The effects of a minmus analogue on earth?

[WhiteWeasel]

What effect would a 60 x 10 km (600 km) moon much further out than the normal moon on an inclined orbit around earth? And to stop the pointless "Minmus is not made of ice" dren, we'll assume it's rocky or metalloid. Same applies to color, either grey or brown realistically speaking, and i'm not sure if other colors exist. (do reddish moons, like a mini mars exist?). Seems like physics at first, but I'm also pondering what repercussions it would have had on astronomy and society and their space programs.

For the physics part, I read that only the inner 1/3 to 1/2 of a celestial bodies' hill sphere is stable, and the earth minmus would likely be kicked out. For fun, I will omit that and assume it's stable.

Here is a ref chart with enceladus at 500 km in diameter, close enough to get a good scale of how big real minmus would be to the moon:

[MC.STEEL]

By a hardly scientific,non calculated and heavily biased estimate i deduct that the effects would be negligible at best.Our planetary neighbours act on us but the effect is almost nonexistent so why should Minmus counterpart be different.

Culturally wise there would be a bigger difference of having an object brighter than Venus in the sky (again did not calculate) and another body for near future exploration to take place.This could even extend the space race of the cold war era (probably).

[Red Iron Crown]

I think it could kickstart industry in space by effectively being an asteroid that doesn't require towing to Earth. All those raw materials, already out of the deep end of Earth's gravity well...

As for the physical effects on Earth, I suppose it might affect the tides, depending on its mass and distance.

Culturally, our calendar might look a bit different, given that months were originally based on lunar cycles. If its orbital period were an integer divisor of the Earth year, we might have avoided thousands of years of bad calendars.