Don’t know about you all, but I’ve been following the Rosetta fly-by with some interest for a week or so. The European Space Agency’s web page has been tracking it and updating it’s trajectory publicly for about a month now. It’s pretty much on course for what was set a long time ago. That part of the story is getting pretty mundane at this point.
This part of the story makes it a little more interesting. The Minor Planet Center tracks objects that orbit near Earth. They are part of the International Astronomical Union. This is not to be confused with NASA’s Near Earth Object program. I point this out for a reason. Starting not too long ago, the MPC started tracking 2007 VN84 and warned this thing could get REAL close to Earth. A few days ago, Denis Denisenko in Moscow noticed 2007 VN84 had the exact same trajectory as Rosetta. MPC immediately came to the conclusion 2007 VN84 was indeed Rosetta. Once figuring that out, MPC released the following statement:
The minor planet 2007 VN84 does not exist and the designation is to be retired.
This incident, along with previous NEOCP postings of the WMAP spacecraft, highlights the deplorable state of availability of positional information on distant artificial objects (whether in earth orbit or in solar orbit). The Distant Artificial Satellites Observations (DASO) page lists a number of such objects, but has to be updated on a fairly regular basis from five different sources and data is not always available for the timespans needed. A single source for information on all distant artificial objects would be very desirable.
This just leads me to wonder how Denis could figure it out and not MPC, which is assigned the duty of doing so? And, it also makes me wonder if they bother to read any news at all regarding man-made objects since the Rosetta fly-by has been all over various astronomy sites. I have no dog in this issue, but I knew Rosetta was coming for weeks.
My instinct tells me there are too many agencies doing the same thing and not talking to each other. The last thing we need when researching near Earth objects is beauracratic turf fighting. NEO and MPC need to be one and the same. If the IAU wants to help fund these types of services, then they need to join WITH NEO and not be totally detached from it as they obviously are now. Now, I’m no fan of NEO’s efforts either. But maybe, if they combine the efforts of the two, then we’ll get better information on something this important.