Image-field position and adopted distance
Westerlund 2 image-field center is placed at J2000 RA 10.4 h, Dec -57.8° in Carina, at an adopted distance of 20,000 light-years.
Also known as Wd 2, Gum 29, RCW 49.
One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.
Westerlund 2 image-field center is placed at J2000 RA 10.4 h, Dec -57.8° in Carina, at an adopted distance of 20,000 light-years.
Westerlund 2 (star-forming emission nebula; central source Westerlund 2, embedded stellar population): projected footprint at the adopted distance 43.3 × 32.4 light-years; outer radius used for arrival 21.6 light-years.
Hubble optical and near-infrared exposures reveal Westerlund 2 within the larger Gum 29 / RCW 49 region. This field is a close panorama, not the entire complex. Projected structure follows the credited observation at its published angular scale and an approximate adopted distance. Shallow depth is illustrative, not measured tomography. The source palette is preserved; brightness is adjusted for the navigable view.