messenger mascs m1 flyby preliminary results. mascs flyby trajectories courtesy killen et al. 2008...
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MESSENGER MASCS
M1 Flyby Preliminary Results
MASCS Flyby Trajectories
Courtesy Killen et al. 2008 LPSC Abstract
TailsweepH, Na
spacecraft (S/C)time shown
~1 min
S, Na
H,O,O,Ca,K,Na
S, Ca, K, Na
MASCS at M1
Courtesy Killen et al. 2008 LPSC Abstract
Preliminary Results
• H, Na, and Ca observed• S and K not observed• First high spatial resolution observations of the Na tail
emission• First detection of the H tail emission• First time H and Na observed in the tail simultaneously• Ca detected in near-Mercury atmosphere• Spatial asymmetries seen in the Na and H emission –
confirms ground-based measurements of asymmetry• Killen et al. collected ground-based observations of the Na
emission from Kitt Peak’s McMath-Pierce Solar telescope during the flyby
Color Scale: 0 – 40 KRayleighs
Color Scale: 100 – 400 Rayleighs
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