Janssen

Origin of the name

Pierre Jules César; French astronomer (1824-1907).

When to observe it

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Nearby

• Rimae Janssen 42 km
• Fabricius 71 km
• Lockyer 98 km
• Metius 149 km
• Steinheil 166 km
• Brenner 182 km
• Dove 206 km
• Watt 211 km