Scenario34

HST V3 Trajectory 34

Cross-track pass around an articulated tumbling target (8377.58 s/turn about X), sun-synchronous LEO, velocity-fixed camera

Cross-track passLEO, high inclination (66.0°)1000 frames6.75 s/frame90° FoVarticulatedstereo

Trajectory card & sample video

trajectory_34_card.png · HST_DatasetV3_34_color.mp4
QuaternionRelative attitude of the target in the camera frame, per frame.
Target translationTarget position in the camera frame. tz is the range on the left axis (m); tx/ty use the right axis.
Optical-axis angleAngle from the chaser body front axis to the Sun, the Earth centre and the target — the annotation’s SunToCameraAngle, EarthToCameraAngle and TargetToCameraAngle. A flat 0° target trace means the chaser is pointed at the target.
Scene / illuminationBands along the bottom: eclipse or daylight, plus when the Earth and the Sun are inside the field of view.
TrajectoryCross-track pass around an articulated tumbling target (8377.58 s/turn about X), sun-synchronous LEO, velocity-fixed camera. Cross-track separation 19 m · along-track offset 37 m · direction angle 2.84489 rad. Starts at 2025-01-05T19:15:00 UTC.
PlaybackCentre camera, colour post-process, every rendered frame in order — 1000 frames at 30 fps = 33.3 s · 1024×1024 · H.264 · no audio · 10.2 MB

Configuration

Target orbit

Regime
LEO, high inclination (66.0°) — labelled sun-synchronous in the workbook
NORAD ID
46984

Keplerian elements

Semi-major axis a (derived)
7715.9 km
Eccentricity e
0.0008016
Inclination i
66.0424°
RAAN Ω
317.0607°
Argument of perigee ω
268.3972°
Mean anomaly M
91.6125°

Mean motion & derived

Mean motion
12.80930738 rev/day
Orbital period
112.42 min
Mean altitude
1337.7 km
// target two-line element set
1 46984U 20086A   25272.23379046 -.00000047  00000-0  59588-4 0  9990
2 46984  66.0424 317.0607 0008016 268.3972  91.6125 12.80930738226905

Target spacecraft

Attitude mode
Tumbling
Rotation axis (body)
[1,0,0]
Rate
0.00075 rad/s
Period
8377.58 s/turn
Initial body orientation
w 0.24011593050146335x-0.2701649889376898y-0.6886362202167301z 0.6285979437425241
Initial phase
0 rad
Attitude hold
Controlled

Articulation

Solar-panel Sun tracking
not enabled
TDRS antenna tracking
enabled
PV3_Antenna (frames 0–89)
0° → -90°
NV3_Antenna (frames 0–89)
0° → 90°
ApertureDoor (frames 258–301)
0° → -112°
ApertureDoor (frames 463–506)
-112° → 0°

Camera & render

Behaviour
Body-fixed to the anti-velocity axis — target drifts through the field of view
Attitude mode
Retrograde (anti-velocity) pointing
Attitude hold
Controlled
Target angle
oscillates 0–30°

Optics & render

Horizontal field of view
90° (default)
fx = fy (derived)
512.00
cx = cy
512
Cameras
Center · Right
Resolution
1024×1024 px
Pixel samples
32
Camera axes
−Z forward · +X right · +Y down

Relative trajectory

Generator
Cross-track pass
Step name
CrossTrackOrbitGenerator
Max cross-track separation
19 m
Along-track offset
37 m
Direction angle
2.844886680750757 rad
Random seed
33

Timing

Start epoch (UTC)
2025-01-05T19:15:00.0000000Z
Frames
1000
Time step
6.75 s
Duration
6750 s
Duration (clock)
1 h 52 min 30 s
Orbits covered (derived)
1.00

Illumination

Class
sweeps through the run
Sun optical-axis angle
45° – 130°
Spotlight
Auto
// 180° = Sun directly behind the camera (target fully lit)
// ~165° = low phase angle · ~95° = high phase angle