F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE Richard Wainscoat University of Hawaii, Institute for Astronomy for the PS1.

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Presentation transcript:

F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE Richard Wainscoat University of Hawaii, Institute for Astronomy for the PS1 Science Consortium

F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE Robert Jedicke University of Hawaii, Institute for Astronomy for the PS1 Science Consortium

F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE 2007 F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE 2008 F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE 2009 F IRST I NNER S OLAR S YSTEM R ESULTS F ROM T HE P AN -STARRS 1 T ELESCOPE 2010

PS4

PS1 prototype

3 PI S URVEYING (original) 1 st night tracklet r 2 nd night tracklet g 3 rd night tracklet i TRACK single lunation

3 PI S URVEYING (original) FIRST LUNATION SECOND LUNATION = 12 detections per derived object

R EPORTED D ETECTIONS >100 NEOs >70K Other Stuff

R EPORTED D ETECTIONS Heliocentric x (AU) Heliocentric y (AU)

P ROBLEMS Too few new derived objects No NEOs discovered

Camera Fill Factor physical

Camera Fill Factor overall

False Detections

TRACKLET D ETECTION E FFICIENCY V lim ≈21.5 (gri) ≈67% efficiency

3 PI S URVEYING (modified) TRACK in a single lunation = 12 detections per derived object 1 st night 3-4 detection tracklet r g i 4 th night tracklet 3 rd night tracklet r 2 nd night 3-4 detection tracklet i g

TRACK in a single lunation = 12 detections per derived object 1 st night 3-4 detection tracklet r g i 4 th night tracklet 3 rd night tracklet r 2 nd night 3-4 detection tracklet i g 3 PI S URVEYING (modified) 3-4 detection tracklet w w

2010 ST 3 chip gap removed by air force

ST3 ORBIT & DISCOVERY Discovery ≈0.1 AU V≈22 Characteristics H≈25 or D≈60m MOID≈0.04AU

22 NEO discoveries to date

WISE #1 LINEAR #2 CSS G96 #3 CSS 703 #4 Spacewatch #5 PS1 F51 # O BSERVATIONS

WISE LINEAR CSS G96 CSS 703 Spacewatch PS1 F51 #1 #2 #3 #4 #6 # N UMBERED O BJECTS

PS1 F51 #4 WISE LINEAR CSS G96 CSS 703 Spacewatch #1 #6 #2 #5 # U N -N UMBERED O BJECTS

Funding provided by: Air Force Research Laboratory PS1 Science Consortium NASA NEOO Program

2010 O BSERVATIONS

PS1 AT A GLANCE … 1.44 BILLION (!) pixels 60 ~5k X 5k OTA CCDs ~5 s second readout 6e- read-noise 10 m m pixels 0.26” per pixel image motion compensation w/ OTA CCDs 8,000 deg 2 /night 6 filters (g,r,i,z,y,w) minute re-visit time 2 visits/night 6 visits/lunation opposition & sweet-spots NEOs/month Surveying 1.8m f/4 R-C + corrector ~7 square degree FOV r ~ 22.5 in 30 s integration A  ~ 12 Haleakala, Maui, Hawaii Telescope Camer a

PS1 AT A GLANCE … 1.44 BILLION (!) pixels 60 ~5k X 5k OTA CCDs ~7 s readout (13s btw exp.) 6e- read-noise 10 m m pixels 0.26” per pixel image motion compensation w/ OTA CCDs ≤3,000 deg 2 /night 6 filters (g,r,i,z,y,w) minute re-visit time 2-4 visits/night visits/lunation opposition & sweet-spots 100s of NEOs/month w/ dozens discovered Surveying 1.8m f/4 R-C + corrector ~7 square degree FOV V ≥ 22.0 in 40 s w integration A  ~ 12 Haleakala, Maui, Hawaii Telescope Camer a