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Rocky Worlds DDT : Schedule
Introduction
The Rocky Worlds DDT Program will use both JWST in the infrared and HST in the UV-to-optical to characterize rocky planets and their host M dwarfs.
On the JWST side, the program will gather time series observations aimed to detect planetary secondary eclipses (when the planet passes behind its host star from our perspective) at 15 µm using the MIRI instrument to measure thermal emission from its dayside.
On the HST side, the program will gather UV-to-optical spectra in order to characterize the high-energy output of the host M dwarf, using both the COS and STIS instruments in order to cover this broad spectral range. The versatile HST instrumentation will also allow us to view these data as time series, allowing the program to detect stellar flux variations that might arise, for example, from stellar flares.
program information
HST (Cycles 32/33 allocation) JWST (Cycle 3 allocation)
goto HST 17904 Program Information goto JWST 9235 Program Information
download Download the HST 17904 APT file download Download the JWST 9235 APT file
Scheduling of Eclipses
Last update : 18JUN2025
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
2025
JWST CYCLE 3
CYCLE 4
HST CYCLE 32
CYCLE 33
2026
CYCLE 4
CYCLE 5
CYCLE 33
CYCLE 34
2027
CYCLE 5
CYCLE 6
CYCLE 34
CYCLE 35
Eclipse 1
Observation #1
Exposure Duration: 5.38h
Planned for: June 22, 2025
Status: Flight Ready
Eclipse 2 (Checkpoint 1)
Observation #2
Exposure Duration: 6.13h
Planned for: July 16, 2025
Status: Implementation
Eclipse 3
Observation #3
Exposure Duration: 6.17h
Planned for: January 28, 2026
Status: On Hold
Eclipse 4
Observations #4 and #5
Exposure Duration: 7.3h
Planned for: January 30, 2026
Status: On Hold
Visits: 07 08
Orbits: 3
Instrument: STIS
Planned for: May 26 - Jun 03
Status: Flight Ready
Visits: 07 08
Orbits: 3
Instrument: STIS
Planned for: Jul 15 - Jul 17
Status: Flight Ready
Visits: 01 02 03 05
Orbits: 4
Instrument: COS
Planned for: Jan 26 - Feb 16
Status: Implementation
Visits: 01 02 03 05
Orbits: 4
Instrument: COS
Planned for: Mar 20 - Mar 30
Status: Implementation
Visits: 06
Orbits: 2
Instrument: STIS
Planned for: Apr 13 - Apr 24
Status: Implementation
Visits: 06
Orbits: 2
Instrument: STIS
Planned for: May 25 - Jun 08
Status: Implementation
quick look
data analysis
mast
program information
Scheduling of Eclipses
Last update : 17JUN2025
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
2025
JWST CYCLE 3
CYCLE 4
HST CYCLE 32
CYCLE 33
2026
CYCLE 4
CYCLE 5
CYCLE 33
CYCLE 34
2027
CYCLE 5
CYCLE 6
CYCLE 34
CYCLE 35
quick look
data analysis
mast
program information
Scheduling of Eclipses
Last update : 17JUN2025
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
2025
JWST CYCLE 3
CYCLE 4
HST CYCLE 32
CYCLE 33
2026
CYCLE 4
CYCLE 5
CYCLE 33
CYCLE 34
2027
CYCLE 5
CYCLE 6
CYCLE 34
CYCLE 35
quick look
data analysis
mast
program information
Scheduling of Eclipses
Last update : 17JUN2025
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
2025
JWST CYCLE 3
CYCLE 4
HST CYCLE 32
CYCLE 33
2026
CYCLE 4
CYCLE 5
CYCLE 33
CYCLE 34
2027
CYCLE 5
CYCLE 6
CYCLE 34
CYCLE 35
quick look
data analysis
mast