Star system
BD+21 55
Economy
Agriculture / Industrial
Government
Corporate
Allegiance
Independent
Star type
Class K star Scoopable
Coordinates
-75.53 / -70.53 / -39.28
Permit required
No
︎ BD+21 55 A - Class K star
Body distance-Solar masses0.7500Solar radius0.8548︎ BD+21 55 A 1 - Earth-like world
Body distance413 LsEarth masses1.7967Radius7,228 kmGravity1.40 gSurface temperature279 K (6°C/43°F)Surface pressure2.30 atmVolcanismMinor Metallic magmaAtmosphereSuitable for water-based lifeTerraformingTerraformed︎ BD+21 55 A 2 - Water world
Body distance512 LsEarth masses2.0864Radius7,516 kmGravity1.50 gSurface temperature331 K (58°C/136°F)Surface pressure12.73 atmVolcanismMinor Metallic magmaAtmosphereThick AmmoniaTerraforming︎ BD+21 55 A 2 a - Rocky body Landable
Body distance513 LsEarth masses0.1444Radius3,523 kmGravity0.47 gSurface temperature217 K (-57°C/-70°F)Surface pressure0.01 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Ruthenium: 1.3%︎ Selenium: 2.9%︎ Niobium: 1.4%︎ Tin: 1.3%︎ Manganese: 8.5%︎ Vanadium: 5.0%︎ Carbon: 15.4%︎ Iron: 20.5%︎ Nickel: 15.5%︎ Phosphorus: 9.9%︎ Sulphur: 18.4%︎ BD+21 55 A 3 - High metal content world
Body distance736 LsEarth masses1.9646Radius7,401 kmGravity1.46 gSurface temperature483 K (210°C/410°F)Surface pressure30.43 atmVolcanismMinor Metallic magmaAtmosphereThick Methane-richTerraforming︎ BD+21 55 A 3 a - Rocky body Landable
Body distance734 LsEarth masses0.0733Radius2,836 kmGravity0.37 gSurface temperature182 K (-91°C/-132°F)Surface pressure0.01 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Antimony: 1.2%︎ Selenium: 2.9%︎ Mercury: 0.9%︎ Tin: 1.3%︎ Chromium: 9.5%︎ Zirconium: 2.4%︎ Carbon: 15.8%︎ Iron: 21.0%︎ Nickel: 15.9%︎ Phosphorus: 10.1%︎ Sulphur: 18.8%︎ BD+21 55 A 4 - Class I gas giant
Body distance2,224 LsRing/belt typeMetal rich (Pristine)Earth masses78.8581Radius57,132 kmGravity0.98 gSurface temperature115 K (-158°C/-252°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 A 4 d - Icy body Landable
Body distance2,217 LsEarth masses0.0017Radius1,050 kmGravity0.06 gSurface temperature98 K (-175°C/-283°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Selenium: 4.2%︎ Mercury: 0.5%︎ Niobium: 0.8%︎ Chromium: 5.1%︎ Manganese: 4.7%︎ Carbon: 22.6%︎ Iron: 11.4%︎ Nickel: 8.6%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%︎ BD+21 55 A 4 b - Icy body Landable
Body distance2,223 LsEarth masses0.0010Radius887 kmGravity0.05 gSurface temperature99 K (-174°C/-282°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Cadmium: 0.9%︎ Tin: 0.7%︎ Chromium: 5.4%︎ Germanium: 3.5%︎ Manganese: 5.0%︎ Carbon: 22.1%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.1%︎ Sulphur: 26.3%︎ BD+21 55 A 4 a - Rocky body Landable
Body distance2,225 LsEarth masses0.0002Radius405 kmGravity0.05 gSurface temperature112 K (-161°C/-259°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.4%︎ Niobium: 1.3%︎ Tin: 1.1%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.1%︎ Iron: 18.4%︎ Nickel: 13.9%︎ Phosphorus: 9.7%︎ Sulphur: 18.0%︎ BD+21 55 A 4 c - Icy body Landable
Body distance2,231 LsEarth masses0.0018Radius1,074 kmGravity0.06 gSurface temperature98 K (-175°C/-282°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.7%︎ Niobium: 0.8%︎ Tungsten: 0.6%︎ Chromium: 5.2%︎ Germanium: 3.3%︎ Manganese: 4.7%︎ Carbon: 22.8%︎ Iron: 11.5%︎ Nickel: 8.7%︎ Phosphorus: 14.6%︎ Sulphur: 27.1%︎ BD+21 55 A 5 - Class I gas giant
Body distance3,034 LsEarth masses65.6290Radius51,601 kmGravity1.00 gSurface temperature103 K (-170°C/-275°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 A 5 e - Icy body Landable
Body distance3,017 LsEarth masses0.0009Radius861 kmGravity0.05 gSurface temperature88 K (-185°C/-301°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.8%︎ Cadmium: 0.9%︎ Tungsten: 0.7%︎ Chromium: 5.5%︎ Germanium: 3.5%︎ Zinc: 3.3%︎ Carbon: 22.6%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%︎ BD+21 55 A 5 a - Icy body Landable
Body distance3,031 LsEarth masses0.0004Radius640 kmGravity0.04 gSurface temperature89 K (-184°C/-300°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.8%︎ Cadmium: 1.0%︎ Tungsten: 0.7%︎ Chromium: 5.5%︎ Germanium: 3.6%︎ Zirconium: 1.4%︎ Carbon: 23.1%︎ Iron: 12.3%︎ Nickel: 9.3%︎ Phosphorus: 14.8%︎ Sulphur: 27.5%︎ BD+21 55 A 5 c - Icy body Landable
Body distance3,037 LsEarth masses0.0002Radius506 kmGravity0.03 gSurface temperature89 K (-185°C/-300°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.2%︎ Technetium: 0.4%︎ Niobium: 0.8%︎ Tin: 0.7%︎ Chromium: 5.4%︎ Vanadium: 3.0%︎ Carbon: 22.7%︎ Iron: 12.1%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 27.0%︎ BD+21 55 A 5 f - Icy body Landable
Body distance3,038 LsEarth masses0.0004Radius627 kmGravity0.04 gSurface temperature88 K (-185°C/-301°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Mercury: 0.5%︎ Niobium: 0.8%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 22.9%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%︎ BD+21 55 A 5 b - Icy body Landable
Body distance3,039 LsEarth masses0.0004Radius655 kmGravity0.04 gSurface temperature89 K (-184°C/-300°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.3%︎ Technetium: 0.4%︎ Cadmium: 1.0%︎ Mercury: 0.5%︎ Vanadium: 3.0%︎ Zinc: 3.4%︎ Carbon: 23.2%︎ Iron: 12.4%︎ Nickel: 9.4%︎ Phosphorus: 14.8%︎ Sulphur: 27.6%︎ BD+21 55 A 5 d - Icy body Landable
Body distance3,039 LsEarth masses0.0006Radius752 kmGravity0.04 gSurface temperature88 K (-185°C/-300°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.3%︎ Yttrium: 0.7%︎ Niobium: 0.8%︎ Tungsten: 0.7%︎ Manganese: 5.1%︎ Zirconium: 1.4%︎ Carbon: 23.0%︎ Iron: 12.4%︎ Nickel: 9.4%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%︎ BD+21 55 B - Class K star
Body distance26,301 LsSolar masses0.6445Solar radius0.8154︎ BD+21 55 C - Class K star
Body distance105,242 LsSolar masses0.5508Solar radius0.6723︎ BD+21 55 C 3 - Class I gas giant
Body distance104,353 LsRing/belt typeIcy (Pristine)
Rocky (Pristine)Earth masses106.8270Radius58,864 kmGravity1.25 gSurface temperature94 K (-179°C/-290°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 C 3 b - Icy body Landable
Body distance104,936 LsEarth masses0.0016Radius1,031 kmGravity0.06 gSurface temperature77 K (-197°C/-322°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Cadmium: 0.9%︎ Mercury: 0.5%︎ Chromium: 5.5%︎ Germanium: 3.5%︎ Vanadium: 3.0%︎ Carbon: 22.7%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.6%︎ Sulphur: 27.0%︎ BD+21 55 C 3 a - Icy body Landable
Body distance108,125 LsEarth masses0.0020Radius1,109 kmGravity0.07 gSurface temperature78 K (-195°C/-319°F)Surface pressure0.00 atmVolcanismMajor Water geysersAtmosphereTerraforming︎ Selenium: 4.2%︎ Technetium: 0.4%︎ Tin: 0.7%︎ Tungsten: 0.7%︎ Chromium: 5.4%︎ Germanium: 3.5%︎ Carbon: 22.6%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%︎ BD+21 55 C 2 - Class I gas giant
Body distance104,455 LsRing/belt typeMetal rich (Pristine)Earth masses4.9855Radius22,884 kmGravity0.39 gSurface temperature116 K (-158°C/-252°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 C 2 a - Rocky body Landable
Body distance104,223 LsEarth masses0.0002Radius429 kmGravity0.05 gSurface temperature117 K (-156°C/-249°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Cadmium: 1.5%︎ Niobium: 1.3%︎ Chromium: 8.5%︎ Germanium: 5.5%︎ Zinc: 5.1%︎ Carbon: 15.5%︎ Iron: 18.8%︎ Nickel: 14.3%︎ Phosphorus: 9.9%︎ Sulphur: 18.5%︎ BD+21 55 C 4 - Class I gas giant
Body distance106,478 LsRing/belt typeIcy (Pristine)
Metal rich (Pristine)Earth masses143.0430Radius59,319 kmGravity1.65 gSurface temperature91 K (-182°C/-295°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 C 4 e - Icy body
Body distance105,909 LsEarth masses0.0029Radius1,253 kmGravity0.08 gSurface temperature117 K (-156°C/-249°F)Surface pressure0.27 atmVolcanismAtmosphereMethaneTerraforming︎ BD+21 55 C 4 a - Icy body
Body distance105,917 LsEarth masses0.0004Radius646 kmGravity0.04 gSurface temperature175 K (-98°C/-145°F)Surface pressure6.88 atmVolcanismCarbon dioxide geysersAtmosphereThick MethaneTerraforming︎ BD+21 55 C 4 d - Icy body Landable
Body distance105,919 LsEarth masses0.0006Radius747 kmGravity0.04 gSurface temperature105 K (-168°C/-270°F)Surface pressure0.09 atmVolcanismAtmosphereThin MethaneTerraforming︎ Antimony: 0.7%︎ Selenium: 4.2%︎ Niobium: 0.8%︎ Tungsten: 0.7%︎ Manganese: 5.0%︎ Zinc: 3.3%︎ Carbon: 22.6%︎ Iron: 12.1%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%︎ BD+21 55 C 4 f - Icy body
Body distance106,466 LsEarth masses0.0012Radius944 kmGravity0.06 gSurface temperature109 K (-164°C/-263°F)Surface pressure0.15 atmVolcanismAtmosphereMethaneTerraforming︎ BD+21 55 C 4 c - Icy body
Body distance108,726 LsEarth masses0.0009Radius858 kmGravity0.05 gSurface temperature109 K (-164°C/-264°F)Surface pressure0.12 atmVolcanismAtmosphereMethaneTerraforming︎ BD+21 55 C 4 b - Icy body
Body distance108,728 LsEarth masses0.0004Radius659 kmGravity0.04 gSurface temperature172 K (-101°C/-150°F)Surface pressure6.24 atmVolcanismAtmosphereThick MethaneTerraforming︎ BD+21 55 C 1 - Class II gas giant
Body distance107,147 LsRing/belt typeRocky (Pristine)Earth masses478.7650Radius74,229 kmGravity3.53 gSurface temperature178 K (-95°C/-139°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 C 5 - Class I gas giant
Body distance108,917 LsEarth masses24.2712Radius21,716 kmGravity2.09 gSurface temperature69 K (-204°C/-336°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ BD+21 55 C 5 d - Icy body Landable
Body distance105,707 LsEarth masses0.0003Radius618 kmGravity0.04 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.3%︎ Cadmium: 0.9%︎ Mercury: 0.5%︎ Chromium: 5.4%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Carbon: 22.5%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.4%︎ Sulphur: 26.8%︎ BD+21 55 C 5 e - Icy body Landable
Body distance106,189 LsEarth masses0.0006Radius756 kmGravity0.04 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.2%︎ Yttrium: 0.7%︎ Molybdenum: 0.8%︎ Niobium: 0.8%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Carbon: 22.7%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.5%︎ Sulphur: 27.0%︎ BD+21 55 C 5 c - Icy body Landable
Body distance106,197 LsEarth masses0.0003Radius564 kmGravity0.03 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Molybdenum: 0.8%︎ Niobium: 0.8%︎ Chromium: 5.5%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 22.8%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.6%︎ Sulphur: 27.1%︎ BD+21 55 C 5 f - Icy body Landable
Body distance106,503 LsEarth masses0.0009Radius866 kmGravity0.05 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.8%︎ Molybdenum: 0.8%︎ Tin: 0.8%︎ Arsenic: 1.6%︎ Germanium: 3.7%︎ Vanadium: 3.1%︎ Carbon: 23.7%︎ Iron: 12.6%︎ Nickel: 9.6%︎ Phosphorus: 15.2%︎ Sulphur: 28.2%︎ BD+21 55 C 5 g - Icy body Landable
Body distance108,888 LsEarth masses0.0009Radius858 kmGravity0.05 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.2%︎ Technetium: 0.4%︎ Mercury: 0.5%︎ Molybdenum: 0.8%︎ Chromium: 5.5%︎ Vanadium: 3.0%︎ Carbon: 22.7%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.5%︎ Sulphur: 27.0%︎ BD+21 55 C 5 a - Icy body Landable
Body distance108,918 LsEarth masses0.0002Radius544 kmGravity0.03 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Mercury: 0.5%︎ Tin: 0.7%︎ Chromium: 5.5%︎ Manganese: 5.0%︎ Zirconium: 1.4%︎ Carbon: 22.8%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.6%︎ Sulphur: 27.1%︎ BD+21 55 C 5 b - Icy body Landable
Body distance108,918 LsEarth masses0.0005Radius716 kmGravity0.04 gSurface temperature61 K (-212°C/-350°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.7%︎ Selenium: 4.2%︎ Cadmium: 0.9%︎ Niobium: 0.8%︎ Manganese: 5.0%︎ Zinc: 3.3%︎ Carbon: 22.5%︎ Iron: 12.1%︎ Nickel: 9.1%︎ Phosphorus: 14.4%︎ Sulphur: 26.8%