2025-09-13, 06:07 PM
CNEOS predicts that the recently discovered Amor class NEO, 2025 PJ1, will make a close approach on 2025-Sep-21 20:20±<00:01 UT at a distance of 0.02971 AU moving with V Relative=11.85 km/sec, H=22.2 magnitude, diameter 98 m - 220 m and 'Rarity'=1. As of Sep 13, there is a 42 day observation arc, the Condition Code=6 and the Earth MOID=0.0264803 AU. The solution date was 2025-Sep-13 06:19:10 PDT. The initial reported observation was by Pan-STARRS 2, Haleakala on 2025-08-02. The absolute magnitude (H) of 2025 PJ1 is just 0.2 magnitude too high at 22.2 magnitude to make MPC's list of Potentially Hazardous Asteroids (PHAs). CNEOS hasn't predicted any future close approaches.
Using MPC's elements for the epoch 2025 Sep 13 0000 UT, ST4.1.11.16 Visual Pro predicts that 2025 PJ1 will reach a peak brightness of 15.8 magnitude around midnight on September 22 traveling through Aquarius at 32"/minute. Close approach is predicted (to the nearest hour) on 2025 September 21 at 1600 EDT (2000 UT) with 2025 PJ1 0.03 AU distant traveling through Aquarius at 33.5"/minute, but in daylight below the horizon in Columbus, Ohio. Europe and Africa are the best locations to observe the close approach.
Here's the Object Info dialog for 2025 PJ1:
Observers should follow the directions in the "Important Thread" at the top of this forum section for instructions on downloading the most recent orbital elements into their minor planet database. This will give the most accurate position calculations.
Good hunting,
Phil S.
Using MPC's elements for the epoch 2025 Sep 13 0000 UT, ST4.1.11.16 Visual Pro predicts that 2025 PJ1 will reach a peak brightness of 15.8 magnitude around midnight on September 22 traveling through Aquarius at 32"/minute. Close approach is predicted (to the nearest hour) on 2025 September 21 at 1600 EDT (2000 UT) with 2025 PJ1 0.03 AU distant traveling through Aquarius at 33.5"/minute, but in daylight below the horizon in Columbus, Ohio. Europe and Africa are the best locations to observe the close approach.
Here's the Object Info dialog for 2025 PJ1:
Observers should follow the directions in the "Important Thread" at the top of this forum section for instructions on downloading the most recent orbital elements into their minor planet database. This will give the most accurate position calculations.
Good hunting,
Phil S.