A spectacular fireball was detected by the Meteorite Orbits Reconstruction by Optical Imaging network (MOROI) in the morning of 3rd of March, 2021, at 05:58 local time (03:58:39 UT). The bolide flared over Suceava county for 5 seconds, reaching a maximum stellar magnitude of -11 (+/- 1). The meteor brightness matched that of the Moon, which was 85% illuminated at the time.
As seen from the city of Suceava, the object traveled from West towards East, displaying fragmentation features in the second half of the atmospheric path. Four other stations in Romania have detected the bolide. From Bacău and Bârlad, the frames during the maximum brightness were saturated, while data from Baia Mare station (250km away) allowed a proper measurement of luminosity, due to the higher extinction close to the horizon. Investigations for trajectory and orbit reconstruction are underway.
Currently, MOROI network is in the process of integration with the international FRIPON network (Fireball Recovery and InterPlanetary Observation Network). The end goal is to fill the gaps between asteroid and meteorite science, by studying the meteoroid interactions with atmosphere, and computing the location where the surviving fragments might land.contact: simon.anghel (at) astro.ro
The first active region of the solar cycle 25 was observed on December 20, 2016. The minimum activity period between solar cycle 24 and the current cycle was approximately double compared to other similar periods.
After almost 4 years, solar cycle 25 is picking up pace!
The active region NOAA 12776 became visible on October 15 and passed the western solar limb on October 27. In the right-hand side image this region is observed by the Bucharest Observatory on October 21 when it was situated at 14° southern latitude and 45° western longitude. On October 24, a B2.3 class flare initiated from this region was recorded by GOES.
Between October 27 and November 2 another active region (NOAA 12778) was visible on the Sun and generated several C-class flares.
The solar activity as seen in the sunspot number, the number and intensity of flares, as well as other eruptive phenomena, will constantly increase over the next few years.
Today we can see two active regions on the Sun and the sunspot number is 21.
Berthelot Observatory Survey recently reported the detection of an unusual tail of comet 246P/NEAT. The discovery, submitted to Central Bureau for Astronomical Telegrams, was published as CBET 4799. The CBET is available bellow:
Further to CBET 4793, A. Sonka, M. Birlan, and A. Nedelcu, Berthelot Observatory, Astronomical Institute of the Romanian Academy, report on the unusual shape and tail of comet 246P from CCD observations obtained with a 0.38 m f/8 reflector (39'.8 x 28' field-of-view) at Berthelot Observatory on May 12, 21, and 23. A 60-s unfiltered exposure taken on May 23 shows an obvious 3' fanlike tail in p.a. 292.8 degrees, while 46 stacked images having a total exposure time of 0.8 hr shows a long tail visible at p.a. 296.8 degrees; the tail is at least 28' long and shows a 5'.4-long discontinuity, starting at 3' from the comet's coma (after the discontinuity ends, the tail continues and possibly extends outside the field-of-view. The comet's tail is also visible in images taken on May 12 and 21 at p.a. 296.8 degrees. The discontinuity is 5' long on May 12 and 8' long on May 21. Additional unfiltered CCD total-magnitude and coma-diameter measurements for comet 246P: Mar. 20.27 UT, 15.0, 40" (H. Sato, Tokyo, Japan, 0.25-m astrograph near Mayhill, NM, USA; fan-like tail 1'.5 long toward p.a. 250-290 degrees); May 29.44, 14.6, -- (K. Kadota, Ageo, Japan, 0.25-m reflector). Visual total-magnitude and coma-diameter estimates by P. Camilleri, Katherine, NT, Australia (0.40-m reflector): June 9.47, 13.8, 1'; June 14.45, 14.0, 1'.contact: sonka (at) astro.ro