Talk:Mariner 9

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Current location?[edit]

Where is this probe now? Is it still in Mars orbit?

Yes, it is still in Mars orbit, it's orbit is stable until at least 2022.
Where did that fact come from? Andy120290 22:13, 22 October 2006 (UTC)
I don't know, but the German website claims it is and will stay in orbit until entering the Martian atmosphere probably in "the next decade". --Roentgenium111 (talk) 14:13, 28 February 2012 (UTC)
Found a source. --Roentgenium111 (talk) 14:27, 28 February 2012 (UTC)

Photos attributed to Mariner 9 are incorrect[edit]

The photos of Scamander Vallis and Warrego Velles are not from Mariner 9. They are MOC images from the Mars Global Surveyor. This needs to be corrected. Schaffman (talk) 22:13, 27 November 2010 (UTC)

Done, but you are welcome to be bold to correct obvious mistakes. ChiZeroOne (talk) 22:48, 27 November 2010 (UTC)

External links modified[edit]

Hello fellow Wikipedians,

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Question? Archived sources still need to be checked

Cheers. —cyberbot IITalk to my owner:Online 03:43, 4 September 2015 (UTC)

Data transmission Error correction clarification[edit]

"The data words used during this mission were 6 bits long, which represented 64 grayscale values. Because of limitations of the transmitter, the maximum useful data length was about 30 bits. Instead of using a repetition code, a [32, 6, 16] Hadamard code was used, which is also a 1st-order Reed-Muller code. Errors of up to 7 bits per word could be corrected using this scheme."

Am I reading this wrong? The word length was 6 bits, the ECC could correct up to 7 bits per word. ? Confused. (talk) 18:59, 14 March 2016 (UTC)Sam, UK

Out of 32 bits in the word 7 bits could be wrong. The article was correct but poorly worded. I corrected it. Ruslik_Zero 19:26, 14 March 2016 (UTC)