@planetmaker I see.

The equatorial surface gravity is 9.78 m/s² (0.997g) while the polar is 9.832 m/s² (1.003g), so the difference between pole and equator is plus/minus 0.003g in reference to average.

And your mention of a decreased gravity concerning Bennu is pointless because I'm asking on the gravity of Bennu itself, not how the Earth's local gravity changes.

...and this gravity difference is called a mascon (mass concentration) which also seems to be more than several cavendishes. Here's a map showing the differences in mascons: thumbs-prod.si-cdn.com/70gjnV4C2bY6VUgVj2OHyVLvGkg=/800x600/‌​…

I have some questions on your answer: First, you say the Sun and the Moon have similar tidal forces, but why are ocean tides caused by the Moon only then? 2nd, when riding an elevator the change of gravity are multiple hundredths of Gs. I once measured the gravity when riding an elevator, the change was about plus/minus 0.08 Gs. So when you start to ride down (or arrive up) in the lift you experience 0.92g while when starting to ride up (or arriving down) you experience 1.08g. I don't know an elevator where the difference would be several cavendishes. Third, you mention the mountains' mass...

@userLTK I'm indeed asking on the denser more metallic meteorites.

@planetmaker I think you'd recognize a meteorite especially by the crater around it. :-)

Oh what a pity! I didn't even know that it collapsed! This makes me sad; it's Ellie's observatory from the film 'Contact'. And it could perhaps have discovered Planet IX. Hopefully they'll get it back usable again.

@planetmaker But aren't there many meteorites that are much more massive and denser than terrestrial rocks? Afaik meteorites are unusually heavy.

@planetmaker Because I wonder about the environmental influence. Imagine a meteorite comes down in a desert. I wonder whether it can have enough gravity to noticeably attract or shift sand corns.

@NilayGhosh Of course everything with mass has gravity. The question is whether this meteorite's gravity would be noticeable, such as attracting things nearby.

My question is either about meteoroids that make it down to Earth's surface, or about the fragments you mention. Bennu's surface gravity is 6 micro-g. Would that gravity remain if Bennu impacted the Earth, and if so, would its attraction be noticeable to everyone nearby?

@ConnorGarcia I think I'm too much of a greenhorn for an answer to give in this matter. Better an expert in Greek should provide a detailed answer. :-)

Peri- and Apoapsis are universal. "Astron" in turn would mean "star" so only to use for Peri-/Apoapses around stars.

@fasterthanlight Just because it's a duplicate doesn't give a reason to downvote it.

Just my impression. Many planets have CO2 atmospheres anyway and these are per se orange-ish (such as Mars' and Venus' one).

This proves my impression: the planets around weak red dwarfs (as well as those close enough around brown dwarfs) seem to have red-to-yellow atmospheres regardless of their composition.