Stock 7

(MWSC 202; FoF 2320)

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0.80 UTI
0.77
CN
1.0
Cdens
1.0
CC3
1.0
Clit
0.84
Cdup
C3 classification AA
Number of members (P>50%) 157
Radius (P>50% members) 13.9 [arcmin]
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 0.84 Very likely unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Stock 7 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

Close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Stock 7 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 37.438 60.606 1.469 -3.533 0.464 -7.816
Li et al. 2025 37.431 60.627 1.441 -3.496 0.484 –
Almeida et al. 2025 37.419 60.624 – – – –
Alfonso et al. 2024 37.404 60.622 1.436 -3.538 0.448 –
Hunt & Reffert 2024 37.424 60.655 1.461 -3.533 0.429 -8.369
Cavallo et al. 2024 37.579 60.521 1.465 – – –
Hunt & Reffert 2023 37.424 60.655 1.461 -3.533 0.429 -8.369
Almeida et al. 2023 37.449 60.642 – – – –
Just et al. 2023 37.42 60.672 – – – –
He et al. 2022 37.429 60.641 1.471 -3.549 0.47 –
Tarricq et al. 2022 37.453 60.594 1.466 -3.597 0.473 –
Jaehnig et al. 2021 37.445 60.67 1.477 -3.523 0.585 –
Rain et al. 2021 37.431 60.627 1.441 -3.496 0.484 –
Dias et al. 2021 37.419 60.624 1.439 -3.482 0.511 4.769
Cantat-Gaudin et al. 2020 37.431 60.627 1.441 -3.496 0.484 –
Cantat-Gaudin & Anders 2020 37.431 60.627 1.441 -3.496 0.484 –
Liu & Pang 2019 37.463 60.609 1.441 -3.464 0.517 –
Soubiran et al. 2018 37.431 60.627 – – – 4.79
Cantat-Gaudin et al. 2018 37.431 60.627 1.441 -3.496 0.484 –
Kharchenko et al. 2016 37.42 60.672 – – – –
Kharchenko et al. 2013 37.432 60.675 – -2.38 -1.33 -3.7
Kharchenko et al. 2012 37.432 60.675 – -2.38 -1.33 -3.67
Piskunov et al. 2008 37.406 60.706 – – – –
Kharchenko et al. 2007 37.41 60.71 – 0.18 – -3.67
van den Bergh 2006 37.4 60.717 – – – –
Kharchenko et al. 2005 37.41 60.71 – -4.89 -0.62 -0.5
Chen et al. 2003 37.225 60.645 – -3.33 0.24 -8.0

💡 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] Bfr BSS
Li et al. 2025 0.60 1.41 – 330 0.054 – – –
Almeida et al. 2025 0.67 1.62 – 100 – 361 – –
Alfonso et al. 2024 0.71 1.46 – 72 0.327 – – –
Hunt & Reffert 2024 – – – – – 422* – –
Cavallo et al. 2024 0.71 1.95 – 36 -0.030 – – –
Hunt & Reffert 2023 0.64 1.69 1.62 56 – – – –
Almeida et al. 2023 0.66 1.74 – 150 0.067 260* 0.64 –
Just et al. 2023 – – – 63 – 17 – –
He et al. 2022 – 1.90 – 50 – – – –
Tarricq et al. 2022 0.69 – – 78 – – – –
Jaehnig et al. 2021 0.68* – – – – – – –
Rain et al. 2021 0.68 1.86 – 16 – – – 0
Dias et al. 2021 0.67 1.62 – 100 0.327 – – –
Cantat-Gaudin et al. 2020 0.71 1.46 – 72 – – – –
Cantat-Gaudin & Anders 2020 0.68 – – – – – – –
Liu & Pang 2019 – – – 43 0.000 – – –
Soubiran et al. 2018 0.68 – – – – – – –
Cantat-Gaudin et al. 2018 0.68 – – – – – – –
Kharchenko et al. 2016 0.85 1.65 – 63 – – – –
Kharchenko et al. 2013 0.85 1.65 – 63 – – – –
Kharchenko et al. 2012 0.85 1.65 – 63 – – – –
Piskunov et al. 2008 0.70 1.74 – 13 – – – –
van den Bergh 2006 0.70 1.89 – 16 – – – –
Kharchenko et al. 2005 0.70 1.74 – 13 – – – –
Chen et al. 2003 0.45 – – 10 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
Markarian 6 15.9 37.43 60.68 1.47 -3.55 0.48 -5.89 0.48

💡 Note: The % column shows the percentage of members that Stock 7 shares with each listed object.

Visualization
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Stock 7 UCC
Stock 7 HUNT23
Stock 7 CANTAT20
Galactocentric position diagram