2014un271

Scientists have spent the last few years tracking a curious space rock called 2014 UN271, which is a little too big to be a comet and a little too small to be a planet (a TNO or Trans-Neptunian Object), as it careens through the solar system.

https://futurism.com/the-byte/tiny-planet-earth

Currently, 2014 UN271 is about 22 Astronomical Units (AU) from the Sun (for reference, Earth is 1 AU from the Sun). After its close pass, 2014 UN271 will then hurtle back out into the inky blackness, on a several-hundred millennia return trip to the Oort cloud, and an incredible peak distance of almost 60,000 AU. The closest approach to earth (10.9 AU) will be in Dec 2030 and Jan 2031.

https://en.wikipedia.org/wiki/2014_UN271

Whatever it is, in 2031, the planetoid (the best way to describe it) which has no name at this time, will be as close to the Sun as the average distance of Saturn , the farthest naked eye planet in our solar system.

Ephemeris of 2014UN271 (currently in 2h 35m-Aries as of 21 June 2021 - it'll be in 2h 40m as of 21 July, that's on average moving in every 5m per month).

https://ssd.jpl.nasa.gov/horizons.cgi#results

2021-Aug-01 00:00 5.2913386 -62.6450123 2021-Aug-02 00:00 5.2286015 -62.6928503 2021-Aug-03 00:00 5.1641024 -62.7402892 2021-Aug-04 00:00 5.0978482 -62.7873146 2021-Aug-05 00:00 5.0298456 -62.8339121 2021-Aug-06 00:00 4.9601014 -62.8800673 2021-Aug-07 00:00 4.8886230 -62.9257659 2021-Aug-08 00:00 4.8154188 -62.9709934 2021-Aug-09 00:00 4.7404997 -63.0157356 2021-Aug-10 00:00 4.6638799 -63.0599783 2021-Aug-11 00:00 4.5855782 -63.1037076 2021-Aug-12 00:00 4.5056177 -63.1469098 2021-Aug-13 00:00 4.4240251 -63.1895716 2021-Aug-14 00:00 4.3408294 -63.2316799 2021-Aug-15 00:00 4.2560593 -63.2732222
It's at 4° aries