The 37 - 82 metre wide asteroid 2015 MN11 will make a close pass (12.5 LD, 0.0322 AU) travelling at 21.92 km/second, to the Earth-Moon system on the 24th June 2015 @ 23:15 UT ±00:01. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
The 8 - 19 metre wide asteroid 2015 KK57 will make a close pass (8.3 LD, 0.0214 AU) travelling at 1.50 km/second, to the Earth-Moon system on the 23rd June 2015 @ 04:00 UT ±00:05. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
The 280 - 620 metre wide asteroid 2014 YP15 will make a close pass (58.7 LD, 0.1509 AU) travelling at 13.69 km/second, to the Earth-Moon system on the 23rd June 2015 @ 07:01 UT ±00:01. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
The 31 - 68 metre wide asteroid 2014 YT34 will make a close pass (66.9 LD, 0.1718 AU) travelling at 6.34 km/second, to the Earth-Moon system on the 23rd June 2015 @ 10:18 UT ±01:00. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
The 53 - 120 metre wide asteroid 2015 LM24 will make a close pass (21.7 LD, 0.0558 AU) travelling at 13.44 km/second, to the Earth-Moon system on the 23rd June 2015 @ 19:58 UT ±00:01. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Sun Unleashes Mid-level Flare The sun emitted a mid-level solar flare, peaking at 2:23 p.m. EDT on June 22, 2015. NASAs Solar Dynamics Observatory, which watches the sun constantly, captured an image of the event. Solar flares are powerful bursts of radiation. Read more
Title: Chandra X-ray Observations of Galaxies in an Off-Centre Region of the Coma ClusterAuthors: A.E. Hornschemeier, B. Mobasher, D.M. Alexander, F.E. Bauer, M.W. Bautz, D. Hammer, B.M. Poggianti
Researchers have performed a pilot Chandra X-ray telescope survey of an... < 10^-3).
They do not have sufficient numbers of X-ray detected galaxies to directly measure the galaxy X-ray Luminosity Function (XLF). However, since they have a well-measured optical LF, they took this low X-ray to optical flux ratio for the 7 spectroscopically confirmed galaxies to translate the optical LF to an XLF.
They find good agreement with Finoguenov et al. (2004), indicating that the X-ray emission per unit optical flux per galaxy is suppressed in clusters of galaxies, but extends this work to a specific off-centre environment in the Coma cluster. Finally, They report the discovery of a region of diffuse X-ray flux that might correspond to a small group interacting with the Coma Intra-Cluster Medium (ICM).
Read More (PDF)
New Polish asteroid: Krzesinski We have another asteroid in the sky, bearing the name of the Pole. As of now, the asteroid number 114025 will bear the name of the Polish astronomer Jerzy Krzesinski. Dr. Krzesinski works in the Department of Astronomy, Pedagogical University in Kraków and is employ...
Urthecast video cameras to circle globe Canadian group Urthecast plans to put a 16-satellite constellation in orbit to image the Earth. Urthecast already has a pair of cameras on the International Space Station, one of which returns short videos. Read more
Near-infrared images of the active galaxy NGC 1097, obtained with the NACO adaptive optics instrument on ESO's Very Large Telescope, disclose with unprecedented detail a complex central network of filamentary structure spiralling down to the centre of the galaxy. These observations p...
Title: I-Love-Q relations for gravastars and the approach to the black-hole limit Author: Paolo Pani The multipole moments and the tidal Love numbers of neutron stars and quark stars satisfy certain relations which are almost insensitive to the star's internal structure. A natural question is w...
Title: Photometric study and period analysis of the contact binary XZ Leonis Author: Changqing Luo, Xiaobin.Zhang, Licai Deng, Kun Wang, Yangping Luo We present multi-color CCD photometry of the neglected contact binary XZ Leo. Completely covered VRI band light curves and four times of minimum...
Comet P/2008 U1 (McMillan) was discovered by R.S. McMillan (LPL/Spacewatch II, University of Arizona) on the 18th October, 2008. The preliminary orbital elements of the comet indicate a perihelion passage on the 12th May 12, 2008 at a distance of 2.523942 AU from the Sun, and a 8.13 year period. [...
1 2
)
(Preview)
