Orbital elements:
2017 MD1 Earth MOID = 0.0005 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 47.04143 (2000.0) P Q
n 0.36435461 Peri. 28.55066 -0.96428565 +0.26486435
a 1.9414216 Node 166.80822 -0.24322489 -0.88511316
e 0.5785532 Incl. 0.06540 -0.10485630 -0.38265072
P 2.71 H 24.6 G 0....
The Triassic-Jurassic extinction event marks the boundary between the Triassic and Jurassic periods, 199.6 million years ago, and is one of the major extinction events of the Phanerozoic eon, profoundly affecting life on land and in the oceans. [url=http://en.wikipedia.org/wiki/Triassic%...
Title: The nuclear starburst in Arp 299-A: From the 5.0 GHz VLBI radio light-curves to its core-collapse supernova rate Authors: M. Bondi, M. A. Perez-Torres, R. Herrero-Illana, A. Alberdi The nuclear region of the Luminous Infra-red Galaxy Arp 299-A hosts a recent (\simeq 10 Myr), intense burst...
HMS Queen Elizabeth sets sail from Rosyth for sea trials The Royal Navy's new aircraft carrier has left its home port for the first time. HMS Queen Elizabeth - one of two new carriers being built at Rosyth dockyard in Fife at a cost of more than £6bn - is to begin sea trials. The ship passed under the Forth B...
China plans to spend 7 - 8 years developing a new-generation large carrier rocket, called "Long March V", to be used for launching a space station. China's 120-ton class liquid oxygen/kerosene engine for the new-generation carrier rocket went through a whole-vehicle test in the m...
The new Astonomy Swicki is an Astronomy Search Engine, er, to search for astronomy related information.
It is an intelligent community-trained Search Engine - the more it is used, the more it learns about what sites are useful to the community of users.
[url=http://astronomy-search-en...
Tau-Aquariids meteor shower in constellation Aquarius. The meteor shower is active from the 27th June to 6th July. ZHR=7.1 Velocity=66.2km/s Radiant: RA=22.9h/343° Dec=-11.8°
A meteor shower from C/2015 D4 (Borisov) on July 29? Discovered on 2015, February 23rd, by Gennady Borisov, the comet C/2015 D4 (Borisov) is a long-period one, which will be back in the inner Solar system in more than 200 years. Its last perihelion was thus in October 2014, just before it was discovere...
SpaceX set to launch satellites from California air base SpaceX is going for a weekend double-header with a planned launch from Vandenberg Air Force Base, California, just two days after a successful satellite launch from Florida. A SpaceX Falcon 9 rocket is scheduled to lift off at 1:25 p.m. PDT Su...
Water Vapour on Betelgeuse as Revealed by TEXES High-Resolution 12 Micron SpectraAuthors: N. Ryde, G. M. Harper, M. J. Richter, T. K. Greathouse, J. H. Lacy
The outer atmosphere of the M supergiant Betelgeuse is puzzling. Published observations of different kinds have she...
Title: Generating realistic synthetic meteoroid orbits Author: Denis Vida, Peter G. Brown, Margaret Campbell-Brown Context. Generating a synthetic dataset of meteoroid orbits is a crucial step in analysing the probabilities of random grouping of meteoroid orbits in automated meteor shower...
Title: Kinematics of Ionised Gas at 0.01 AU of TW Hya Authors: M. Goto (1), A. Carmona (2), H. Linz (1), B. Stecklum (3), Th. Henning (1), G. Meeus (4), T. Usuda (5) ((1) MPIA, (2) University of Geneva, (3) Thüringer Landessternwarte Tautenburg, (4) Universidad Autónoma de Madrid, (5) Subaru Telesco...
Are comets born in great swarms? The puzzling abundance of comets in short solar orbits has led a pair of astronomers to suggest that they are fragments of larger bodies that crumbled as they entered the inner solar system. Short-period comets take less than 200 years to circle the sun and are thought...
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