AAVSO Alert Notice 498Event: Nova Cephei 2014 = TCP J20542386+6017077
Discovered by: Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan)
Discovery magnitude: unfiltered CCD magnitude 11.7, using a 105-mm f/4 camera lens + SBIG STL6303E camera
Discovery date: 2014 Mar. 8.792 UT
Coordinates: R.A. 20 54 23.75 Dec. +60 … Read the rest of this article
AAVSO Alert Notice 4971. Event: Nova Sagittarii 2014 = PNV J18250860-2236024
Discovered by: Sigeru Furuyama (Tone-machi, Ibaraki-ken, Japan) and reported by S. Nakano (Sumoto, Japan)
Discovery magnitude: unfiltered CCD magnitude 8.7, using a 200-mm f/2.8 camera lens + BJ-42L camera
Discovery date: 2014 Jan. 26.857 UT
Coordinates: R.A. 18 25 … Read the rest of this article
AAVSO Alert Notice 491Event: V556 Serpentis = Nova Ser 2013 = PNV J18090346-1112345
Discovered by: Koichi Itagaki (Teppo-cho, Yamagata, Japan), reported by S. Nakano (Sumoto, Japan)
Discovery magnitude: unfiltered CCD magnitude mag 12.3, using a 0.21-m reflector
Discovery date: 2013 Nov. 24.384 UT
Coordinates: R.A. 18 09 … Read the rest of this article
Astronomers using NASA’s Chandra X-ray Observatory have taken a major step in explaining why material around the giant black hole at the center of the Milky Way Galaxy is extraordinarily faint in X-rays. This discovery holds important implications for understanding black holes.
New Chandra images of Sagittarius A* (Sgr A*), which is located about 26,000 light-years from Earth, indicate that … Read the rest of this article
An amateur video of a concert in Salta, Argentina captured footage of a meteor exploding in the night sky, lighting the sky briefly on April 21, 2013.
The spectacle happened at about 3.30am local time (6.30am GMT), according to local media reports.
The light the meteor created was so bright that it turned the night sky into day as it … Read the rest of this article
AAVSO Alert Notice 467Discovered by: Shigehisa Fujikawa (Kanonji City, Kagawa Prefecture, Japan, reported by Mitsuru Soma, National Astronomical Observatory of Japan).
Discovery Magnitude: magnitude 9.4 C using a 105mm camera lens+CCD
Discovery date: 2012 Aug. 09.8048 UT
Coordinates: 06 39 38.74 +05 53 52.0 (2000.0)
Spectra: Spectra by Stephane Charbonnel … Read the rest of this article
AAVSO Alert Notice 465Discovered by: Tadashi Kojima (Tsumagoi, Agatsuma-gun, Gunma-ken, Japan) (reported by S. Nakano (Sumoto, Japan)
Discovery Magnitude: mag 12.6 on two frames using a Canon EOS 40D camera (+ 150-mm f/2.8 lens)
Discovery date: 2012 July 16.512 UT
Coordinates: R.A. 18 19 37.0 Decl. -19 07 … Read the rest of this article
AAVSO Alert Notice 463Discovered independently by:
– Koichi Itagaki (Yamagata, Japan, reported by Hitoshi Yamaoka, Kyushu University)
– Yukio Sakurai (Mito, Ibaraki-ken, Japan)
Discovery Magnitude: Read the rest of this article
– Itagaki: magnitude 10.3 on an unfiltered CCD image taken with a 0.21-m reflector
– Sakurai: magnitude 9.9 on four 20-s frames taken …
ESA’s Mars Express has provided images of a remarkable crater on Mars that may show evidence that the planet underwent significant periodic fluctuations in its climate due to changes in its rotation axis.
On 19 June 2011, Mars Express pointed its high-resolution stereo camera at the Arabia Terra region of Mars, imaging the Danielson and Kalocsa craters.
Read the rest of this article
High-Resolution Stereo Camera …
Event: Nova in Scorpius
Nova Sco 2011 No. 2 = PNV J16364440-4132340 = PNV J16364300-4132460
Discovered Independently by:
– John Seach (Chatsworth Island, NSW, Australia)
– Yuji Nakamura (Kameyama, Mie, Japan)
Discovery Date: Read the rest of this article
– Seach: 2011 Sep. 06.37 UT (JD 2455810.87)
– …
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