Star system
HR 4803
Economy
Agriculture / Industrial
Government
Corporate
Allegiance
Independent
Star type
Class F star Scoopable
Coordinates
79.09 / 64.84 / 45.5
Permit required
No
︎ HR 4803 A - Class F star
Body distance-Solar masses1.7227Solar radius1.4228︎ HR 4803 A 1 - Metal-rich body Landable
Body distance72 LsEarth masses0.0303Radius1,634 kmGravity0.46 gSurface temperature1,208 K (935°C/1,715°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 1.2%︎ Cadmium: 2.7%︎ Molybdenum: 2.3%︎ Manganese: 14.4%︎ Vanadium: 8.6%︎ Zinc: 9.5%︎ Iron: 34.9%︎ Nickel: 26.4%︎ HR 4803 A 2 - Metal-rich body Landable
Body distance90 LsEarth masses0.0231Radius1,495 kmGravity0.42 gSurface temperature1,088 K (814°C/1,498°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Mercury: 1.4%︎ Molybdenum: 2.2%︎ Chromium: 14.8%︎ Manganese: 13.6%︎ Zinc: 8.9%︎ Iron: 32.9%︎ Nickel: 24.9%︎ HR 4803 B - Class K star
Body distance547 LsSolar masses0.5430Solar radius0.6965︎ HR 4803 C - Class L star (brown dwarf)
Body distance554 LsSolar masses0.1641Solar radius0.3427︎ HR 4803 ABC 1 - High metal content world
Body distance1,395 LsEarth masses5.0722Radius9,610 kmGravity2.23 gSurface temperature1,265 K (992°C/1,818°F)Surface pressure1,182.40 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick Carbon dioxideTerraforming︎ HR 4803 ABC 1 a - Earth-like world
Body distance1,452 LsEarth masses0.2870Radius4,372 kmGravity0.61 gSurface temperature317 K (44°C/112°F)Surface pressure1.25 atmVolcanismAtmosphereSuitable for water-based lifeTerraformingTerraformed︎ HR 4803 D - Class M star
Body distance9,493 LsSolar masses0.5313Solar radius0.6637︎ HR 4803 D 4 - High metal content world
Body distance8,740 LsEarth masses1.4343Radius6,785 kmGravity1.27 gSurface temperature229 K (-44°C/-47°F)Surface pressure20.45 atmVolcanismMinor Silicate vapour geysersAtmosphereThick Argon-richTerraforming︎ HR 4803 D 3 - High metal content world
Body distance9,688 LsEarth masses0.9514Radius5,983 kmGravity1.08 gSurface temperature749 K (476°C/889°F)Surface pressure163.66 atmVolcanismMajor Rocky magmaAtmosphereHot Thick Carbon dioxideTerraformingTerraformable︎ HR 4803 D 3 a - Rocky body Landable
Body distance9,122 LsEarth masses0.0165Radius1,748 kmGravity0.22 gSurface temperature244 K (-29°C/-20°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.3%︎ Cadmium: 1.6%︎ Tin: 1.3%︎ Germanium: 5.4%︎ Manganese: 8.5%︎ Zirconium: 2.4%︎ Carbon: 15.3%︎ Iron: 20.6%︎ Nickel: 15.6%︎ Phosphorus: 9.8%︎ Sulphur: 18.2%︎ HR 4803 D 2 - High metal content world
Body distance9,722 LsEarth masses0.1630Radius3,475 kmGravity0.55 gSurface temperature295 K (21°C/71°F)Surface pressure0.17 atmVolcanismAtmosphereNitrogenTerraformingTerraforming︎ HR 4803 D 1 - High metal content world
Body distance9,737 LsEarth masses0.2791Radius4,115 kmGravity0.67 gSurface temperature350 K (77°C/171°F)Surface pressure0.49 atmVolcanismAtmosphereSulphur dioxideTerraforming