What the 2 GPU kernels do

1. parse_convert_to_cartesian -- parses equatorial coordinate data out of string (scraped from wikipedia using getdata.py) and converts it to equatorial coordinates in radians. Then converts from equatorial to cartesian coordinate system.
2. calculate_distances -- calculates the distance in the cartesian coordinate system.

Install

1. Create command line xcode project
2. Add Metal and Foundation to your build
3. Download metal-cpp -- https://github.com/bkaradzic/metal-cpp
4. add metal-cpp/ to header search path

Data Collection

Python script with nested requests to scrape data from each galaxy linked on this list https://en.wikipedia.org/wiki/List_of_nearest_galaxies

Project Precursor

CUDA implementation -- https://github.com/Tyler-Hilbert/SpaceTripPlanner

Example Output

Original data:
Milky Way 17h 45m 40.03599s −29° 00′ 28.1699″ 26.438
Canis Major Dwarf 07h 12m 35.0s −27° 40′ 00″ 25
Segue 1 10h 07m 04s 16° 04′ 55″ 75
Sagittarius Dwarf Sphr SagDEG 18h 55m 19.5s −30° 32′ 43″ 65
Ursa Major II Dwarf 08h 51m 30.0s +63° 07′ 48″ 98
Triangulum II 02h 13m 17.4s +36° 10′ 42.4″ 97.8
Reticulum II 03h 35m 42.14s −54° 2′ 57.1″ 103
Segue 2 02h 19m 16s +20° 10′ 31″ 114
Willman 1 10h 49m 22.3s +51° 03′ 03.6″ 124
Boötes II 13h 58m 00s +12° 51′ 00″ 136
Coma Berenices Dwarf 12h 26m 59s +23° 55′ 09″ 143
Boötes III 13h 57m 00s +26° 48′ 00″ 150
Large Magellanic Cloud (LMC) 05h 23m 34s −69° 45.4′ 163
Boötes I 14h 00m 06s +14° 30′ 00″ ± 15″ 197
Small Magellanic Cloud (SMC NGC 292) 00h 52m 44.8s −72° 49′ 43″ 203.7
Ursa Minor Dwarf 15h 09m 08.5s +67° 13′ 21″ 200
Draco Dwarf (DDO 208) 17h 20m 12.4s +57° 54′ 55″ 260
Pisces Overdensity 23h 19m 00s +00° 00′ 00″ 260
Sextans Dwarf Sph 10h 13m 02.9s −01° 36′ 53″ 290
Sculptor Dwarf (ESO 351-G30) 01h 00m 09.3s −33° 42′ 33″ 290
Virgo I 12h 00m 09.6s −00° 40′ 48″ 280
Ursa Major I Dwarf (UMa I dSph) 10h 34m 52.8s +51° 55′ 12″ 330
Carina Dwarf (ESO 206-G220) 06h 41m 36.7s −50° 57′ 58″ 330
Crater II 11h 49m 14.400s177.310°±0.03° −18° 24′ 46.80″−18.413°±0.03° 383
Antlia 2 9h 35m 32.832s -36° -46m -2.28s 405
Hercules Dwarf 16h 31m 02s +12° 47′ 30″ 479
Fornax Dwarf (ESO 356-G04) 02h 39m 59.3s −34° 26′ 57″ 466
Canes Venatici II Dwarf 12h 57m 10s +34° 19′ 15″ 490
Leo IV Dwarf 11h 32m 57s −00° 32′ 00″ 520
Leo V Dwarf 11h 31m 9.6s +02° 13′ 12″ 585
Pisces II 22h 58m 31s +05° 57′ 09″ 585
Leo II Dwarf (Leo B DDO 93) 11h 13m 29.2s +22° 09′ 17″ 690
Canes Venatici I Dwarf 13h 28m 03.5s +33° 33′ 21″ 711
Leo I Dwarf (DDO 74 UGC 5470) 10h 08m 27.4s +12° 18′ 27″ 820
Eridanus II 03h 44m 20.1s (Crnojević et al. 2016) −43° 32′ 01.7″ (Crnojević et al. 2016) 1207
Leo T Dwarf 09h 34m 53.4s +17° 03′ 05″ 1365
Phoenix Dwarf Galaxy (P 6830) 01h 51m 06.3s −44° 26′ 41″ 1440
Barnard's Galaxy (NGC 6822) 19h 44m 56.6s −14° 47′ 21″ 1630
NGC 185 00h 38m 57.970s +48° 20′ 14.56″ 2050
Andromeda II 01h 16m 29.8s +33° 25′ 09″ 2220
IC 1613 (UGC 668) 01h 04m 47.8s +02° 07′ 04″ 2380
Leo A (Leo III DDO 69) 09h 59m 26.4s +30° 44′ 47″ 2600
Andromeda XI 00h 46.3m +33° 48′ 05″ 2600
IC 10 (UGC 192) 00h 20m 17.3s +59° 18′ 14″ 2500
Andromeda III 00h 35m 33.8s +36° 29′ 52″ 2440
Cassiopeia Dwarf (Cas dSph Andromeda VII) 23h 26m 31.0s +50° 41′ 31″ 2450
Cetus Dwarf 00h 26m 11.0s −11° 02′ 40″ 2460
M32 (NGC 221) 00h 42m 41.8s +40° 51′ 55″ 2490
Andromeda IX 00h 52m 53.0s +43° 11′ 45″ 2500
Pisces Dwarf (LGS 3) 01h 03m 55.0s +21° 53′ 06″ 2510
Andromeda V 01h 10m 17.1s +47° 37′ 41″ 2520
NGC 147 (DDO 3) 00h 33m 12.1s +48° 30′ 32″ 2530
Andromeda Galaxy (M31) 00h 42m 44.3s +41° 16′ 9″ 2500
Pegasus Dwarf Spheroidal (Andromeda VI) 23h 51m 46.3s +24° 34′ 57″ 2700
Andromeda I 00h 45m 39.8s +38° 02′ 28″ 2400
M110 (NGC 205) 00h 40m 22.05446s +41° 41′ 07.4963″ 2690
Andromeda VIII 00h 42m 06.0s +40° 37′ 00″ 2700
Triangulum Galaxy (M33) 01h 33m 50.02s +30° 39′ 36.7″ 3200
Andromeda XXI[64] 23h 54m 47.7s +42° 28′ 15″ 2800
Tucana Dwarf 22h 41m 49.0s −64° 25′ 12″ 3200
Pegasus Dwarf Irregular (DDO 216) 23h 28m 36.2s +14° 44′ 35″ 3000
Wolf-Lundmark-Melotte (WLM DDO 221) 00h 01m 58.1s −15° 27′ 39″ 3040
Andromeda XIX[67] 00h 19m 32.10s +35° 02′ 37.1″ 2651
Andromeda XXII[64] 01h 27m 40s +28° 05′ 25″ 3070
Aquarius Dwarf Galaxy (DDO 210) 20h 46m 51.8s −12° 50′ 53″ 3200
Sagittarius Dwarf Irregular Galaxy (SagDIG) 19h 29m 59.0s −17° 40′ 41″ 3390
UGC 4879 (VV124)[69] 09h 16m 02.023s +52° 50′ 42.05″ 4180
Andromeda XVIII[67] 00h 02m 14.5s +45° 05′ 20″ 4420
Antlia Dwarf 10h 04m 03.9s −27° 19′ 55″ 1320
Sextans A (UGCA 205 DDO 75) 10h 11m 00.8s −04° 41′ 34″ 4310
NGC 3109 10h 03m 06.9s −26° 09′ 34″ 1333
Sextans B (UGC 5373) 10h 00m 00.1s +05° 19′ 56″ 4440
Leo P 10h 21m 45.123s +18° 05′ 16.89″ 5284
IC 5152 22h 02m 41.521s −51° 17′ 47.20″ 5870
NGC 300 00h 54m 53.5s −37° 41′ 04″ 6070
KKR 25 16h 13m 47.9s +54° 22′ 16″ 6370
NGC 55 00h 14m 53.6s −39° 11′ 48″ 6500
UGC 9128 (DDO 187) 14h 15m 56.70s 23° 03′ 16.2″ 7300
GR 8 (DDO 155) 12h 58m 40.4s +14° 13′ 03″ 7900
IC 4662 (ESO 102-14) 17h 47.8m −64° 38′ 7960
UGC 8508 (I Zw 060) 13h 30m 44.4s +54° 54′ 36″ 8500
Dwingeloo 1 02h 56m 51.9s +58° 54′ 42″ 10000
UGC 9240 (DDO 190) 14h 24m 43.08s +44° 31′ 31.8″ 9915
UGCA 133 (DDO 44) 07h 34m 11.5s +66° 52′ 47″ 9820
NGC 4163 (NGC 4167) 12h 12.9m 36° 10′ 9650
UGCA 86 03h 59m 50.5s +67° 08′ 37″ 9720
NGC 1560 04h 32m 49.09s +71° 52′ 59.2″ 9750
Dwingeloo 2 02h 54m 08.47s +59° 00′ 19.1″ 10000
MB 3 02h 55m 42.7s "+58° 51' 37""" 10000
Maffei 2 02h 41m 55.1s +59° 36′ 15″ 9800
Donatiello I 01h 11m 40.37s +34° 36′ 3.2″ 9700
NGC 2403 07h 36m 51.4s +65° 36′ 09″ 9650
NGC 404 01h 09m 27.0s +35° 43′ 04″ 10000
KKH 22 03h 46m 48.5s +68° 05′ 46″ 10700
NGC 3741 11h 36m 05s +45° 17′ 02″ 10000
NGC 2366 7h 28m 54.6s +69° 12′ 57″ 10000
NGC 1569 (UGC 3056) 4h 30m 49.1s +64° 50′ 53″ 10960
Sculptor dIG (ESO 349–31) 00h 08m 13.36s −34° 34′ 42.0″ 10440
IC 342 03h 46m 48.5s +68° 05′ 46″ 10700
Holmberg II (DDO 50 UGC 4305) 08h 19m 04.98s +70° 43′ 12.1″ 11060
NGC 5102 13h 21m 57.6s −36° 37′ 49″ 12100
ESO 540-030 (KDG 2) 00h 49m 21.1s −18° 04′ 34″ 11350
NGC 247 00h 47m 08.5s −20° 45′ 37″ 11100
Sculptor Galaxy (NGC 253) 00h 47m 33s −25° 17′ 18″ 11400
Messier 82 09h 55m 52.2s +69° 40′ 47″ 11900
NGC 5253 13h 39m 55.9631s −31° 38′ 24.388″ 10900
NGC 2976 09h 47m 15.458s +67° 54′ 58.97″ 11600
NGC 4945 13h 05m 27.5s −49° 28′ 06″ 11700
NGC 6789 19h 16m 41s +63° 58′ 23″ 12000
Messier 81 09h 55m 33.2s +69° 3′ 55″ 11800
Holmberg IX (UGC 5336 DDO 66) 09h 57m 32.1s +69° 02′ 46″ 12000
Centaurus A (NGC 5128) 13h 25m 27.6s −43° 01′ 09″ 12000

Kernel Path YOUR_PATH/GPU-Metal-DistanceCalc/GPU-Metal-DistanceCalc/parse_convert_to_cartesian.metal

XYZ
-5 -21 12
-5 21 11
-62 36 20
0 -55 33
-22 38 87
67 39 57
42 42 83
92 53 39
-67 38 96
-127 -34 30
-130 0 57
-129 -35 67
-33 -127 96
-165 -95 49
59 0 193
-54 -54 184
-35 -133 220
251 -66 0
-251 144 8
233 62 160
-279 0 3
-176 101 259
0 207 256
-351 92 120
-233 233 -233
-232 -405 106
332 193 263
-404 -1 276
-502 133 4
-564 150 22
505 -288 60
-617 164 260
-572 -154 393
-694 400 174
616 620 831
-925 920 400
992 269 1008
412 -1520 416
1362 3 1531
1789 481 1222
2297 616 87
-1586 1573 1329
2160 7 1446
1276 1 2149
1961 4 1451
1499 -398 1895
2414 4 471
1883 5 1629
1822 6 1711
2249 603 935
1640 440 1861
1676 4 1895
1879 5 1648
2373 -626 1123
1890 6 1478
2008 5 1788
2049 6 1757
2657 718 1631
1997 -526 1890
1198 -687 2886
2803 -745 763
2929 0 810
2170 2 1522
2614 706 1445
1568 -2696 711
842 -3118 1029
-1787 1783 3331
3120 0 3130
-1015 586 606
-3721 2144 352
-1036 598 587
-3828 2210 412
-4353 2504 1640
3178 -1834 4580
4803 18 3710
-1852 -3215 5177
5037 5 4107
-5813 -3364 2858
-7657 -32 1940
-871 -3296 7192
-4717 -1274 6955
4461 2599 8563
-6115 -3545 6952
-1007 3722 9031
-7789 -6 5696
2658 2681 8956
1509 2629 9266
4449 2592 8572
4468 2603 8559
4286 2492 8452
7710 2072 5508
-1041 3847 8788
7840 2106 5837
2813 2831 9927
-6800 1803 7106
-925 3425 9349
2320 4039 9920
8595 5 5925
2813 2831 9927
-1830 3160 10439
-9375 -2527 7219
10789 38 3521
10379 35 3934
10307 35 4869
-2933 2910 11159
-8956 -2427 5717
-3094 3073 10748
-7343 -1970 8892
1368 -5084 10783
-2993 2969 11021
-3047 3021 11206
-8470 -2286 8186

Kernel Path YOUR_PATH/GPU-Metal-DistanceCalc/GPU-Metal-DistanceCalc/calculate_distances.metal

Distances from Segue 1:
Milky Way: 81 kilo light years
Canis Major Dwarf: 59 kilo light years
Segue 1: 0 kilo light years
Sagittarius Dwarf Sphr SagDEG: 110 kilo light years
Ursa Major II Dwarf: 78 kilo light years
Triangulum II: 134 kilo light years
Reticulum II: 121 kilo light years
Segue 2: 156 kilo light years
Willman 1: 76 kilo light years
Boötes II: 96 kilo light years
Coma Berenices Dwarf: 85 kilo light years
Boötes III: 108 kilo light years
Large Magellanic Cloud (LMC): 182 kilo light years
Boötes I: 169 kilo light years
Small Magellanic Cloud (SMC NGC 292): 214 kilo light years
Ursa Minor Dwarf: 187 kilo light years
Draco Dwarf (DDO 208): 263 kilo light years
Pisces Overdensity: 329 kilo light years
Sextans Dwarf Sph: 218 kilo light years
Sculptor Dwarf (ESO 351-G30): 327 kilo light years
Virgo I: 220 kilo light years
Ursa Major I Dwarf (UMa I dSph): 272 kilo light years
Carina Dwarf (ESO 206-G220): 297 kilo light years
Crater II: 310 kilo light years
Antlia 2: 363 kilo light years
Hercules Dwarf: 480 kilo light years
Fornax Dwarf (ESO 356-G04): 488 kilo light years
Canes Venatici II Dwarf: 428 kilo light years
Leo IV Dwarf: 450 kilo light years
Leo V Dwarf: 514 kilo light years
Pisces II: 654 kilo light years
Leo II Dwarf (Leo B DDO 93): 618 kilo light years
Canes Venatici I Dwarf: 659 kilo light years
Leo I Dwarf (DDO 74 UGC 5470): 745 kilo light years
Eridanus II: 1207 kilo light years
Leo T Dwarf: 1292 kilo light years
Phoenix Dwarf Galaxy (P 6830): 1463 kilo light years
Barnard's Galaxy (NGC 6822): 1674 kilo light years
NGC 185: 2076 kilo light years
Andromeda II: 2251 kilo light years
IC 1613 (UGC 668): 2430 kilo light years
Leo A (Leo III DDO 69): 2529 kilo light years
Andromeda XI: 2640 kilo light years
IC 10 (UGC 192): 2514 kilo light years
Andromeda III: 2478 kilo light years
Cassiopeia Dwarf (Cas dSph Andromeda VII): 2478 kilo light years
Cetus Dwarf: 2516 kilo light years
M32 (NGC 221): 2524 kilo light years
Andromeda IX: 2531 kilo light years
Pisces Dwarf (LGS 3): 2549 kilo light years
Andromeda V: 2539 kilo light years
NGC 147 (DDO 3): 2556 kilo light years
Andromeda Galaxy (M31): 2533 kilo light years
Pegasus Dwarf Spheroidal (Andromeda VI): 2753 kilo light years
Andromeda I: 2436 kilo light years
M110 (NGC 205): 2722 kilo light years
Andromeda VIII: 2733 kilo light years
Triangulum Galaxy (M33): 3233 kilo light years
Andromeda XXI[64]: 2837 kilo light years
Tucana Dwarf: 3213 kilo light years
Pegasus Dwarf Irregular (DDO 216): 3061 kilo light years
Wolf-Lundmark-Melotte (WLM DDO 221): 3093 kilo light years
Andromeda XIX[67]: 2690 kilo light years
Andromeda XXII[64]: 3104 kilo light years
Aquarius Dwarf Galaxy (DDO 210): 3255 kilo light years
Sagittarius Dwarf Irregular Galaxy (SagDIG): 3432 kilo light years
UGC 4879 (VV124)[69]: 4121 kilo light years
Andromeda XVIII[67]: 4449 kilo light years
Antlia Dwarf: 1246 kilo light years
Sextans A (UGCA 205 DDO 75): 4235 kilo light years
NGC 3109: 1259 kilo light years
Sextans B (UGC 5373): 4366 kilo light years
Leo P: 5208 kilo light years
IC 5152: 5898 kilo light years
NGC 300: 6106 kilo light years
KKR 25: 6353 kilo light years
NGC 55: 6534 kilo light years
UGC 9128 (DDO 187): 7258 kilo light years
GR 8 (DDO 155): 7834 kilo light years
IC 4662 (ESO 102-14): 7949 kilo light years
UGC 8508 (I Zw 060): 8454 kilo light years
Dwingeloo 1: 10000 kilo light years
UGC 9240 (DDO 190): 9874 kilo light years
UGCA 133 (DDO 44): 9781 kilo light years
NGC 4163 (NGC 4167): 9587 kilo light years
UGCA 86: 9708 kilo light years
NGC 1560: 9730 kilo light years
Dwingeloo 2: 10000 kilo light years
MB 3: 10001 kilo light years
Maffei 2: 9799 kilo light years
Donatiello I: 9729 kilo light years
NGC 2403: 9610 kilo light years
NGC 404: 10028 kilo light years
KKH 22: 10687 kilo light years
NGC 3741: 9936 kilo light years
NGC 2366: 9962 kilo light years
NGC 1569 (UGC 3056): 10941 kilo light years
Sculptor dIG (ESO 349–31): 10479 kilo light years
IC 342: 10687 kilo light years
Holmberg II (DDO 50 UGC 4305): 11020 kilo light years
NGC 5102: 12046 kilo light years
ESO 540-030 (KDG 2): 11401 kilo light years
NGC 247: 11150 kilo light years
Sculptor Galaxy (NGC 253): 11446 kilo light years
Messier 82: 11856 kilo light years
NGC 5253: 10845 kilo light years
NGC 2976: 11554 kilo light years
NGC 4945: 11651 kilo light years
NGC 6789: 12004 kilo light years
Messier 81: 11756 kilo light years
Holmberg IX (UGC 5336 DDO 66): 11956 kilo light years
Centaurus A (NGC 5128): 11948 kilo light years