Comet 90000479 40P/Vaisala 1 Observation Details
40P/Vaisala 1 Daily Motion
Tonight, observing 40P/Vaisala 1 may prove challenging owing to its low elevation. It will reach its transit at by 07:10 and set before sunset at 12:48. Rising near twilight's end at 01:32, it will fade away by 03:41, peaking at just 25° above the horizon.90000479 40P/Vaisala 1 will become visible in December, 16. After being too close to the Sun to observe, it will reappear in the night sky. Starting from December, 16, 90000479 40P/Vaisala 1 can be seen again, providing a good opportunity for observation.
40P/Vaisala 1 Visibility Timetable on December 16
40P/Vaisala 1 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 18% illuminated | 01:22 | -1° |
| 40P/Vaisala 1 transit | 07:10 | 46° |
| Moon Set | 11:50 | 11° |
| 40P/Vaisala 1 set | 12:48 | |
| Astrosession begin | 16:24 | -42° |
| 40P/Vaisala 1 rise | 01:32 | |
| Astrosession end | 03:41 | 25° |
| Civil sunrise | 04:46 | 35° |
| Sunrise | 05:17 | 39° |
Track 40P/Vaisala 1 Position Throughout the Night
← Tue, 16 December 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe 40P/Vaisala 1 changing position in the night sky.
40P/Vaisala 1 Description
40P/Vaisala 1, designated as 90000479 40P/Vaisala 1, is an Encke-type comet. At the moment, 90000479 40P/Vaisala 1 is 2.425 AU (362,774,836 km) from Earth, and it is located in the constellation Virgo.Current position of 40P/Vaisala 1 in Solar System
| Date | Tue, 16 December 2025 |
| Distance from Earth to 40P/Vaisala 1 | 2.4205 AU (362,101,646km) |
| Elongation | 45° |
| Angular diameter | " |
| Magnitude | 17.1 |
Finder Chart for 40P/Vaisala 1
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| Object name | 90000479 40P/Vaisala 1 |
| Field of view | |
| Limiting magnitude | |
| 90000479 40P/Vaisala 1 coordinates | 14.64909, -6.81022 |
| Center coordinates | 14.64909, -6.81022 |
Annual motion of 40P/Vaisala 1
| Date | Tue, 16 December 2025 |
| Twighlight start | 16:20 |
| Twighlight end | 03:35 |
| Twighlight duration | 11h 15m |
| Rise | 01:29 |
| Set | 12:44 |
| Elevation at transit | 46° |
| Transit time | 07:06 |
| Equatorial coordinates | RA: 14h 41m 25s", Dec: -6° 57' 20s |
| Magnitude | 17 |
| Constellation | Virgo |
The graph illustrates the annual visibility pattern of a 40P/Vaisala 1, providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the 40P/Vaisala 1 is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the 40P/Vaisala 1 is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
Astrometric & Physical Parameters of 90000479 40P/Vaisala 1
Coordinates & Visibility
| Right Ascension | 14.64909° |
| Declination | -6.81022° |
| Magnitude | 17.1 |
| Constellation | Virgo |
| Elevation | 25.7° |
| Azimuth | 122.2° |
Acknowledgments
We acknowledge NASA's Jet Propulsion Laboratory (JPL) for providing essential data on asteroids and comets through their Small-Body Database (SBDB) and Center for Near-Earth Object Studies (CNEOS). Their continuous efforts in tracking and cataloging these celestial bodies make it possible to offer accurate and up-to-date information on their positions, orbits, and physical characteristics.