1st Birthday Cards, Steve / Jake - DO NOT READ TILL 668A Options

[djellison]

Just to let everyone know, cards are going in the post today to the MER Engineering team at JPL and the MER Science team at Cornell...printed inside is the message

"To a special little person,
On a very special day,
Have a very Happy Birthday,
You're one year old today!"

And I've written
in the one to the Engineering team..

To Jake, Byron, Bill and the MER Engineering Team,
HAPPY SOL 668

Many thanks for your hard work, dedication and the director updates, your efforts in keeping them roving are hugely appreciated

With best wishes

Doug Ellison and everyone at Unmannedspaceflight.com
(PS - Flight Director gets the badge!)


and in the one to the Science team

To Steve, Jim and the MER Science Team,
HAPPY SOL 668

Many thanks for your hard work and outreach efforts in sharing the greatest field trip the solar system has ever seen

With best wishes
Doug Ellison and everyone at Unmannedspaceflight.com
(PS - SOWG Chair gets the badge!)
(PPS - Sorry - no Cake - it's an ITAR thing)

And on the back of each envelope

NOT TO BE OPENED UNTIL SOL 668A!!

I checked with SS and I managed to find appropriate addresses which should get thru to the right people.

Given the state of the postal service here, I thought it best to get them sent off sooner rather than later. JUST after I sealed the envelopes, I thought of writing (PPS - Sorry -No Cake - it's Pathfinder heritage and needs a total redesign) in the engineering one


Doug

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[dot.dk]

Isn't there 669 SOLs in a martian year??

[RNeuhaus]

Isn't there 669 SOLs in a martian year??

You are right.
Sidereal Rotation Period (Length of Day)

1.026 Earth days 24.62 hours
By Comparison: Earth's rotation period is 23.934 hours.

Sidereal Orbit Period (Length of Year)

1.8807 Earth years
686.93 Earth days

Mars soles = 686.93 Earth days * (1 Mars days/1.026 Earth days) = 669.522 Mars days

Closer to 670 Mars days than ones of 669.

Rodolfo

P.S. As there is a disparity of numbers. So why not celebrate the birth party for two days starting from the sol 668 and ends the sol 670.