Fletcher system (HR 4285)

RogerBW

1 Interstellar navigation

Destination θ ϕ ρ K
52 Psi Ursae Majoris (Arbuthnot) K1III (United Kingdom) 60 9 10 142
HIP:53756 (Leeuw) K4V (United Kingdom) 0 -64 1.7 346
HIP:54692 (Glushko) F8 (Novaya Europa) 60 74 3.5 239
HIP:55761 (Utkin) F8 (Novaya Europa) 14 10 2.9 261
To → 52 Psi Ursae Majoris (Arbuthnot) HIP:53756 (Leeuw) HIP:54692 (Glushko) HIP:55761 (Utkin)
From ↓ θ ϕ ρ θ ϕ ρ θ ϕ ρ θ ϕ ρ
52 Psi Ursae Majoris (Arbuthnot) 350 -18 10 347 11 9.1 2 -7 8.2
HIP:53756 (Leeuw) 64 18 10 107 80 5 19 43 3
HIP:54692 (Glushko) 60 -11 9.1 34 -80 5 104 -50 3.7
HIP:55761 (Utkin) 75 7 8.2 305 -43 3 177 50 3.7

2 System map

ID # orbit world type size/e mass/e g/e atmosphere hydrographics temp climate day HI RVM Affinity
(a.u.) (10 Mm) (C) (hours)
I 0.24 standard chthonian planet 1.3 2.4 1.3 none 619 infernal infinite -2 1 -1
II 0.45 standard chthonian planet 1.5 2.9 1.3 none 374 infernal infinite -2 0 -2
III 0.77 small rock planet 0.59 0.18 0.53 none 218 infernal 17.9 -2 0 -2
IV 1.5 small rock planet 0.61 0.18 0.49 none 74 infernal 707 -2 0 -2
IVa 23 tiny rock moon 0.32 0.02 0.22 none 78 infernal 707 -1 -1 -2
1.7 jump point Leeuw
V 2.8 standard ocean planet 0.61 0.22 0.61 very thin suffocating 50% water 3 chilly 15.3 -2 1 -1
Va 24 tiny rock moon 0.20 0.01 0.14 none -12 cold 704 -1 0 -1
2.9 jump point Utkin
3.5 jump point Glushko
VI 4.7 tiny rock planet 0.16 0.00 0.13 none -73 frozen 25.0 -1 1 0
8.0 asteroid belt -119 frozen 0 -1 -1
10 jump point Arbuthnot
VII 15 medium gas giant 9.2 150 1.8 superdense corrosive 16.7
6 moonlets -161 frozen 0 0 0
VIIa 94 tiny sulfur moon 0.14 0.00 0.05 none -184 frozen 207 -2 1 -1
VIIb 106 tiny ice moon 0.09 0.00 0.05 none -174 frozen 247 0 0 0
VIIc 121 small ice moon 0.50 0.05 0.20 very dense mildly toxic 70% hydrocarbons -152 frozen 302 -2 -1 -3
VIId 136 tiny ice moon 0.24 0.01 0.12 none -174 frozen 360 -1 1 0
VIIe 156 tiny ice moon 0.33 0.02 0.17 none -174 frozen 439 -1 0 -1
3 moonlets -161 frozen 0 0 0
27 asteroid belt -189 frozen 0 3 3
VIII 46 small gas giant 2.9 10 1.2 superdense corrosive 11.9
10 moonlets -209 frozen 0 1 1
VIIIa 46 small hadean moon 0.26 0.01 0.16 none -229 frozen 275 -1 1 0
5 moonlets -209 frozen 0 0 0

3 Habitation

British colony founded 2349. Human habitation is mostly in space habitats with some developments (in sealed habitats) on planet V and its moon, including construction of an orbiting naval base.

3.1 Planetology

class of star F9 V
mean distance 2.8 a.u.
perihelion 2.6 a.u.
aphelion 2.9 a.u.
axial tilt 36°
annual period 3.66 years
2095.0 local days
local day 15.3 hours
standard ocean planet
diameter 0.61 x Earth’s
7750 km
density 1.0 x Earth’s
5.5 g/cm^3
surface gravity 0.61 g.
6.0 m/s^2
escape velocity 6.8 km/s
vulcanism extreme
tectonics heavy
climate chilly
temperature
average 3 C
perihelion 10 C
aphelion -4 C
illumination 99 % Earth’s
oceans 50%
composition water
tidal range 1.2 m
atmosphere
main gases N2, CO2
traces &c.
class suffocating
pressure 0.43 bar
(very thin)
Population & economy
Habitability -2
Resources abundant RVM 1
Affinity -1
settlement type
carrying capacity 4.6 E+6
Sky Objects
object apparent: size period tides
class (degrees) (hours) (m)
sun: F0 V 0.31 15.3 0.02
Va: tiny rock moon 0.59 15.6 1.2

4 Economy

Extensive mining in the outer asteroid belt.