Datasets:
name stringlengths 2 19 | manufacturer stringlengths 2 13 | family stringclasses 266
values | alt_name stringclasses 200
values | oxidizer stringclasses 30
values | fuel stringclasses 133
values | mass_kg float64 0 726k β | mass_flag stringclasses 1
value | impulse float64 0 1.32M β | impulse_flag stringclasses 1
value | thrust_kn float64 0 11.8k β | thrust_flag stringclasses 2
values | isp_s float64 0 3.55k β | isp_flag stringclasses 4
values | duration_s float64 0 800 β | duration_flag stringclasses 1
value | chambers float64 1 8 β | date stringclasses 171
values | usage stringlengths 2 20 β | group stringclasses 21
values |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RSRMV | NGISP | RSRM | null | null | PBAN | 726,000 | null | 1,320,000 | null | 9,996 | null | null | null | 132.8 | null | 1 | 2022 | SLS SRB | Solid |
SRM | THKU | SRM | null | null | PBAN | 590,000 | null | null | null | 11,790 | null | 267.3 | null | 123 | null | 1 | 1981 | STS SRB | Solid |
SRMU | ATKP | SRMU | null | null | HTPB | 350,000 | null | null | null | 7,500 | null | 285.6 | null | 137.8 | null | 1 | 1994 | Titan 4B | Solid |
UA1207 | UTC | T3SRM | null | null | Solid | 319,300 | null | null | null | 7,116.9 | null | 272 | null | 120 | null | 1 | 1989 | Titan 4 SRM | Solid |
EAP MPS P238 | EUROPK | Ariane | P230 | null | HTPB | 268,000 | null | null | null | 5,000 | null | 275.4 | null | 129 | null | 1 | 1996 | Ariane 5 EAP | Solid |
EAP MPS P240 | EUROPK | Ariane | P230 | null | HTPB | 277,500 | null | null | null | 5,000 | null | 275.4 | null | 129 | null | 1 | 1996 | Ariane 5 EAP | Solid |
UA1206 | UTC | T3SRM | null | null | Solid | 251,400 | null | null | null | 6,227 | null | 265 | null | 114 | null | 1 | 1989 | Titan 34D SRM | Solid |
UA1205 | UTC | T3SRM | null | null | Solid | 226,200 | null | null | null | 5,293.3 | null | 263 | null | 115 | null | 1 | 1965 | Titan 3 SRM | Solid |
S200 | VSSC | GSOM-200 | null | null | HTPB | 207,000 | null | null | null | 6,000 | null | 274 | null | 105 | null | 1 | 2009 | GSLV3 GSOM | Solid |
S139 | VSSC | PS1 | null | null | HTPB | 168,000 | null | null | null | 4,430 | null | 269 | null | 105 | null | 1 | 1993 | PSLV PS1 | Solid |
S125 | VSSC | PS1 | null | null | HTPB | 157,300 | null | 486,000 | null | 4,801 | null | 266 | null | 93 | null | 1 | null | GSLV S125 | Solid |
P120C | AVIO | null | null | null | HTPB-2013 | 153,000 | null | 368,900 | null | 4,500 | null | 278.5 | null | 132.8 | null | 1 | 2017 | Vega-C | Solid |
P80FW | AVIO | null | null | null | HTPB | 97,131 | null | 242,721 | null | 2,100 | null | 280 | null | 106.8 | null | 1 | 2012 | Vega [1] | Solid |
S85 | ISRO | null | null | null | HTPB | 87,000 | null | null | null | 2,600 | null | null | null | 117 | null | 1 | 2021 | SSLV [1] | Solid |
M-14 | NISST | Mu | null | null | HTPB BP-204J | 84,000 | null | null | null | 3,786 | null | 276 | null | 49 | null | 1 | 1995 | Mu V [1] | Solid |
H-II SRB-A3 | NISST | NASDA | null | null | HTPB | 76,500 | null | null | null | 2,305 | null | 283.6 | null | 120 | null | 1 | null | H2A SRB-A | Solid |
H3 SRB-3 | NISST | null | null | null | HTPB | 76,200 | null | null | null | 2,158 | null | 283.6 | null | 110 | null | 1 | 2023 | H3 SRB-3 | Solid |
H-II SRB-A | NISST | NASDA | null | null | HTPB | 75,000 | null | null | null | 2,250 | null | 280 | null | 100 | null | 1 | null | H2A SRB-A | Solid |
H-II SRB | NISST | NASDA | null | null | HTPB | 70,400 | null | null | null | 1,550 | s | 273 | null | 94 | null | 1 | 1994 | H2 SRB | Solid |
15D305 | YUZH | null | null | null | Solid | 53,700 | null | null | null | 2,060 | null | null | null | null | null | 1 | null | RT-23 [1] | Solid |
3D65 | YUZH | null | null | null | Solid | 53,700 | null | null | null | 2,060 | null | null | null | null | null | 1 | null | R-39 [1] | Solid |
15D206 | YUZH | null | null | null | Solid | 53,700 | null | null | null | 2,060 | null | null | null | null | null | 1 | null | RT-23 [1] | Solid |
GEM-63XL | NGISH | null | null | null | HTPB | 53,400 | null | null | null | 2,026 | null | 275 | ? | 84 | null | 1 | 2020 | GEM-63XL | Solid |
GEM-63 | OATKH | null | null | null | HTPB | 49,300 | null | null | null | 1,663 | null | 275 | ? | 94 | null | 1 | 2015 | GEM-63 | Solid |
Castor 120 | THKU | MX | null | null | HTPB | 53,100 | null | null | null | 1,604 | null | 280 | null | 83.4 | null | 1 | 1995 | Athena [1] | Solid |
SR118 | THKU | MX | TU-904 | null | HTPB | 48,625 | null | null | null | 1,711 | null | 281.4 | null | 78.8 | null | 1 | 1983 Jun 17 | Peacekeeper [1] | Solid |
GEM-60 | OATKH | null | null | null | Solid | 46,200 | null | null | null | 1,361 | null | 275 | null | 90 | null | 1 | 2015 | Atlas V SRM | Solid |
GEM-60 (D) | ATKH | GEM | null | null | HTPB | 33,200 | null | null | null | 758 | null | 275 | null | 90 | null | 1 | 2002 Nov 20 | Delta IV SRB | Solid |
AJ-60A | AJSP | null | null | null | Solid | 46,200 | null | null | null | 1,361 | null | 275 | null | 90 | null | 1 | 2003 | Atlas V SRM | Solid |
CZ-11-1 | SLREC | null | null | null | Solid | 40,000 | null | null | null | null | null | 248 | null | null | null | 1 | 2016 | CZ-11 [1] | Solid |
D-5-1 | THKU/HERC | null | null | null | Solid | 39,100 | null | null | null | null | null | null | null | 64 | null | 1 | null | Trident II [1] | Solid |
M-25 | NISST | Mu | null | null | HTPB BP-204J | 38,000 | null | null | null | 1,240 | null | 288 | ? | 71 | null | 1 | 1995 | Mu V [2] | Solid |
Zefiro-40C | AVIO | null | null | null | HTPB-2013 | 39,270 | null | 103,600 | null | 1,120 | null | 293.5 | null | 92.9 | null | 1 | 2017 | Vega-C [2] | Solid |
Ceres-2 M1 | XIDO | null | null | null | HTPB | 38,000 | ? | null | null | null | null | null | null | null | null | 1 | null | GSX2 [1] | Solid |
CZ-6A Booster | ARMT? | null | null | null | Solid | 35,000 | ? | null | null | 1,200 | ? | null | null | null | null | 1 | 2020 | Chang Zheng 6A | Solid |
DF-31-1 | ARMT | null | null | null | Solid | 35,000 | ? | null | null | null | null | null | null | null | null | 1 | null | DF-31 [1] | Solid |
DF-41-1 | ARMT | null | null | null | Solid | 35,000 | ? | null | null | null | null | null | null | null | null | 1 | null | DF-31 [1] | Solid |
15D23P | ARSL | RT-2 | null | null | Solid | 34,550 | null | null | null | 981 | null | null | null | 75.4 | null | 1 | null | RT-2P [1] | Solid |
15D23 | ARSL | RT-2 | null | null | Solid | 34,550 | null | null | null | 893 | null | null | null | 75.4 | null | 1 | null | RT-2 [1] | Solid |
M-24 | NISST | Mu | null | null | HTPB BP-204J | 34,000 | null | null | null | 1,246 | null | 288 | null | 71 | null | 1 | 1995 | Mu V [2] | Solid |
M-13 | NISST | Mu | null | null | CTPB | 33,407 | null | null | null | 954 | null | 239 | null | 70 | null | 1 | 1977 | Mu 3H [1] | Solid |
Agni III | DRDO | Agni3 | null | null | HTPB/AP/Al | 33,000 | null | null | null | 1,040 | null | 237 | s | 75 | null | 1 | 2006 | Agni 3 [1] | Solid |
MSBS 501 | G2P/SNECPS | null | null | null | Solid | 30,000 | ? | null | null | 900 | null | null | null | 60 | null | 1 | null | MSBS M51 [1] | Solid |
SR119 | AJSP | MX Stage 2 | null | null | HTPB | 27,669 | null | null | null | 1,365 | null | 304 | null | 54 | null | 1 | 1983 Jun 17 | Peacekeeper [2] | Solid |
Castor 30XL | THKU | null | null | null | Solid | 27,400 | ? | 58,000 | ? | 350 | null | null | null | 166 | null | 1 | null | Taurus 2 [2] | Solid |
M-10 | NISST | Mu | null | null | Solid | 26,555 | null | null | null | 737 | null | 219 | null | 61 | null | 1 | 1970 | Mu 4S [1] | Solid |
RD RT-21 (1) | MITT | null | null | null | Solid | 26,000 | null | null | null | null | null | null | null | 63 | null | 1 | null | Temp-2S [1] | Solid |
15Zh58A | MITT | Topol | null | null | Solid | 26,000 | null | null | null | 980 | null | 263 | null | 60 | null | 1 | null | Start-1 [1] | Solid |
Zefiro 23 | AVIO | null | null | null | HTPB | 26,563 | null | 67,776 | null | 935 | null | 289 | null | 71.7 | null | 1 | 2012 | Vega [2] | Solid |
15D339 | YUZH | null | null | null | Solid | 25,000 | ? | null | null | 1,050 | null | null | null | null | null | 1 | null | RT-23 [2] | Solid |
15D207 | YUZH | null | null | null | Solid | 25,000 | ? | null | null | 1,050 | null | null | null | null | null | 1 | null | RT-23 [2] | Solid |
15D290 | YUZH | null | null | null | Solid | 25,000 | ? | null | null | 1,050 | null | null | null | null | null | 1 | null | RT-23 [2] | Solid |
R-39 St 2 | YUZH | null | null | null | Solid | 25,000 | ? | null | null | 1,050 | null | null | null | null | null | 1 | null | RT-23 [2] | Solid |
HS-18-S1 | KPA | null | null | null | Solid | 25,000 | ? | null | null | null | null | null | null | null | null | 1 | null | HS-18 [1] | Solid |
M55A1 | THKU | Minuteman | M55A1 | null | PBAN | 22,930 | null | 54,730 | null | 792 | null | 266.1 | null | 59.3 | null | 4 | 1961 Feb 1 | Minuteman 1A XM-55 | Solid |
TU-122 | THKU | Minuteman | M55E1 | null | PBAN | 23,240 | null | null | null | 891 | null | null | null | 60 | null | 4 | 1962 Dec 7 | Minuteman 1B | Solid |
TU-122-ATK | ATKP | Minuteman | M55E1 | null | PBAN | 23,240 | null | null | null | 891 | null | null | null | 60 | null | 4 | 1962 Dec 7 | Minuteman 3 PRP | Solid |
SEP 401 | SEP | 401 | null | null | Butalane | 22,500 | null | null | null | 900 | null | null | null | 60 | null | 1 | 1980 Nov 18 | MSBS M4 [1] | Solid |
LEO-46 | AJSP | null | null | null | HTPB | 22,102 | null | 56,360 | null | 1,265.4 | null | null | null | 76 | null | 1 | 2015 | Super Strypi [1] | Solid |
Rafe | IRGC | null | null | null | Solid | 20,000 | ? | null | null | null | null | null | null | null | null | 1 | null | Qaem-100 [1] | Solid |
GEM-46 | ATKH | GEM | null | null | HTPB | 19,040 | null | 45,730 | ? | 608.1 | null | 274 | null | 75.2 | null | 1 | null | Delta III SRB | Solid |
DF-26-1 | ARMT | null | null | null | Solid | 19,000 | ? | null | null | null | null | 239.7 | null | 65 | null | 1 | null | DF-26 [1] | Solid |
DF-27-1 | ARMT | null | null | null | Solid | 19,000 | ? | null | null | null | null | 239.7 | null | 65 | null | 1 | null | DF-26 [1] | Solid |
RT-1-1 | OKB1 | null | null | null | Solid | 19,000 | ? | null | null | 900 | null | null | null | 30 | null | 1 | null | RT-1 [1] | Solid |
Hyperbola-1 M1 | ARMT | null | null | null | Solid | 18,000 | null | null | null | 770 | null | 245 | null | 65 | null | 1 | null | Hyperbola-1 [1] | Solid |
Zefiro | FIATA | Zefiro | null | null | HTPB 1814 | 17,260 | null | 41,830 | null | 590 | null | 271 | null | 71 | null | 1 | 1999 | Vega [2] | Solid |
M-35 | NISST | Mu | null | null | HTPB | 17,200 | null | null | null | 445 | null | 295 | null | 129 | null | 1 | 2016 | Epsilon | Solid |
M-35a | NISST | Mu | null | null | HTPB | 17,200 | null | null | null | 445 | null | 295 | null | 129 | null | 1 | 2016 | Epsilon | Solid |
E-21 | NISST | Mu | null | null | HTPB | 17,200 | null | null | null | 610 | null | 294.5 | null | 120 | null | 1 | 2016 | Epsilon | Solid |
Ceres-1 M1 | XIDO | null | null | null | HTPB | 17,000 | ? | null | null | 590 | null | null | null | 74 | null | 1 | 2020 | GS-1 [1] | Solid |
15D15 | NII125/YUZH | null | 15D151 | null | Solid | 16,700 | null | null | null | 600 | null | 260 | null | 65 | null | 4 | 1967 | RT-20P [1] | Solid |
DF-21-1 | ARMT | null | null | null | Solid | 16,621 | null | null | null | null | null | 239.7 | null | 65 | null | 1 | null | DF-21 [1] | Solid |
Orion 50SXL | ATKH | Orion | null | null | HTPB | 16,400 | null | 43,586 | null | 594 | null | 295 | null | 73.4 | null | 1 | 1994 | Pegasus XL [1] | Solid |
Orion 50SXLG | ATKH | Orion | null | null | HTPB | 16,400 | null | 43,586 | null | 594 | null | 295 | null | 73.4 | null | 1 | 2003 | Taurus Lite [1] | Solid |
Orion 50SXLT | ATKH | Orion | null | null | HTPB | 16,400 | null | 43,586 | null | 594 | null | 295 | null | 73.4 | null | 1 | 2003 | IRBM-T1 [1] | Solid |
SICBM | THKU? | SICBM Stage 1 | null | null | HTPB/NG/BTTN | 16,100 | null | null | null | 979 | null | null | null | 40 | ? | 1 | 1989 May 11 | SICBM [1] | Solid |
SEP 902 | SEP | P-16 | P-10 | null | Isolane | 16,000 | null | null | null | 540 | null | null | null | null | null | 4 | 1968 Dec 21 | SSBS S2 [1] | Solid |
3D17 | PERM | null | null | null | Solid | 16,000 | ? | null | null | 579 | null | null | null | 84 | null | 1 | 1973 | R-31 [1] | Solid |
H-II SSB (A) | NISST | NASDA | null | null | HTPB | 15,500 | null | null | null | 745 | null | 282 | null | 60 | null | 1 | null | H2A SSB | Solid |
RT-23-3 | YUZH | null | null | null | Solid | 15,000 | ? | null | null | 206 | null | null | null | null | null | 1 | null | RT-23 [3] | Solid |
Ceres-2 M2 | XIDO | null | null | null | HTPB | 15,000 | ? | null | null | null | null | null | null | null | null | 1 | null | GSX2 [2] | Solid |
CZ-11-2 | CALT | null | null | null | Solid | 15,000 | ? | null | null | null | null | null | null | null | null | 1 | null | CZ-11 [2] | Solid |
5S47 | KAZSOY | null | null | null | Solid | 15,000 | ? | null | null | null | null | null | null | 5 | null | 1 | 1968 | A-350Zh booster | Solid |
Agni P S1 | DRDO | null | null | null | Solid | 15,000 | ? | null | null | null | null | null | null | null | null | 1 | 2021 | Agni P[1] | Solid |
A-350 Booster | KAZSOY | null | null | null | Solid | 15,000 | ? | null | null | null | null | null | null | 5 | null | 1 | 1968 | A-350 booster | Solid |
51T6 Motor | KAZSOY | null | null | null | Solid | 15,000 | ? | null | null | null | null | null | null | 5 | null | 1 | 1968 | A-350 booster | Solid |
Nudol' St 1 | ALMAN | null | null | null | Solid | 15,000 | ? | null | null | null | null | null | null | 5 | null | 1 | 2015 | A-235 | Solid |
TX-780XL | THKX | Castor | Castor IVAXL | null | HTPB | 14,851 | null | null | null | 599.8 | null | 269 | null | 60 | null | 1 | 1980s | Atlas | Solid |
Kairos Stage 1 | SPONE | null | null | null | Solid | 14,700 | null | null | null | null | null | null | null | null | null | 1 | 2024 | Kairos [1] | Solid |
Algol 3A | UTC | Algol III | null | null | Solid | 14,136 | null | 32,040 | null | 477 | null | 258.2 | null | 78 | null | 1 | null | Scout [1] | Solid |
Castor 30 | THKU | null | null | null | Solid | 14,035 | null | 35,200 | null | 259 | null | 301 | null | 136 | null | 1 | null | Taurus 2 [2] | Solid |
Agni III S2 | DRDO | Agni3 | null | null | HTBP/AP/Al | 14,000 | null | null | null | 315 | null | 294 | null | 110 | null | 1 | 2006 | Agni 3 [2] | Solid |
5S24 | KAZSOY | null | null | null | Solid | 14,000 | ? | null | null | null | null | null | null | null | null | 1 | null | V-825 [1] | Solid |
Castor 30B | THKU | null | null | null | Solid | 13,970 | null | 37,300 | null | 293.4 | null | 304 | null | 127 | null | 1 | null | Taurus 2 [2] | Solid |
Orion 50S | ATKH | Orion | null | null | HTPB | 13,420 | null | 35,108 | null | 485 | null | 294.4 | null | 72.4 | null | 1 | 1990 | Pegasus [1] | Solid |
M-23 | NISST | Mu | null | null | HTPB | 13,100 | null | null | null | 524 | null | 282 | null | 73 | null | 1 | 1980 | Mu 3S [2] | Solid |
GEM-40 | ATKH | GEM | null | null | HTPB | 13,080 | null | 31,600 | ? | 499.2 | null | 274 | null | 63.3 | null | 1 | null | Delta II SRB | Solid |
15Zh58B | MITT | Topol | null | null | Solid | 13,000 | null | null | null | 490 | null | 280 | null | 64 | null | 1 | null | Start-1 [2] | Solid |
ATSM-13 | IAI | Shaviyt | null | null | HTPB | 13,000 | null | null | null | 775 | null | 250 | s | 55 | null | 1 | 1994 | Shaviyt 1 [1] | Solid |
Hyperbola-1 M2 | HEXI | null | null | null | Solid | 13,000 | null | null | null | 597 | null | 282 | null | null | null | 1 | null | Hyperbola-1 [2] | Solid |
GCAT Launch Vehicles and Engines
Part of the Orbital Mechanics Datasets collection on Hugging Face.
Launch vehicle specifications, rocket engines, and vehicle stages from GCAT (General Catalog of Artificial Space Objects), maintained by Jonathan McDowell at the Harvard-Smithsonian Center for Astrophysics.
Currently 1,817 launch vehicles, 1,462 engines, and 1,596 stages (4,875 records total).
Configs
vehicles β 1,817 launch vehicles
Every known launch vehicle variant with physical specifications.
| Column | Type | Description |
|---|---|---|
lv_name |
string | Launch vehicle name |
lv_family |
string | Vehicle family (e.g. "Falcon", "Soyuz") |
lv_manufacturer |
string | Manufacturer code |
lv_variant |
string | Variant designation |
lv_alias |
string | Alternative name |
lv_min_stage |
int | Minimum number of stages |
lv_max_stage |
int | Maximum number of stages |
length_m |
float | Vehicle length in meters |
length_flag |
string | Length qualifier flag |
diameter_m |
float | Vehicle diameter in meters |
diameter_flag |
string | Diameter qualifier flag |
launch_mass_t |
float | Launch mass in tonnes |
mass_flag |
string | Mass qualifier flag |
leo_capacity_kg |
float | LEO payload capacity in kg |
gto_capacity_kg |
float | GTO payload capacity in kg |
to_thrust_kn |
float | Takeoff thrust in kN |
class |
string | Vehicle class (O=orbital, R=research, etc.) |
apogee_km |
float | Design apogee in km |
range |
string | Range |
engines β 1,462 rocket engines
Rocket engine specifications including propellants, thrust, and specific impulse.
| Column | Type | Description |
|---|---|---|
name |
string | Engine name |
manufacturer |
string | Manufacturer code |
family |
string | Engine family |
alt_name |
string | Alternative name |
oxidizer |
string | Oxidizer type |
fuel |
string | Fuel type |
mass_kg |
float | Engine mass in kg |
mass_flag |
string | Mass qualifier flag |
impulse |
float | Total impulse |
impulse_flag |
string | Impulse qualifier flag |
thrust_kn |
float | Thrust in kN |
thrust_flag |
string | Thrust qualifier flag |
isp_s |
float | Specific impulse in seconds |
isp_flag |
string | ISP qualifier flag |
duration_s |
float | Burn duration in seconds |
duration_flag |
string | Duration qualifier flag |
chambers |
float | Number of chambers |
date |
string | First use date |
usage |
string | Vehicle usage |
group |
string | Propellant group (Solid, Liquid, Hybrid, etc.) |
stages β 1,596 vehicle stages
Individual stage specifications for launch vehicles.
| Column | Type | Description |
|---|---|---|
stage_name |
string | Stage name |
stage_family |
string | Stage family |
stage_manufacturer |
string | Manufacturer code |
stage_alt_name |
string | Alternative name |
length_m |
float | Stage length in meters |
diameter_m |
float | Stage diameter in meters |
launch_mass_t |
float | Stage mass at launch in tonnes |
dry_mass_kg |
float | Dry mass in kg |
thrust_kn |
float | Stage thrust in kN |
duration_s |
float | Burn duration in seconds |
engine |
string | Engine name |
n_engines |
float | Number of engines |
Quick stats
- 1,817 launch vehicle variants across 392 families
- 1,462 engines from 317 manufacturers
- 1,596 stage configurations
- 21 propellant groups (solid, liquid, hybrid, etc.)
Usage
from datasets import load_dataset
vehicles = load_dataset("juliensimon/gcat-launch-vehicles", "vehicles", split="train")
engines = load_dataset("juliensimon/gcat-launch-vehicles", "engines", split="train")
stages = load_dataset("juliensimon/gcat-launch-vehicles", "stages", split="train")
vdf = vehicles.to_pandas()
# Largest launch vehicles by mass
print(vdf.nlargest(10, "launch_mass_t")[["lv_name", "launch_mass_t", "leo_capacity_kg"]])
# Engines by specific impulse
edf = engines.to_pandas()
print(edf.nlargest(10, "isp_s")[["name", "fuel", "oxidizer", "isp_s", "thrust_kn"]])
# Orbital-class vehicles only
orbital = vdf[vdf["class"] == "O"]
print(f"{len(orbital)} orbital-class vehicles")
Data source
GCAT (General Catalog of Artificial Space Objects) by Jonathan McDowell, Harvard-Smithsonian Center for Astrophysics. GCAT is the most comprehensive public catalog of space objects and launch vehicles, widely used in the spaceflight research community.
Update schedule
Static dataset β rebuilt manually when GCAT is updated (approximately monthly).
Related datasets
- space-launch-log β Complete global launch history from GCAT
- space-track-satcat β NORAD satellite catalog
- starlink-fleet-data β Daily Starlink constellation snapshots
Pipeline
Source code: juliensimon/space-datasets
Citation
@dataset{gcat_launch_vehicles,
author = {Simon, Julien},
title = {GCAT Launch Vehicles and Engines},
year = {2026},
publisher = {Hugging Face},
url = {https://huggingface.co/datasets/juliensimon/gcat-launch-vehicles},
note = {Based on GCAT by Jonathan McDowell, Harvard-Smithsonian Center for Astrophysics}
}
License
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