Observation Sector 4

TESS Observation Sector 4 is comprised of observations made during orbits 15 and 16 of the TESS mission.  Observations of Sector 4 extend from 19 October to 15 November, 2018. The regions of the sky observed during Sector 4 are shown at right. The targets observed during Sector 4 are below.

Pointing

During Sector 4, the instrument axis is pointed to 38° ecliptic longitude and -54° ecliptic latitude.  The orientation of the camera array in celestial coordinates is
RA (J2000): 55.0070°
Dec (J2000): -36.6420°
Roll (deg): 203.83°
The coordinates of the centers of the fields-of-view of the four cameras are given in the table below.
CameraRADecRollEcliptic LongitudeEcliptic Latitude
141.808430-2.760022-71.83912538.48-18
249.880584-25.468614-69.82825538.48-42
361.867630-47.521142117.45193638.48-66
489.997289-66.564950141.51714938.48-90
All coordinates are degrees (J2000)

Map of TESS camera fields-of-view for Sector 4 in ecliptic coordinates.  Camera 1 is red, camera 2 is magenta, camera 3 is blue, camera 4 is green.  The field of camera 4 looks distorted because it is centered on the ecliptic pole. The thin black line is the ecliptic; the thick black line is the galactic plane.

Map of TESS camera fields-of-view for Sector 4 in celestial coordinates.  Camera 1 is red, camera 2 is magenta, camera 3 is blue, camera 4 is green. The thin black line is the ecliptic; the thick black line is the galactic plane.

Targets for Sector 4

During Sector 4, 20,000 stars are observed at two-minute cadence, and full-frame images are collected every 30 minutes.
The list of targets observed at two-minute cadence are given on the Target List page. The target list includes the camera and CCD on which the target can be found, TIC ID, RA, declination, and TESS magnitude.

Target Characteristics

Distribution of TESS target magnitudes in the four cameras
Distribution of TESS target radius in the four cameras
Distribution of TESS target effective temperatures in the four cameras
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