It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
originally posted by: wshadow1
Based on their current positions, I'm going with Venus, Mars, Jupiter, and Mercury respectfully.
That's the only objects I can think of that would move that slowly across the field of view.
originally posted by: wildespace
a reply to: Vasa Croe
There are ways to simulate the SOHO's field of view using various planetarium software. I think ngchunter can do this, so looking forward to his analysis.
SOHO spacecraft "sits" in the L1 point, which is directly on the line between Earth and the Sun. Therefore, if I understand correctly, SOHO's view of the Sun and space around it is basically from the same angle as an observer's on Earth.
I have looked in Stellarium for what happens around the Sun on those dates. The planets Mercury and Jupiter are the closest to the Sun right now, but they are too far away to be seen in those LASCO C2 frames, and they move much slower.
One of my guesses is that those are stars, and the perceived motion is simply due to SOHO orbiting the Sun.
You are much more likely to spot planets in the LASCO C3 frames, as they are more wide-angle. In fact, if you run a LASCO C3 movie for 20-22 Sept, you'll see the background stars slowly move in the same direction as the points of light you posted about.
Verdict - those are stars.
P.S. I think I can even identify the four stars that you mention:
* Moving across the top of the Sun is Beta Virginis (β Vir), traditionally named Zavijava or Alaraph.
* Moving below the Sun is Upsilon Leonis (υ Leo).
* The faint star moving through the middle is IQ Vir, also known by a bunch of catalogue names like HIP 58002.
* Appearing from the left near the end of the movie is Eta Virginis (η Vir), traditionally named Zaniah.
Gotta love Stellarium!