It is a very dark asteroid and it was discovered by Johann Palisa on January 28, 1875, and named after the city of Pola (now Pula, Croatia), home of the Austrian Naval Observatory where he made the discovery.

https://en.wikipedia.org/wiki/142_Polana

Johann Palisa (6 December 1848 – 2 May 1925) was an Austrian astronomer born in Troppau, Austrian Silesia, now Czech Republic.
He is the most successful visual (non-photographic) asteroid discoverer of all time. The asteroid 914 Palisana and the lunar crater Palisa are named in his honour.

https://en.wikipedia.org/wiki/Johann_Palisa

Distance from the Sun (au) : 2,10

Time: 21:25UT 2026-05-17 Exp. 15 x 5sec.
Tel. 0.254m f/5.8 ST-10XME CCD @ -21°C 1.9"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.