title: Lockyer (lunar crater)
text: # Lockyer (lunar crater)
  
  Lockyer is a lunar impact crater that is located along the western wall of the large walled plain Janssen. It was named after British astrophysicist Norman Lockyer. This crater is roughly circular with a slight outward bulge along the eastern side. The edge of the rim is only lightly eroded, with an indentation in the side to the north-northwest. The interior floor is relatively featureless, except for a small crater along the edge of the southern inner wall.
  
  ## Satellite craters
  
  By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Lockyer.
  
  | Lockyer | Latitude | Longitude | Diameter |
  | - | - | - | - |
  | A | 44.0° S | 31.0° E | 10 km |
  | F | 47.5° S | 36.5° E | 20 km |
  | G | 45.7° S | 33.3° E | 24 km |
  | H | 44.5° S | 32.5° E | 31 km |
  | J | 45.0° S | 32.3° E | 13 km |
  