Mount Marilyn

Feature Profile & Selenographic Data

Feature type

landing

Coordinates

1.13° N · 40.00° E

Diameter

30 km

IAU approval

2017/07/26 00:00:00

LAC quadrangle

LAC-61 · Taruntius

Geological Chronicle

Mount Marilyn, also designated Secchi theta, is a lunar mountain within the Montes Secchi range that separates Mare Fecunditatis to the east from Mare Tranquillitatis to the west. Astronaut Jim Lovell named the feature for his wife, Marilyn, around the time of the Apollo 8 mission in 1968.

The designation remained informal until the International Astronomical Union officially recognized the name on July 26, 2017.

The mountain spans a diameter of 30 kilometers at selenographic coordinates 1.13°N, 40.0°E. Secchi O crater lies at the north tip of Mount Marilyn, while the small crater unofficially known as Weatherford sits just west of the north tip.

Chronology & Exploration

1. 1968 Informal astronaut designation

   Jim Lovell names the mountain for his wife during the Apollo 8 mission era.

2. 2017 Official IAU adoption

   The International Astronomical Union officially recognizes the name Mount Marilyn on July 26.

Scientific Sources & References

• IAU Gazetteer of Planetary Nomenclature — Official name, feature type, coordinates, dimensions, approval and name origin.
• Wikipedia — English Wikipedia revision 1361338954

Name Origin

Astronaut named feature, Apollo 11 site.