COMET C/2025 R3 (PANSTARRS)
     Yudish Ramanjooloo, Institute for Astronomy, University of Hawaii,
reports the discovery of another comet in images obtained with the Pan-STARRS2
1.8-m Ritchey-Chretien reflector at Haleakala on images obtained on Sept. 8
UT.  Three of four 45-s i-band images taken in 1".2-1".3 seeing show a very
diffuse head of size 2".1-2".4 (full-width-at-half-maximum) with no visible
tail.  The discovery observations are tabulated below.

     2025 UT             R.A. (2000) Decl.       Mag.
     Sept. 8.46761    1 35 09.53   +38 01 33.1   19.8
           8.47923    1 35 08.53   +38 01 37.7   20.2
           8.49076    1 35 07.52   +38 01 42.2   20.7
           8.50241    1 35 06.56   +38 01 46.4   20.0

 
COMET C/2025 R2 (SWAN)
     On Sept. 10, Vladimir Bezugly (Dnipro, Ukraine) informed the Central
Bureau that he had found a moving object, possibly a comet, on low-resolution
public website hydrogen Lyman-alpha images obtained during Sept. 5-9 with the
Solar Wind Anisotropies (SWAN) camera on the Solar and Heliospheric Observer
(SOHO) spacecraft (see CBETs 4068, 4136, 4939, 8619, 8587, 8344, 8346; and
website URL http://swan.projet.latmos.ipsl.fr/). 

 
  COMET C/2025 R1 (ATLAS)
     A. Fitzsimmons, Queen's University, Belfast, reports the discovery of a
comet on CCD images taken on Sept. 3 UT with a 0.5-m f/2 Schmidt reflector at
Mauna Loa, Hawaii, in the course of the "Asteroid Terrestrial-Impact Last
Alert System" (ATLAS) search program.  He notes that seven 30-s exposures
show a very condensed head of size 9".0 (full-width-at-half maximum) in 6".3
seeing; stacked images show a compact coma approximately 10" in size with no
tail.  The discovery observations are tabulated below.

     2025 UT             R.A. (2000) Decl.       Mag.
     Sept. 3.55226    4 45 53.33   +62 43 04.6   19.3
           3.55505    4 45 53.44   +62 43 10.1   19.1
           3.56154    4 45 53.28   +62 43 28.4   19.3
           3.57357    4 45 53.10   +62 44 00.6   19.2
           3.57639    4 45 52.97   +62 44 06.5   19.0
           3.58426    4 45 53.11   +62 44 26.8   18.8
           3.59444    4 45 52.94   +62 44 53.9   19.3