Comets


Comet 2

New Comet: P/2012 TK8 (Tenagra)

Discovery Date: October 6, 2012

Magnitude: 19.7 mag

Discoverer: Michael Schwartz (Nogales, AZ, U.S.A.), P. R. Holvorcem (Tenagra II Observatory)

P/2012 TK8
© Aerith NetMagnitude Graph.
The orbital elements are published on M.P.E.C. 2012-U41.

Comet

Splitting event in comet 168P/Hergenrother

Over the past few weeks, comet 168P/Hergenrother has been under intense scrutiny due to its strange behaviour, namely a 6 magnitude surge in its brightness in a matter of several nights. Simultaneously the central condensation became markedly brighter and sharper, whilst the coma was also seen to grow in size. This has triggered the attention of amateur and professional astronomers alike.

Most of the time these brightening events (comets are among the most unpredictable astronomical objects from themselves) originate from some activity within, or associated with, the nucleus of the comet. There were strong assumptions in the astronomical community on the possible emergence of some visible fragments in the coma, the potential consequences of a break-up of in the comet's nucleus.

There have even been a few claims relating to a sighting within the comet hunting community, however these turned out to be most likely false alarms, due to the unfavourable combination of seeing/instrumental resolution within the amateur community. Our team have been monitoring the evolution of this comet with a variety of instruments including the research grade Faulkes Telescopes, with sub arcsecond imaging capability.

Today...we found the fragment...

Comet 2

New Comet: C/2012 U1 (PANSTARRS)

Cbet nr. 3264, issued on 2012, October 22, announces the discovery of a new comet (discovery magnitude 21.0) by Pan-STARRS Survey on images obtained with the 1.8-m Pan-STARRS1 telescope at Haleakala on October 18.3. The new comet has been designated C/2012 U1 (PANSTARRS).

We performed some follow-up measurements of this object, while it was still on the neocp. Stacking of 5 R-filtered exposures, 120-sec each,obtained remotely, from Haleakala-Faulkes Telescope North on 2012, Oct. 22.45, through a 2.0-m f/10.0 Ritchey-Chretien + CCD under good seeing conditions, shows that this object is a comet: diffuse coma nearly 5" in diameter.

Our confirmation image:
C/2012 U1
© Remanzacco Observatory
M.P.E.C. 2012-U66 (including prediscovery Mount Lemmon Survey observations from Oct. 17.4) assigns the following preliminary parabolic orbital elements to comet C/2012 U1: T 2014 June 30.96; e= 1.0; Peri. = 58.03; q = 6.31 AU; Incl.= 66.73.

Comet

Update on Comet 168P/Hergenrother

Our team performed follow-up observations of comet 168P/Hergenrother on 2012, Oct. 22.4, remotely through the 2m, f/10 Ritchey-Chretien + CCD of Faulkes Telescope North (Haleakala) under good seeing conditions, and a scale of 0.3"/px. Comet 168P has recently undergone an outburst with its magnitude increasing from ~14-15 to magnituide ~9.5. For more info about the recent outburst of this comet, see our previous post here.

Recent observations posted on comet-images ml were showing a "cloud" of material trailing the nucleus in the anti-solar direction. In our image (stacking of 9 x 30-second exposures) is visible an unresolved and diffuse trail about 6" long and 3" wide in PA145.

Comet 168P
© Remanzacco Observatory
Below you can see a graph showing recent magnitude estimates of comet 168P.
Comet 168P Magnitude
© Remanzacco Observatory

Fireball 4

One-of-a-kind celestial happening will occur on Tuesday, October 23rd: Slooh space camera to broadcast a live view of comets converging in the night-sky

A fantastic, one-of-a-kind celestial happening will occur on Tuesday, October 23rd, as Comet 168P/Hergenrother and Comet C/2012 J1 (Catalina) will pass each other in space like ships in the night - but only during a very narrow viewing window. Slooh Space Camera will provide live coverage of this spectacular event on Tuesday, October 23rd, live on Slooh.com, free to the public starting at 2 p.m. PDT / 5 p.m. EDT / 21:00 UTC - accompanied by real-time discussions with Slooh President Patrick Paolucci, Slooh Outreach Coordinator Paul Cox, and Astronomy Magazine columnist Bob Berman. Viewers can watch live on their PC or iOS/Android mobile device.

Slooh was first alerted to this unusual event by long-time Slooh member Maynard Pittendreig; he and other members have been tracking both comets. The comets will appear close in the sky to fall within the reach of a single field-of-view of Slooh's robotic telescopes. The pair will have an apparent separation of 43.5 arcminutes, as shown in this sky chart: goo.gl/hq8hK Comet 168P/Hergenrother has been through a number of "outbursts" over the last 6-weeks. Each of these unexpected increases in brightness has been witnessed and actively imaged by Slooh members. The outbursts could be a sign that the comet nucleus is starting to break apart, which is why the comet is being observed every night by Slooh members. Comet C/2012 J1 (Catalina) has been a superb contrast to Hergenrother; exhibiting a far more stable and expected increase in brightness as it orbits the Sun. Both comets have shown relatively bright comas and small tails.

Comet 2

Blood rain heads for southern Sweden

Blood Rain
© The Local
Sweden could be hit by the meteorological phenomenon "blood rain" over the weekend, so-called due to its distinct red hue, according to forecasters.

"It is difficult to say but southern Sweden could well be in the danger zone," said Joakim Langner at Sweden's Meteorological Institute (SMHI) to the Aftonbladet daily.

Blood rain is a weather phenomenon first noted in literature in Homer's Iliad in the 8th century BC. Until the 17th century it was widely believed that the red rain from the sky was in fact blood and thus a bad omen.

However scientists now believe that the rain's distinct colour is caused by the accumulation of dust and particles gathered from the Sahara desert.

According to forecasters in Denmark, the country is set to get doused on Saturday with southern Sweden in line for a blood red shower later over the weekend.

The phenomenon is however far from unheard of in Sweden. According to Joakim Langner it occurs around every five years in Sweden, although is most commonly seen in the spring.

Langner explained that the blood rain poses no danger to the public, beyond leaving a stain on garden furniture and vehicles.

Whether the colour of the coming rains remains uncertain, SMHI is certain that it stands to be a wet weekend. Southern and western Sweden will be hit first, with the rainy from pushing up through Svealand as the weekend progresses.

Comet 2

New Comet: C/2012 T6 (KOWALSKI)

Cbet nr. 3259, issued on 2012, October 18, announces the discovery of a new comet (discovery magnitude 17.6) by R. A. Kowalski on Catalina Sky Survey images obtained with the 0.68-m Schmidt telescope on October 15.4. The new comet has been designated C/2012 T6 (KOWALSKI).

We performed some follow-up measurements of this object, while it was still on the neocp. Stacking of 7 R-filtered exposures, 30-sec each, obtained remotely,from the Siding Spring-Faulkes Telescope South on 2012, Oct. 16.63, through a 2.0-m f/10.0 Ritchey-Chretien + CCD under good seeing conditions,shows that this object is a comet: narrow tail nearly 13" long in PA 290 and a wide, fan-shaped tail about 20" long toward the North-northwest sharp coma about 7" in diameter.

Our confirmation image:
C/2012 T6
© Remanzacco Observatory
M.P.E.C. 2012-U39 assigns the following preliminary parabolic orbital elements to comet C/2012 T6: T 2012 Aug. 25.08; e= 1.0; Peri. = 196.47; q = 1.79 AU; Incl.= 34.28.

Comet 2

New Comet: C/2012 T5 (BRESSI)

Cbet nr. 3258, issued on 2012, October 18, announces the discovery of a new comet (discovery magnitude 18.6) by T. H. Bressi on CCD mosaic images taken with the Spacewatch 0.9-m f/3 reflector at Kitt Peak on October 14.4. The new comet has been designated C/2012 T5 (BRESSI).

According to its preliminary parabolic orbital, comet C/2012 T5 (BRESSI) has it perihelion on T 2013 Feb. 23 with q = 0.31 and it might reach the peak magnitude ~8. (graph generated using the software Orbitas.
C/2012 T5
© Remanzacco Observatory
We performed some follow-up measurements of this object, while it was still on the neocp. Stacking of 7 R-filtered exposures, 120-sec each,obtained remotely,from H06 (ITelescope network near Mayhill, NM) on 2012, Oct. 18.33, through a 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer shows that this object is a comet: compact coma about 5" in diameter and tail nearly 12" long in PA 270.

Comet 2

New Comet: P/2012 T7 (VOROBJOV)

Cbet nr. 3260, issued on 2012, October 18, announces the discovery of a new comet (discovery magnitude 20.1) by Tomas Vorobjov on three 120-s images that he took on October 15 remotely with Alexander Kostin (Houston, TX, U.S.A.) using a 0.81-m f/7 Ritchey-Chretien reflector located at the Mt. Lemmon SkyCenter via the Sierra Stars Observatory Network. The new comet has been designated P/2012 T7 (VOROBJOV).

We performed some follow-up measurements of this object, while it was still on the neocp. Stacking of 3 R-filtered exposures, 120-sec each,obtained remotely,from Haleakala-Faulkes Telescope North on 2012, Oct. 18.43, through a 2.0-m f/10.0 Ritchey-Chretien + CCD under good seeing conditions, shows that this object is a comet: narrow tail nearly 15" long in PA 270 elongated coma 6"x4" in the same direction.

Our confirmation image:
P/2012 T7
© Remanzacco Observatory

M.P.E.C. 2012-U40 assigns the following preliminary elliptical orbital elements to comet P/2012 T7: T 2012 June 16.58; e= 0.33; Peri. = 174.76; q = 3.78 AU; Incl.= 13.55.

Comet

Leading astrophysicists: Flu viruses arrive here on comets from outer space

Image
© Museo del Prado, MadridPieter Bruegel's "The Triumph of Death". Hell on Earth, the nightmare depicted by Flemish painter Pieter Bruegel in his mid-16th-century "The Triumph of Death" reflects the social upheaval and terror that followed the plague that devastated medieval Europe.
It made the festive season a misery for many and threw NHS policy into crisis. But the flu may have worse in store, according to scientists who claim to have discovered an alarming explanation for the epidemic - a virus from outer space.

Dismissing as dogma the conventional medical wisdom that flu is a virus passed by human contact, the distinguished astrophysicist Sir Fred Hoyle, and his colleague at Cardiff university, Chandra Wickramasinghe, warn that we may be on the brink of a global epidemic.

In a report to be published in the journal Current Science, they claim the outbreak was caused by dust deposited high in the atmosphere by passing comets being forced down to earth by energy generated by cooler patches on the sun's surface, known as sunspots.

They reach the peak of their activity, the maxima, every 11 years, coinciding, the scientists say, with all major flu outbreaks since 1761, including the 1918 Spanish flu pandemic blamed for 20m deaths worldwide. The latest cycle began to peak in September and the maxima is due sometime this year.

Comment: We're not too sure how much the 11-year Solar cycle can tell us about the impact of comet-borne viruses on seasonal flu outbreaks, but their main idea certainly makes a lot of sense.

New Light on the Black Death: The Viral and Cosmic Connection