1495 Helsinki is a main-belt asteroid and orbits within the Eunomia asteroid family. It was discovered on September 21, 1938 by Yrjö Väisälä in Turku. The asteroid is named after the Finnish name for the capital.

https://no.wikipedia.org/wiki/1495_Helsinki

https://no.wikipedia.org/wiki/Storheikkil%C3%A4_observatorium

Yrjö Väisälä was a physicist and astronomer and his research team discovered 807 asteroids and 7 comets.

At the time with no Laptops and planetarium programs (Apps today ), he created an orbit calculation method that avoids solutions of higher-degree equations. (In Gauss's method, the distance from the Earth of, for example a planet is solved with an equation of the 8th degree.) Väisälä completely omits the determination of the distance. His procedure is that one guesses a value of the distance, calculates through his method and get a new better value of the distance. then one can calculates through the method again.
In the third round, a good value for the distance can be found through interpolation.

One arrives at the position of the planet in space at 3 different times, and then the orbit elements can be calculated.

The method is unique in its simplicity.

Ref. Y. Väisälä : Eine einface Methode der Bahnbestimmungen.
Annales academiæ scientiarum Fennicæ. Ser.A. Tom. LII, N:o 2. (1939)

https://en.wikipedia.org/wiki/Yrj%C3%B6_V%C3%A4is%C3%A4l%C3%A4

A lunar crater is also named after him.
https://en.wikipedia.org/wiki/V%C3%A4is%C3%A4l%C3%A4_(crater)

Some nearby stars reveal themselves by their proper motion over a period of time from approximately 1955 to the present day.

Distance from the Sun (au) : 3.011

Time: 19:01UT 2026-03-05 Exp. 13 x 30 sec.
Tel. 0.254m f/5.8 ST-10XME CCD @ -25°C 1.9"/pix
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.