The local space context of Hongkou as this registry holds it — the catalogued human footprint on the ground around it, the orbits that can pass overhead, and the geostationary belt seen from here.
| position | 31.250° N, 121.489° E | GeoNames (geonames.org) — CC BY 4.0 |
|---|---|---|
| population | 687,500 inhabitants | GeoNames (geonames.org) — CC BY 4.0 |
| site | distance · bearing | position | source layer |
|---|---|---|---|
| Laogang sounding rocket site, Shanghai Shi, Zhongguo | 41 km SE (129°) | 31.020° N, 121.820° E | gcat-sites |
| Ninbgo missile base, Zhejiang province | 154 km S (172°) | 29.880° N, 121.717° E | gcat-sites |
| Shijiedu sounding rocket site, Anhui Province | 219 km W (262°) | 30.950° N, 119.220° E | gcat-sites |
| Wenzhou missile base, Zhejiang | 344 km SSW (198°) | 28.300° N, 120.400° E | gcat-sites |
| Huang Hai CZ-11 launch zone | 407 km N (356°) | 34.900° N, 121.190° E | gcat-sites |
| Yellow Sea launch area | 440 km NNE (18°) | 35.000° N, 123.000° E | gcat-sites |
| Leping missile base, Jianxi, China | 491 km WSW (240°) | 28.970° N, 117.120° E | gcat-sites |
| Fuan? missile base | 507 km SSW (202°) | 27.000° N, 119.600° E | gcat-sites |
| Barge launch site, Jungmun, Jeju I. | 510 km ENE (64°) | 33.200° N, 126.400° E | gcat-sites |
| Jianggezhuang Submarine Base | 546 km N (351°) | 36.104° N, 120.579° E | gcat-sites |
| Haiyang test site, Shandong | 618 km N (358°) | 36.800° N, 121.200° E | gcat-sites |
| 822 Brigade missile base, Laiwu, Shangdong province | 655 km NNW (329°) | 36.235° N, 117.716° E | gcat-sites |
| Naro Space Center (Naro Uju Senteo),Oenaro I,GoHeung, Jeollanam-do,Korea | 666 km ENE (56°) | 34.432° N, 127.536° E | gcat-sites |
| Anhueng, Taean missile site, Ch'ungch'ong Namdo, Korea | 714 km NE (35°) | 36.410° N, 126.100° E | gcat-sites |
| Bohai launch area (Some Yellow Sea launches may also be here) | 808 km N (356°) | 38.500° N, 120.900° E | gcat-sites |
| … and 25 more within 1000 km | |||
| site | distance · bearing | position | source layer |
|---|---|---|---|
| Mir | Demo Flight | 508 km ENE (63°) | 33.217° N, 126.367° E | launchlibrary |
| Nuri | NeonSat-2 to 6 | 666 km ENE (56°) | 34.432° N, 127.535° E | launchlibrary |
| H3-22 | Michibiki 7 (QZS-7) | 910 km E (94°) | 30.401° N, 130.976° E | launchlibrary |
| H3-24 | Martian Moon eXplorer (MMX) | 910 km E (94°) | 30.401° N, 130.976° E | launchlibrary |
| Epsilon S | JV-LOTUSat-1 | 912 km E (88°) | 31.251° N, 131.082° E | launchlibrary |
| site | distance · bearing | position | source layer |
|---|---|---|---|
| Nagasaki (Fat Man) | 807 km ENE (76°) | 32.773° N, 129.863° E | nukes |
| MUSCOVY | 816 km NW (323°) | 37.017° N, 115.995° E | nuclear-tests |
Distances are great-circle on a sphere of mean radius 6,371 km; bearings are initial true bearings from the city. Each position is the source catalogue's own, read back from the registry.
Of the 23,251 artificial objects the registry places in Earth orbit on 2026-10-18, 20,249 fly orbits whose ground track reaches 31.250° N, so they can pass directly overhead; the other 3,002 never reach this latitude.
| space station | inclination | can pass overhead |
|---|---|---|
| Bai Xiang | 85.0° | yes |
| International Space Station (+3 docked records) | 51.6° | yes |
| Kosmos-382 | 55.9° | yes |
| Tianhe | 41.5° | yes |
Computed: an orbit's equatorial inclination bounds the latitudes its track reaches (inclination i, or 180° − i when retrograde), from the orbital elements the registry holds. «Can pass overhead» is geometry, not a schedule — when, and whether it is lit and visible, depends on the hour.
The geostationary belt arcs across the southern sky and stands 53.6° above the horizon due south — the elevation to aim at for a satellite at this city's own longitude. Computed: spherical Earth (equatorial radius 6,378.137 km), circular orbit of one sidereal day (42,164 km); good to a few tenths of a degree.
/sim.html#sel=EARTH&tn=1,
then stand at Hongkou in Stargazing — it computes which satellites are visible now, from this
registry, in your browser.