I'm making a scenario for the ATV-4 flight which launched some 30 days ago. For that I need accurate orbital elements for the International Space Station.
I've found several webpages with orbital elements for the ISS, but most of them only contain elements from a day or two ago, and nothing more. I can use the scenario editor and turn the date back to 5th of June, but I fear that it is inaccurate if you take all the perturbations into consideration (atmospheric drag, nonspherical gravity, etc.).
I've searched on both Orbiter-Forum and other places, and CelesTrak has been mentioned. I can find historical parameters for Zarya, but (if I read the TLE values right) only from the end of 1998 to the last days of 2004. Of course, that doesn't help at all.
I moved on, and found day-to-day elements for the ATV-4, but sadly not for the ISS.
Can anybody help me find historical accurate orbital elements for the International Space Station from the 5th of June 2013 ± 2-or-so days?
I've found several webpages with orbital elements for the ISS, but most of them only contain elements from a day or two ago, and nothing more. I can use the scenario editor and turn the date back to 5th of June, but I fear that it is inaccurate if you take all the perturbations into consideration (atmospheric drag, nonspherical gravity, etc.).
I've searched on both Orbiter-Forum and other places, and CelesTrak has been mentioned. I can find historical parameters for Zarya, but (if I read the TLE values right) only from the end of 1998 to the last days of 2004. Of course, that doesn't help at all.
I moved on, and found day-to-day elements for the ATV-4, but sadly not for the ISS.
Can anybody help me find historical accurate orbital elements for the International Space Station from the 5th of June 2013 ± 2-or-so days?