NGC 1545

(Collinder 49; MWSC 369; OCL 399; FoF 2322; LISC 3450)

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0.91 UTI
0.84
CN
0.97
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 336
Core radius and density 2.5 [pc], 4.8 [pc-2]
C3 classification AB
  • CN 0.84 Rich
  • Cdens 0.97 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¸
NGC 1545 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, 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.

Liu et al. (2025)
Classified as primordial binary cluster 276 along with UPK_325.

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: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Richer et al. (2021)
The expected number of WDs is 3.3, 0 WD candidates found, and 0 WD candidates found in the wide search.

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1227, e_all=0.0462.

Rain et al. (2021)
This cluster was include in (Dias et al., 2002A&A...389..871D, Cat. B/ocl) however, parameters log(t)=8.019, Av=0.917, [Fe/H]=-0.060 were taken from Bossini et al. (2019A&A...623A.108B, Cat. J/A+A/623/A108). The distance d=668.6 (dmode+01) of Cantat-Gaudin et al. (2018A&A...618A..93C, Cat. J/A+A18/A93) was use to fit the isochrone.

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

Data
🔍 Search references for NGC 1545 in: SciX Simbad
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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 65.202 50.208 1.395 -2.019 -0.138 -14.285
Li et al. 2025 65.202 50.221 1.367 -1.957 -0.082 –
Yang et al. 2025 65.277 50.248 – – – –
Almeida et al. 2025 65.176 50.228 – – – –
Alfonso et al. 2024 65.202 50.205 1.368 -2.033 -0.106 –
Zhang et al. 2024 65.277 50.248 – – – –
Hunt & Reffert 2024 65.277 50.248 1.382 -2.022 -0.135 -13.295
Cavallo et al. 2024 65.203 50.215 1.393 – – –
Hunt & Reffert 2023 65.277 50.248 1.382 -2.022 -0.135 -13.295
Almeida et al. 2023 65.188 50.26 – – – –
Just et al. 2023 65.284 50.252 – – – –
He et al. 2022 65.224 50.246 1.403 -2.042 -0.097 –
Tarricq et al. 2022 65.227 50.205 1.407 -2.033 -0.109 –
Jaehnig et al. 2021 65.281 50.253 1.385 -1.945 -0.108 –
Rain et al. 2021 65.202 50.221 1.367 -1.957 -0.082 –
Richer et al. 2021 65.193 50.23 1.356 -1.964 -0.112 –
Dias et al. 2021 65.176 50.228 1.361 -1.965 -0.088 -11.386
Cantat-Gaudin et al. 2020 65.202 50.221 1.367 -1.957 -0.082 –
Zhong et al. 2020 65.202 50.221 – -1.957 -0.082 -10.042
Cantat-Gaudin & Anders 2020 65.202 50.221 1.367 -1.957 -0.082 –
Liu & Pang 2019 65.267 50.288 1.348 -1.975 -0.093 –
Bossini et al. 2019 65.202 50.221 – – – –
Soubiran et al. 2018 65.202 50.221 – – – -11.36
Bica et al. 2019 65.212 50.249 – – – –
Cantat-Gaudin et al. 2018 65.202 50.221 1.367 -1.957 -0.082 –
Dias et al. 2018 – – – 0.12 -1.77 –
Dib et al. 2018 65.295 50.252 – – – –
Loktin & Popova 2017 65.235 50.254 – -1.174 1.228 -10.8
Sampedro et al. 2017 65.237 50.253 – -0.23 -1.35 –
Joshi et al. 2016 65.295 50.252 – – – –
Kharchenko et al. 2016 65.284 50.252 – – – –
Netopil et al. 2016 65.237 50.253 – – – –
Dias et al. 2014 65.237 50.253 – -0.22 -1.52 –
Kharchenko et al. 2013 65.295 50.252 – -0.44 1.46 -10.8
Gozha et al. 2012 65.238 50.253 – – – –
Kharchenko et al. 2012 65.295 50.252 – -0.44 1.46 -10.84
Piskunov et al. 2008 65.234 50.249 – – – –
Kharchenko et al. 2007 65.23 50.25 – 0.21 – -10.84
Piskunov et al. 2007 65.234 50.249 – – – –
Ahumada & Lapasset 2007 65.25 50.25 – – – –
van den Bergh 2006 65.225 50.25 – – – –
Kharchenko et al. 2005 65.23 50.25 – -1.63 -1.0 -12.7
Kharchenko et al. 2003 65.25 50.28 – -0.9 -0.53 –
Chen et al. 2003 65.267 50.242 – 0.45 -3.12 -12.0
Dias et al. 2002 65.237 50.253 – -0.22 -1.52 -12.42
Lynga 1987 65.223 50.242 – – – -15.0
Sulentic et al. 1973 65.222 50.259 – – – –

💡 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– 0.72 0.96 1.63 204 -0.060 73 0.56 0
Liu et al. 2025 1.24 0.45 – 71 – – – –
Li et al. 2025 0.70 0.91 – 229 0.034 – – –
Yang et al. 2025 – – – 100 -0.140(3) – – –
Almeida et al. 2025 0.70 1.09 – 208 – 352 – –
Alfonso et al. 2024 0.73 0.77 – 138 0.076 – – –
Zhang et al. 2024 – – – – -0.121(1) – – –
Hunt & Reffert 2024 0.68 0.99 1.63 99 – 448(1) – –
Cavallo et al. 2024 0.73 1.12 – 138 0.370 – – –
Hunt & Reffert 2023 0.68 0.99 1.63 99 – – – –
Almeida et al. 2023 0.69 1.24 – 134 -0.030 287(1) 0.56 –
Deng & Li 2023 0.52 0.62 – 1000 -0.069 – – –
Just et al. 2023 – – – 646 – 7 – –
He et al. 2022 – 1.30 – 79 – – – –
Tarricq et al. 2022 0.72 – – 120 – – – –
Jaehnig et al. 2021 0.72(1) – – – – – – –
Rain et al. 2021 0.72 0.91 – 102 – – – 0
Richer et al. 2021 – 1.09 – 110 – – – –
Dias et al. 2021 0.70 1.09 – 208 0.075 – – –
Cantat-Gaudin et al. 2020 0.73 0.77 – 110 – – – –
Kounkel et al. 2020 0.71 1.10 – 204 – – – –
Zhong et al. 2020 0.72(1) 0.93 – 8019 0.021 – – –
Cantat-Gaudin & Anders 2020 0.72 – – – – – – –
Liu & Pang 2019 – – – 66 0.250 – – –
Bossini et al. 2019 0.70 0.92 – 104 -0.060 – – –
Soubiran et al. 2018 0.72 – – – – – – –
Cantat-Gaudin et al. 2018 0.72 – – – – – – –
Dib et al. 2018 0.86 – – 646 – – – –
Loktin & Popova 2017 0.73 0.97 – 276 – – – –
Joshi et al. 2016 0.86 1.12 – 646 – 58 – –
Kharchenko et al. 2016 0.86 1.12 – 646 – – – –
Netopil et al. 2016 8.69 – – 280 -0.060(2) – – –
Heiter et al. 2014 – – – – -0.060 – – –
Kharchenko et al. 2013 0.86 1.12 – 646 -0.060 – – –
Gozha et al. 2012 0.71 – – 281 -0.130 58 – –
Kharchenko et al. 2012 0.86 1.12 – 646 -0.060 – – –
Paunzen et al. 2010 – – – – -0.130 – – –
Piskunov et al. 2008 0.71 0.95 – 141 – 88(1) – –
Piskunov et al. 2007 0.71 0.95 – 141 – 14 – –
Ahumada & Lapasset 2007 – 0.95 – 282 – – – 0
van den Bergh 2006 0.71 0.95 – 282 – – – –
Kharchenko et al. 2005 0.71 0.95 – 141 – – – –
Kharchenko et al. 2003 0.71 0.95 – – – – – –
Chen et al. 2003 0.71 0.96 – 280 -0.060(1) – – –
Dias et al. 2002 0.71 0.96 – 281 -0.130 – – –
Lynga 1987 0.80 1.07 – 195 – – – –

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

Visualization
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NGC 1545 UCC
NGC 1545 HUNT23
NGC 1545 CANTAT20
Galactocentric position diagram