At about 18m (60ft) wide, the asteroid 2014 RC is about 40,000km (25,000 miles) away, and posed no danger to Earth.
However, experts said a meteorite that exploded near the Nicaraguan capital Managua on Sunday could have broken off the asteroid. After the earth tremor it caused, a crater 12m (39ft) across and 5m deep opened up near the city's airport.
In February 2013, a meteorite of a similar size exploded over Chelyabinsk in Central Russia, injuring more than 1,000 people.
Right at this moment, Nasa is tracking more than 11,000 asteroids in orbits that pass close to Earth.
You'd think the population would pull together. But no. Apart from the planet's danger from flying space objects, the population is fighting amongst themselves.
Some of the headlines today:
- Iraqi government forces report they have cleared Islamic State militants from an area around the Haditha dam, as the US widens its use of air strikes.
- There has been fresh shelling near Donetsk airport, but European observers say the fighting is not sufficient to make Ukraine's ceasefire collapse.
- Yemeni police have deployed water cannon and tear gas to shift thousands of Shia protesters, who had built camps on the road to Sanaa airport.
I am ashamed to admit not knowing where some of these countries are without looking at a map. I, sitting in my convenient study, with the assurance of help if needed, with the meager means to support myself on the old-age pension, with a computer to contact other people around the world at the flick of a power switch.
Spare a thought for all the countries under duress at this very moment. The ordinary citizens once lived normal, safe lives. Now, many have left their home behind to flee to overcrowded refugee camps without proper sanitation. The children are growing up with no constancy in their lives.
After a gray dawn, the mist will lift to reveal a new day. What will influence your perception?