Comet C/2025 R2 Swan is growing brighter, but it is not be visible to the naked eye at this moment.
The original forecast suggested that this comet would not be visible to the naked eye; however, recent data suggest that it may reach magnitude 5.9 when it gets close to Earth on 21 October. ( Dime but still can be see by naked eyes )
Comet C/2025 R2 (Swan) will reach its closest point to Earth on 21 October 2025, at a distance of 40.2 million kilometres (25.0 million miles) or 0.27 astronomical units. Therefore, it may be visible around that time.
For astrologer’s information
Discovered on 11 Sep 2025 at 18 Libra
Perihelion on 12 Sep 2025 at 19 Libra
Cross Ecliptic at 4:16 UT 28 Sep 2025 at 9 Scorpio
Near Earth on 21 Oct 2025 at 19 Capricorn
Cross the Celestial Equator at 8:30 UT on 3 Nov 2025 at 6 Pisces
Furthermore, C/2025 R2 SWAN conjunction with Spica on 16 September.
Here is how it moves on ecliptic
11 Sep – 21 Sep: Libra
21 Sep – 08 Oct: Scorpio
08 Oct – 16 Oct: Capricorn
16 Oct – 23 Oct: Aquarius ( could be visible by naked eye around this time )
23 Oct – 31 Oct Pisces
If this comet becomes visible, the above degrees will become sensitive points.
The name Swan refer to “the Solar Wind Anisotropies (SWAN) instrument “, a camera on the Solar and Heliospheric Observatory (SOHO) spacecraft that detected the comet.
It’s very strange, and I couldn’t make it up. It could simply be a coincidence, but Comet 3i Atlas, an interstellar comet originating from outside the solar system, was suspected by Harvard researchers to be a UFO because its orbit nearly coincides with the ecliptic (shown in turquoise in the image).
What puzzles me now is that, on 11 September, we discovered another comet (shown in yellow in the image), which has already been designated C/2025 R2 SWAN. Its perihelion was 12 September. As it is close to the sun, it was not observed until it was near the sun.
I hadn’t originally expected it to be bright enough to be visible to the naked eye, but it has become brighter over the past few days, so I have started to pay attention.
However, when we calculated its orbit, we found that it was yet another comet close to the ecliptic, but in the opposite direction to 3i/Atlas.
Did you know? Comet orbits don’t always coincide with the ecliptic — they can appear anywhere in the sky.
It’s incredibly strange when they travel in opposite directions — maybe one is from the Empire and the other is from the Rebels?
