Meteor shower December phi-Cassiopeiids — observing times and guide
December phi-Cassiopeiids visibility on 2026-12-03
December phi-Cassiopeiids rise and set timetable
| Time | Elevation | |
Moonrise, 32% illuminated  | 01:17 | 10° |
| Moonset | 13:39 | -7° |
| December phi-Cassiopeiids radiant rise | 14:28 | |
| Sunset | 17:52 | 25° |
| Civil sunset | 18:15 | 27° |
| Twilight start (−12°) | 18:41 | 29° |
| Astronomical observing session begins | 19:07 | 30° |
| December phi-Cassiopeiids radiant transit | 20:27 | 32° |
| December phi-Cassiopeiids radiant set | 02:26 | |
| Astronomical observing session ends | 04:32 | -16° |
Track December phi-Cassiopeiids position throughout the night
← 3 December 2026 →
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Moon conditions for December phi-Cassiopeiids — 2026
Meteor visibility depends strongly on the Moon’s position and brightness. This chart helps identify darker observing periods.
Blue and white show night and day; red marks when the radiant is above the horizon, the white line its transit, and grey when the Moon is above the horizon. Select a date for detailed Sun and Moon times.
Observing the December phi-Cassiopeiids
Radiant position:
- Right Ascension: 01h 18m 24s"
- Declination: 57° 42' 00s
Peak activity: Active from December 3 to December 4; with peak activity around December 3.
Associated parent body: December phi-Cassiopeiids is produced by debris associated with 3D/Biela?. Earth encounters this stream along its orbit.
December phi-Cassiopeiids — Observation history
Previous activity records show the reported start, peak and end dates. Exact dates may shift slightly from year to year.
| Year | Start date | Peak date | End date |
|---|---|---|---|
| 2016 | November 27 | December 3 | December 9 |
| 2022 | December 3 | December 4 | December 5 |
Use these dates as a historical guide and check current predictions near the event.
Data Credits
Meteor data are provided by the International Astronomical Union Meteor Data Center . We thank the observers and researchers who contribute these records.