Archive for July, 2011

5 hours to closest approach

Closest approach of the comet Elenin and the spacecraft STEREO-B will be exactly in 5 hours, on 12:40 UT. Objects will be pass at a distance of 7,400,196 km of each other. Observations of the comet will begin in less than a day.

SpaceObs.org online again!

Today my site is online again. While it was working in test mode on the new hosting.

Welcome!

First image of comet Elenin from the Space

LATMOS / IPSL

The first image of the comet Elenin from the spacecraft was received on July 22, by SWAN instrument (Solar Wind Anisotropies), installed on the SOHO space solar observatory. The comet was detected on the images from July 22 by Vladimir Bezugly.

Image resolution is small, but comet is visible in the coordinates – 160 0 (slightly right from the center of image). Images taken at distance about 240,000,000 km (1.6 AU). I would like to remind you, that two days later, comet C/2010 X1 (Elenin) will be in 32 times closer to the other spacecraft – STEREO-B.

The test roll was succesful, let’s wait for August 1

NASA / GSFC

Karl Battams, one of the STEREO team members confirmed the successful test roll of the spacecraft to 135 degrees. Carl noted that the angle of roll is chosen very well. From 1 to August 5, the comet will be visible in the instrument HI-2B, then observations will be continue with HI-1B camera. The first data will be transmitted to Earth on August 2-3 and will be available from August 4.

The comet may be a very bright and one of the main objectives of the observations will be study the effect of forward scattering. This effect can increase the brightness of comet by several magnitudes and we will see this effect from SOHO spacecraft, in late September.

Observation’s shedule you can find here.

STEREO-B test roll

Less than an hour, the spacecraft STEREO-B will start a scheduled, test of 135 degree roll. The maneuver takes place from 12-14 UT.

July 2011
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