List of regions on Io

This is a list of named regions on Jupiter's moon Io. These names have been approved for use by the International Astronomical Union. The features listed below represent a subset of the total known bright regions on Io's surface with many currently not having an officially approved name. These areas are large-scale regions on Io's surface that are notable for their difference in brightness or color from their surroundings. In most cases, these areas are bright terrains, consisting of sulfur dioxide frost/ice fields, suggesting that they are colder than their surroundings.[1]

The names of regions on Io use a combination of a name derived from locations in Greek mythology associated with the nymph Io or Dante's Inferno, or from the name of a nearby feature on Io's surface and the descriptor term, regio, Latin for region. Coordinate, diameter, and name source below come from the IAU's Solar System Nomenclature Website.[2]

See also the list of mountains on Io and the list of volcanic features on Io.

Map of Io's surface with named regions labeled
RegioNamed afterCoordinatesSize
Bactria RegioBactria47°36′S 123°46′W / 47.6°S 123.77°W / -47.6; -123.77 (Bactria Regio)665.68 km
Bosphorus RegioBosphorus1°35′S 120°30′W / 1.58°S 120.5°W / -1.58; -120.5 (Bosphorus Regio)1,615.15 km
Bulicame RegioBulicame (The Divine Comedy)34°51′N 190°49′W / 34.85°N 190.82°W / 34.85; -190.82 (Bulicame Regio)498.0 km
Chalybes RegioChalybes57°30′N 86°13′W / 57.5°N 86.21°W / 57.5; -86.21 (Chalybes Regio)760.56 km
Colchis RegioColchis1°38′N 205°01′W / 1.63°N 205.01°W / 1.63; -205.01 (Colchis Regio)2,373.09 km
Illyrikon RegioIllyria69°51′S 169°02′W / 69.85°S 169.04°W / -69.85; -169.04 (Illyrikon Regio)750.0 km
Lerna RegioLerna62°21′S 291°52′W / 62.35°S 291.86°W / -62.35; -291.86 (Lerna Regio)581.26 km
Media RegioMedia8°39′N 59°26′W / 8.65°N 59.43°W / 8.65; -59.43 (Media Regio)2,654.02 km
Mycenae RegioMycenae36°04′S 165°23′W / 36.07°S 165.39°W / -36.07; -165.39 (Mycenae Regio)600.16 km
Tarsus RegioTarsus39°41′S 55°08′W / 39.69°S 55.14°W / -39.69; -55.14 (Tarsus Regio)1,520.93 km

Other regions on Io

RegionNamed afterCoordinatesSize
Chaac-Camaxtli RegionChaac Camaxtli12°30′N 145°00′W / 12.5°N 145°W / 12.5; -145 (Chaac-Camaxtli Region)

References

  1. ↑ Williams, D. A.; et al. (2010). Volcanism on Io: Results from Global Geologic Mapping (PDF). LPSC XLI. The Woodlands (Greater Houston). Abstract #1351.
  2. ↑ Blue, Jennifer. "Io Nomenclature: Regio, regiones". USGS. Retrieved 2010-01-27.
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