Mare Frigoris
Location: ·
The 'Sea of Cold' — a lava strip stretching over 1,400 km along the Moon's north.
Type
Mare
Diameter
1,446 km
Position
57.6°N 0.0°W
Name approved
1935
Frigoris is the one large near-side mare that does not sit in an impact basin. It is an irregular strip more than 1,400 km long lying along an outer ring of the Procellarum structure, filled where the crust happened to be low rather than where a basin had been excavated.
It follows that it has no mascon. The circular maria all carry a mass excess from mantle uplift beneath the basin; Frigoris, having no basin, carries essentially none, which is the cleanest available test of where mascons come from.
Sunrise
Sunset
Sunrise and sunset on Mare Frigoris
| Event | Time | Lit |
|---|---|---|
| Computing… | ||
- Sunrise / Sunset: at the feature's centre (IAU Gazetteer of Planetary Nomenclature).
- Lit: the illuminated fraction of the Moon's disc at that moment.
Further info
Official record from the IAU Gazetteer of Planetary Nomenclature: Mare Frigoris
Wikipedia: Mare Frigoris