09 – 452 – – – –
Kharchenko et al. 2016 0.67 1.04 – 398 – – – –
Kharchenko et al. 2013 0.67 1.04 – 398 -0.160 – – –
Bukowiecki et al. 2012 – – – – – 184 – –
Gozha et al. 2012 0.67 – – 452 -0.160 155 – –
Kharchenko et al. 2012 0.67 1.04 – 398 -0.160 – – –
Bukowiecki et al. 2011 0.43(1) 0.76 – 501 – – – –
Piskunov et al. 2008 0.67 1.01 – 162 – 132(1) – –
Piskunov et al. 2007 0.67 1.01 – 162 – 33 – –
Ahumada & Lapasset 2007 – 1.01 – 457 – – – 2
van den Bergh 2006 0.67 1.01 – 457 – – – –
Kharchenko et al. 2005 0.67 1.01 – 162 – – – –
Kharchenko et al. 2003 0.67 1.01 – – – – – –
Chen et al. 2003 0.67 1.01 – 450 -0.160(1) – – –
Dias et al. 2002 0.67 1.01 – 452 -0.160 – – –
Lynga 1987 0.55 0.85 – 302 -0.130 – – –

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

Visualization
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NGC 1342 UCC
NGC 1342 HUNT23
NGC 1342 CANTAT20
Galactocentric position diagram