Title: Mercury's resonant rotation from secular orbital elements Author: Alexander Stark, Jürgen Oberst, Hauke Hussmann We used recently produced Solar System ephemeris, which incorporate two years of ranging observations to the MESSENGER spacecraft, to extract the secular orbital elemen...
Title: Changes in the spectrum of Z Ursae Majoris during its rise through a maximum in June 2014 Author: David Boyd The semiregular variable Z UMa experienced a particularly deep minimum at the end of March 2014 followed by a three month rise to maximum. The rise and subsequent decline were followed w...
Orbital elements: P/2009 S1 (Gibbs) T 2009 July 24.990 TT MPC q 2.36593 (2000.0) P Q n 0.141860 Peri. 221.712 +0.927312 -0.330515 a 3.64108 Node 155.805 +0.335855 +0.941913 e 0.35021 Incl. 25.378 -0.165209 +0.059659 P 6.95 From 36 observations 2009 Sept. 20-22. [url=http://www.cfa.harvard.ed...
The 24 - 54 metre wide asteroid 2015 KV120 will make a close pass (27.6 LD, 0.0709 AU) travelling at 6.80 km/second, to the Earth-Moon system on the 3rd June 2015 @ 11:12 UT ±00:14. See more The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Orbital elements:
2012 KN18 Earth MOID = 0.0310 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 337.02029 (2000.0) P Q
n 0.22068509 Peri. 104.13279 +0.19926937 +0.97994322
a 2.7119856 Node 177.35960 -0.91295790 +0.18628953
e 0.6350142 Incl. 2.15402 -0.35608929 +0.07076364
P 4.47 H 24.5...
Orbital elements:
2015 KM57 Earth MOID = 0.0056 AU
Epoch 2015 June 27.0 TT = JDT 2457200.5 MPC
M 352.61281 (2000.0) P Q
n 0.37406467 Peri. 154.17936 +0.69685826 +0.71719985
a 1.9076773 Node 159.99546 -0.65983502 +0.64307034
e 0.5653250 Incl. 0.60261 -0.28108062 +0.26848635
P 2.63 H 25.4...
M15 - A Dense Swarm of Ancient Stars Messier 15, a dense globular visible from parts of the south but best positioned for those north of the equator. The extreme concentration of stars near the centre of this cluster suggests the presence of a black hole formed billions of years ago. [url=http://www....
Orbital elements:
2015 KH157 PHA, Earth MOID = 0.0154 AU
Epoch 2015 June 27.0 TT = JDT 2457200.5 MPC
M 39.80703 (2000.0) P Q
n 0.41274547 Peri. 51.08870 -0.71825583 -0.59094381
a 1.7865473 Node 89.50287 +0.46834140 -0.80100130
e 0.5305560 Incl. 21.54876 +0.51455311 -0.09582445
P 2.39 H 2...
The original Apple Computer, also known retroactively as the Apple I, or Apple-1, is a personal computer released by the Apple Computer Company (now Apple Inc.) in 1976. Read more
This Hubble Space Telescope image of the face-on spiral galaxy Messier 101 (NGC 4547, The Pinwheel Galaxy), is the largest and most detailed photo of a spiral galaxy that has ever been released from Hubble.
The galaxy’s portrait is actually composed of 51 individual exposures ta...
Sun 01.06.15; Sunspots 12356 and the eastern limb captured with a 100mm f5 Helios refractor and vesta pro webcam. Motorised EQ5 Mount and Baader solar filter. Overcast sky.
Roughly a billion years from now, the ever-increasing radiation from the sun will have heated Earth into inhabitability; the carbon dioxide in the atmosphere that serves as food for plant life will disappear, pulled out by the weathering of rocks; the oceans will evaporate; and all living things w...
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