Tween panel
With a tween selected in the timeline

A sun tween selected in the timeline, and the Tween panel with object, start, duration and easing

When it appears

With a tween selected in the timeline. One panel for all tweens.

Fields

FieldWhat it does
Objectthe animated object
Startwhen it starts, in seconds
Durationhow long it lasts, in seconds
Easinghow the value runs from start to end: 38 equations
Changesthe properties the tween changes

The values

The end values are not typed here: you change the object with the panels and on the canvas, with the playhead at the right time, and the tween picks them up. See Tweens and auto-key.