How big is Phaethon?

We put Phaethon in con­text, by com­par­ing its size to some well-known ob­jects – both ter­res­trial and ce­les­tial

Sky at Night Magazine - - AT A GLANCE -

1. Phaethon – 6km (di­am­e­ter) 2. Bennu – as­ter­oid cur­rently be­ing in­ves­ti­gated by NASA’s OSIRIS-REx sam­ple-re­turn mis­sion: 500m (di­am­e­ter)

3. The Shard – the tallest build­ing in the UK, over­look­ing the River Thames: 309.6m (height)

4. The Lon­don Eye – gi­ant fer­ris wheel sit­u­ated on Lon­don’s South Bank: 135m (height)

5. Comet 67P – icy body vis­ited by ESA’s Rosetta mis­sion: 4.34km (long­est side)

6. Ceres – dwarf planet lurk­ing in the main as­ter­oid belt be­tween Mars and Jupiter: 945km (di­am­e­ter)

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