Scenario16

HST V3 Trajectory 16

Corkscrew approach around a rigid body tumbling target (551.16 s/turn about Z), LEO

Corkscrew approachLEO1000 frames15 s/frame90° FoVrigid bodystereo

Trajectory card & sample video

trajectory_16_card.png · HST_DatasetV3_16_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.
TrajectoryCorkscrew approach around a rigid body tumbling target (551.16 s/turn about Z), LEO. Helix radius 10 m · radial offset 25 m · initial along-track offset 40 m · angular rate 0.001 rad/s · along-track drift rate 0.0016 m/s · initial phase 2.0944 rad. Starts at 2025-03-10T07:00:00 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 · 21.8 MB

Configuration

Target orbit

Regime
LEO
NORAD ID
20580

Keplerian elements

Semi-major axis a (derived)
6873.3 km
Eccentricity e
0.0002156
Inclination i
28.4695°
RAAN Ω
355.1449°
Argument of perigee ω
63.5358°
Mean anomaly M
296.5457°

Mean motion & derived

Mean motion
15.23535899 rev/day
Orbital period
94.52 min
Mean altitude
495.2 km
// target two-line element set
1 20580U 90037B   25069.20268158  .00010480  00000-0  41763-3 0  9995
2 20580  28.4695 355.1449 0002156  63.5358 296.5457 15.23535899717560

Target spacecraft

Attitude mode
Tumbling
Rotation axis (body)
[0,0,1]
Rate
0.0114 rad/s
Period
551.16 s/turn
Initial body orientation
w 0.6952648549081447x 0.26013381617700365y 0.6664911185797824z 0.06875149500204292
Initial phase
0 rad
Attitude hold
Controlled

Articulation

Solar-panel Sun tracking
not enabled
TDRS antenna tracking
not enabled
Appendage motion
none — rigid body

Camera & render

Behaviour
Continuous target tracking
Attitude mode
Triad (two-vector) pointing
Primary
BodyFront → Target
Secondary
BodyUp → Sun
Attitude hold
Controlled
Target angle
constant 0°

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
Corkscrew approach
Step name
CorkScrewOrbitGenerator
Helix radius
10 m
Radial offset
25 m
Initial along-track offset
40 m
Angular rate
0.001 rad/s
Along-track drift rate
0.0016 m/s
Initial phase
2.0943951023931953 rad
Random seed
16

Timing

Start epoch (UTC)
2025-03-10T07:00:00.0000000Z
Frames
1000
Time step
15 s
Duration
15000 s
Duration (clock)
4 h 10 min 0 s
Orbits covered (derived)
2.65

Illumination

Class
sweeps through the run
Sun optical-axis angle
20° – 160°
Spotlight
Auto
// 180° = Sun directly behind the camera (target fully lit)
// ~165° = low phase angle · ~95° = high phase angle