
![]() Важные обновления от 20 ноября 2025 года: |

COMET C/2025 V2 (RANKIN)
David Rankin, Lunar and Planetary Laboratory, University of Arizona,
reports his discovery of another comet on CCD images obtained with the 1.5-m
Mt. Lemmon reflector on Nov. 2 (discovery observations tabulated below). Four
3-s exposures show a very condensed head of size 5" with no tail.
2025 UT R.A. (2000) Decl. Mag. Observer
Nov. 2.47358 9 39 25.70 +10 39 12.0 19.8 Rankin COMET C/2025 V1 (BORISOV)
Gennadii Vladimirovich Borisov, Nauchnij, Crimea, reports his discovery
of another comet, which appeared with a diffuse coma of diameter about 25"
with no tail, on CCD images obtained on Nov. 2 with a 0.50-m f/1.9 reflector
located at his MARGO Observatory. He noted that the total green magnitude
was 12.1 as measured inside a circular aperture of size 0'.5. The discovery
astrometry is tabulated below.
2025 UT R.A. (2000) Decl. Mag. Observer
Nov. 2.10833 12 06 21.52 - 5 35 30.7 12.0 Borisov
2.11762 12 06 26.83 - 5 34 58.6 12.1 "
2.12552 12 06 31.27 - 5 34 31.3 12.2 "
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/).