UPK 39

(OCSN 291)

Click to load Aladin Lite
0.68 UTI
0.79
CN
1.0
Cdens
0.75
CC3
0.44
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 196
Radius (P>50% members) 17.8 [arcmin]
  • CN 0.79 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.44 Poorly studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
UPK 39 is a rich, very dense object of high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is poorly studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Close Moderate extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Wood sample.

Data
🔍 Search references for UPK 39 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 277.475 0.929 2.285 3.265 -8.731 -11.206
Zhang et al. 2024 277.478 1.076 – – – –
Hunt & Reffert 2024 277.478 1.076 2.251 3.271 -8.668 14.747
Cavallo et al. 2024 277.427 0.982 2.253 – – –
Hunt & Reffert 2023 277.478 1.076 2.251 3.271 -8.668 14.747
Qin et al. 2023 277.53 1.04 2.26 3.24 -8.68 -8.0
He et al. 2022 277.519 0.975 2.252 3.255 -8.639 –
Sim et al. 2019 277.485 1.002 – 3.29 -8.65 –

💡 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
Zhang et al. 2024 – – – – 0.037* – – –
Hunt & Reffert 2024 – – – – – 204* – –
Cavallo et al. 2024 0.70 3.27 – 8 -0.100 – – –
Hunt & Reffert 2023 0.42 2.31 2.23 4 – – – –
Qin et al. 2023 1.00 2.08 – 7 – – – –
He et al. 2022 – 0.50 – 2 – – – –
Sim et al. 2019 0.43 – – 3 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14652 57.1 277.5 1.02 2.29 3.03 -8.83 -11.21 0.0

💡 Note: The % column shows the percentage of members that UPK 39 shares with each listed object.

Visualization
ℹī¸
UPK 39 UCC
UPK 39 HUNT23
Galactocentric position diagram