NGC 5281

(Melotte 120; Collinder 276; VDBH 152; MWSC 2161; OCL 911; vdBergh-Hagen 152; ESO 097 05; FoF 1168)

Click to load Aladin Lite
0.97 UTI
0.84
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 331
Core radius and density 0.8 [pc], 18 [pc-2]
C3 classification AA
  • CN 0.84 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 5281 is a 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 near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.

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

Cavallo et al. (2024)
Gold sample.

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

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2148, e_all=0.0234.

Rain et al. (2021)
This cluster was include in (Dias et al., 2002A&A...389..871D, Cat. B/ocl) however, parameters log(t)=7.669, Av=0.816, [Fe/H]=-0.020 were taken from Bossini et al. (2019A&A...623A.108B, Cat. J/A+A/623/A108).

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Ahumada & Lapasset (2007)
Star 1 is cited as a blue straggler in (1982A&A...109...37M).

Data
🔍 Search references for NGC 5281 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 206.614 -62.917 0.635 -4.685 -2.358 -19.144
Li et al. 2025 206.614 -62.916 0.603 -4.628 -2.389 –
Wei et al. 2025 206.425 -62.931 0.633 -4.675 -2.34 –
Almeida et al. 2025 206.618 -62.912 – – – –
Hunt & Reffert 2024 206.598 -62.916 0.645 -4.708 -2.35 -21.679
Cavallo et al. 2024 206.602 -62.907 0.645 – – –
Hunt & Reffert 2023 206.598 -62.916 0.645 -4.708 -2.35 -21.679
Almeida et al. 2023 206.614 -62.911 – – – –
Just et al. 2023 206.629 -62.923 – – – –
Jaehnig et al. 2021 206.611 -62.913 0.647 -4.654 -2.384 –
Rain et al. 2021 206.614 -62.916 0.603 -4.628 -2.389 –
Richer et al. 2021 206.626 -62.916 0.625 -4.663 -2.367 –
Dias et al. 2021 206.618 -62.912 0.612 -4.635 -2.395 –
Cantat-Gaudin et al. 2020 206.614 -62.916 0.603 -4.628 -2.389 –
Cantat-Gaudin & Anders 2020 206.614 -62.916 0.603 -4.628 -2.389 –
Liu & Pang 2019 206.587 -62.926 0.609 -4.676 -2.36 –
Bossini et al. 2019 206.614 -62.916 – – – –
Soubiran et al. 2018 206.614 -62.916 – – – -19.1
Bica et al. 2019 206.642 -62.913 – – – –
Cantat-Gaudin et al. 2018 206.614 -62.916 0.603 -4.628 -2.389 –
Dias et al. 2018 – – – -4.86 -2.58 –
Dib et al. 2018 206.64 -62.925 – – – –
Loktin & Popova 2017 206.64 -62.917 – -7.291 -2.693 -18.5
Sampedro et al. 2017 206.646 -62.917 – -3.32 -5.86 –
Joshi et al. 2016 206.64 -62.925 – – – –
Kharchenko et al. 2016 206.629 -62.923 – – – –
Netopil et al. 2016 206.646 -62.917 – – – –
Dias et al. 2014 206.646 -62.917 – -3.39 -6.31 –
Kharchenko et al. 2013 206.64 -62.925 – -5.6 -2.6 -18.5
Morales et al. 2013 206.646 -62.917 – – – –
Gozha et al. 2012 206.646 -62.917 – – – –
Piskunov et al. 2008 206.62 -62.915 – – – –
Ahumada & Lapasset 2007 206.65 -62.917 – – – –
van den Bergh 2006 206.625 -62.915 – – – –
Kharchenko et al. 2005 206.64 -62.92 – -4.84 -2.72 –
Kharchenko et al. 2003 206.59 -62.91 – -4.45 -4.16 –
Dias et al. 2002 206.646 -62.917 – -3.39 -6.31 -18.52
Dambis 1999 206.646 -62.917 – – – –
Lynga 1987 206.659 -62.901 – – – –
van den Bergh & Hagen 1975 205.775 -62.65 – – – –
Sulentic et al. 1973 206.666 -62.908 – – – –

💡 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– 1.35 0.82 0.94 58 -0.117 152 0.36 0
Li et al. 2025 1.41 0.81 – 98 -0.055 – – –
Wei et al. 2025 1.32 1.00 – 117 -0.250 1165 0.29 –
Almeida et al. 2025 1.45 0.93 – 60 – 152 – –
Hunt & Reffert 2024 1.48 0.72 0.94 100 – 839(1) – –
Cavallo et al. 2024 1.29 0.99 – 112 -0.240 – – –
Hunt & Reffert 2023 1.48 0.72 0.94 100 – – – –
Almeida et al. 2023 1.46 1.03 – 63 -0.028 423(1) 0.43 –
Just et al. 2023 – – – 58 – 132 – –
Jaehnig et al. 2021 1.54(1) – – – – – – –
Rain et al. 2021 1.58 0.82 – 46 – – – 0
Richer et al. 2021 – 0.92 – 40 – – – –
Dias et al. 2021 1.45 0.93 – 60 0.033 – – –
Cantat-Gaudin et al. 2020 1.58 0.66 – 40 – – – –
Kounkel et al. 2020 1.44 0.99 – 74 – – – –
Cantat-Gaudin & Anders 2020 1.58 – – – – – – –
Liu & Pang 2019 – – – 51 -0.250 – – –
Bossini et al. 2019 1.54 0.82 – 47 -0.020 – – –
Soubiran et al. 2018 1.58 – – – – – – –
Cantat-Gaudin et al. 2018 1.58 – – – – – – –
Dib et al. 2018 1.21 – – 58 – – – –
Loktin & Popova 2017 1.13 0.69 – 16 – – – –
Joshi et al. 2016 1.21 0.82 – 58 – 135 – –
Kharchenko et al. 2016 1.21 0.82 – 58 – – – –
Netopil et al. 2016 7.25 – – 50 – – – –
Kharchenko et al. 2013 1.21 0.82 – 58 – – – –
Morales et al. 2013 1.11 – – 14 – – – –
Gozha et al. 2012 1.11 – – 14 -0.180 138 – –
Paunzen et al. 2010 – – – – -0.180 – – –
Piskunov et al. 2008 1.11 0.85 – 58 – – – –
Ahumada & Lapasset 2007 – 0.73 – 14 – – – 0
van den Bergh 2006 1.11 0.69 – 14 – – – –
Kharchenko et al. 2005 1.11 0.85 – 58 – – – –
Kharchenko et al. 2003 1.11 0.69 – – – – – –
Dias et al. 2002 1.11 0.71 – 14 0.000 – – –
Dambis 1999 1.35 0.73 – 79 – – – –
Lynga 1987 1.30 0.79 – 51 – – – –

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

Visualization
ℹī¸
NGC 5281 UCC
NGC 5281 HUNT23
NGC 5281 CANTAT20
Galactocentric position diagram