🌙 Tonight's Sky in Taipei — Sat, October 17, 2026
Taiwan · 25.03°, 121.57° · Computed 10-18 10:45 UTC+8
🛰️ Tonight's naked-eye ISS pass
ISS over Taipei 03:57–03:59 · north-northeast→north-northeast · max 6°
emerges from Earth's shadow · A bright, steady star crosses the sky in 3–6 minutes, no blinking. No equipment needed — visible even from a city centre.
Tonight in brief
On Sat, October 17, 2026 the Sun sets over Taipei at 17:25; astronomical twilight ends at 18:41 and the sky is fully dark for 9.9 hours until 04:36, with sunrise at 05:53. The Moon is a first quarter (40.5% lit) and is already up at dusk, setting at 22:10 — after that the sky is moonless.
Naked-eye planets tonight: Jupiter, Mars, Saturn, Mercury. Jupiter rises in the east at 01:17 and climbs to 56° in the east by 05:30 before dawn. Mars rises in the east at 00:25 and climbs to 67° in the east by 05:30 before dawn. Saturn is already 13° up in the east at dusk, peaks at 67° in the south at 22:51, and sets in the west at 04:55. Mercury is already 9° up in the southwest at dusk, peaks at 9° in the southwest at 17:48, and sets in the west at 18:32. Uranus (binoculars/telescope) rises in the northeast at 19:38 and climbs to 86° in the south by 02:21 before dawn. Neptune (binoculars/telescope) is already 20° up in the east at dusk, peaks at 65° in the south at 22:20, and sets in the west at 04:21. Venus is too close to the Sun to be seen tonight.
The International Space Station crosses from north-northeast to north-northeast between 03:57 and 03:59, reaching 6° and shining like a bright star to the naked eye — it pops out of Earth's shadow at 03:57. Comet 161P/Hartley-IRAS (JPL mag. 15) is highest at 19:13, 72° in the south; Comet 2P/Encke (JPL mag. 17.1) is highest at 22:18, 83° in the south — both remain telescope/imaging targets. Kp is 1 (quiet), so aurora is possible only above about 64.9° geomagnetic latitude — not expected from Taipei (latitude 25.0°). Coming up: Orionid meteor shower peak in 4 days, Comet 161P/Hartley-IRAS perihelion in 41 days, Geminid meteor shower peak in 57 days.
☀️🌙 Sun & Moon
🪐 Planets — visible tonight?
- Mercury0.0Visible · eveningRises · direction: already up at duskSets · direction: 18:32 · W 248°Highest (altitude · direction · time): 9° · SW 243° · 17:48
- Venus-4.2Not visible · too close to the SunRises · direction: —Sets · direction: 17:32 · W 248°Highest (altitude · direction · time): —
- Mars+1.0Visible · pre-dawnRises · direction: 00:25 (next day) · E 69°Sets · direction: until dawnHighest (altitude · direction · time): 67° · E 102° · 05:30 (next day)
- Jupiter-1.9Visible · pre-dawnRises · direction: 01:17 (next day) · E 73°Sets · direction: until dawnHighest (altitude · direction · time): 56° · E 101° · 05:30 (next day)
- Saturn+0.3Visible · midnightRises · direction: already up at duskSets · direction: 04:55 (next day) · W 272°Highest (altitude · direction · time): 67° · S 180° · 22:51
- Uranus+5.6Visible · pre-dawnRises · direction: 19:38 · NE 66°Sets · direction: until dawnHighest (altitude · direction · time): 86° · S 180° · 02:21 (next day)
- Neptune+7.8Visible · midnightRises · direction: already up at duskSets · direction: 04:21 (next day) · W 270°Highest (altitude · direction · time): 65° · S 180° · 22:20
- Pluto+14.6Visible · eveningRises · direction: already up at duskSets · direction: 23:50 · SW 244°Highest (altitude · direction · time): 41° · S 180° · 18:35
Pluto is a dwarf planet at magnitude 14–15 — a large-telescope / imaging target
☄️ Comets 2P & 161P — tonight's position
| Comet | JPL predicted mag. | Highest | Equipment |
|---|---|---|---|
| Comet 161P/Hartley-IRAS RA 21.03h · Dec +6.5° · Δ 0.664 AU | 15.0 | 72° · S 181° · 19:13 | large telescope / imaging |
| Comet 2P/Encke RA 0.19h · Dec +17.9° · Δ 1.016 AU | 17.1 | 83° · S 175° · 22:18 | large telescope / imaging |
Magnitudes are JPL M1/K1 predictions and can differ from observations (COBS) by 2–3 magnitudes. Coordinates J2000.
🛰️ All ISS passes (24 h from local noon)
| Time | Start (dir.) | Max. elevation | End (dir.) | Visible? |
|---|---|---|---|---|
| 12:48–12:58 | NW 310° | 40° · SW 237° | SE 153° | Daylight (not visible) |
| 02:12 (next day)–02:22 | S 190° | 18° · SE 121° | NE 61° | In Earth's shadow (not visible) |
| 03:57 (next day)–03:59 | N 19° | 6° · N 19° | NE 27° | Visible to the naked eye |
ISS TLE epoch: 2026-10-17 19:43 UTC · CelesTrak
📡 Receiving passes — Meteor-M N2-4 · NOAA-20 · NOAA-21 (max. elevation ≥ 20°)
For direct reception of 137.9 MHz LRPT (Meteor) and X-band (NOAA-20/21); day or night. Dish pointing angles are in the Sky & Impact Lab → Sat Pass tab.
| Satellite | Time | Max. elevation | Length |
|---|---|---|---|
| NOAA-21 | 12:25–12:40 | 43° · E 70° | 15 min |
| NOAA-20 | 13:21–13:36 | 54° · W 250° | 15 min |
| Meteor-M N2-4 | 13:26–13:40 | 25° · E 69° | 14 min |
| Meteor-M N2-4 | 15:06–15:20 | 28° · W 258° | 14 min |
| NOAA-21 | 00:52 (next day)–01:07 | 37° · E 105° | 15 min |
| NOAA-20 | 01:48 (next day)–02:03 | 63° · NW 298° | 15 min |
| Meteor-M N2-4 | 03:31 (next day)–03:46 | 34° · W 288° | 14 min |
🌌 Space weather in one line
Kp 1 · Quiet · aurora possible above 64.9° geomagnetic latitudeNOAA SWPC 2026-10-17T21:00
📅 Coming up
- in 4 daysOct 21Orionid meteor shower peak
Dust from Halley's Comet — night of Oct 21–22, about 10–20 per hour (AMS observed rate). The Moon sets after midnight, so pre-dawn is best.
Source: AMS Meteor Shower Calendar · Wiki
- in 41 daysNov 27Comet 161P/Hartley-IRAS perihelion
The Halley-type comet, back after 21.5 years, reaches its closest point to the Sun (1.28 AU). A telescope/imaging target at magnitude 10–12.
Source: NASA JPL Small-Body Database · Wiki
- in 57 daysDec 13Geminid meteor shower peak
The richest shower of the year — night of Dec 13–14, with a 15%-lit Moon: good conditions.
Source: AMS Meteor Shower Calendar
🌍 Other cities
How this is computed
Planets, Moon and Sun: astronomy-engine (VSOP87, refraction-corrected). Comets: two-body propagation of JPL SBDB elements. Satellites: CelesTrak TLE + SGP4. An ISS pass is “visible” when the Sun is at least 6° below the observer's horizon and the satellite is outside Earth's shadow (cylindrical model). A planet is “visible” when it reaches 5° altitude after civil dusk. All times are in the city's time zone; the date rolls to the next night at local noon. Recomputed every 30 minutes.