OBSERVER SKY VIEW
Awaiting observer dataWhere to look
Compass projection of the current sky direction. The chart shows direction, not brightness or a photograph of the sky.
NASA/JPL HORIZONS EPHEMERIS
Where Is James Webb Now? JWST Live Location
NASA/ESA/CSA · Sun–Earth L2 region · Launched 2021-12-25
Around Sun–Earth L2
Webb follows a halo orbit around Sun–Earth L2, roughly 1.5 million kilometres beyond Earth away from the Sun. Earth distance varies; it is not a percentage of a journey or a fixed parking coordinate.
FROM EARTH NOWWaiting for dataSample timestamp will appear here
FROM SUN NOWWaiting for dataSample timestamp will appear here
ONE-WAY RADIO DELAY—Geometric light time to Earth
TIME SINCE LAUNCH—Launch date: 2021-12-25 · calendar-day estimate
Loading current samples independently of the map date.
Radio signal simulator
Estimate a signal’s travel time from a fixed distance sample. No signal is transmitted. Spacecraft motion, processing time and station scheduling are excluded.
An ideal immediate reply takes twice the one-way light time.
Explore mission dates
Snapshots use 12:00 UTC on the selected day, not exact encounter time. Check the map timestamp and data availability. The current summary above stays independent.
Drag to rotate · Scroll/pinch to zoom · Tap a planet to focus
Solar System ViewPlanet sizes are enlarged for visibility; orbital positions use JPL ephemerides.
Loading mission ephemeris…UTC --:--:--
James Webb Space Telescope · FROM YOUR LOCATION
Find the spacecraft in the sky
See where the spacecraft appears in the sky for the location selected above. The chart shows direction and does not guarantee naked-eye or telescope visibility.
Waiting for your selected location…
Right ascension · ICRF—
Declination · ICRF—
Sky direction—
Above horizon—
Rise, highest point and set
Rise above horizon—
Highest altitude—
Set below horizon—
Rise, highest point and set are estimates. Atmospheric refraction and terrain are excluded.
A calculated direction does not imply optical visibility.
Distance from your location
Observer range in astronomical units. Close flybys and maneuvers can change the distance quickly.
About James Webb Space Telescope
A large infrared observatory operating in a halo orbit around the Sun–Earth L2 region.
DestinationSun–Earth L2 region
Launched2021-12-25
AgencyNASA/ESA/CSA
DAILY SKY POSITION
12:00 UTC sample · dates and times labeled UTCThe next 15 days
| Date (UTC) | RA (°) | Dec (°) | Azimuth (°) | Altitude (°) | Range (AU) |
|---|---|---|---|---|---|
| Select your observing location above to load the position table. | |||||
These are observer-based line-of-sight calculations, independent of the compressed scale used in the 3D voyage map. No brightness prediction is made.
TRACKER GUIDE & MISSION EXPLAINER
James Webb Space Telescope Tracker: L2 Orbit, Distance and Mission
The James Webb Space Telescope is not orbiting Earth like Hubble. It travels around the Sun near the Sun-Earth second Lagrange point, L2, about 1.5 million kilometres from Earth on the anti-Sun side. The tracker above uses JPL Horizons ephemerides to visualise its changing position and distance.
Webb launched on December 25, 2021 aboard an Ariane 5. Its large segmented mirror and infrared instruments study the early universe, galaxy evolution, stars, planets and atmospheres. The cold observing environment near L2 is central to that infrared mission.
What L2 means
L2 is a region where the combined gravity of the Sun and Earth and the motion of a spacecraft allow it to remain approximately aligned with Earth as both orbit the Sun. Webb does not sit motionless on the exact point. It follows a large halo orbit around L2, with a circuit taking roughly half a year.
Keeping the Sun, Earth and Moon on the same side allows the five-layer sunshield to block their heat and light. The telescope can remain cold while its solar panel and communications antenna face the inner Solar System.
How the Webb tracker works
JPL Horizons provides computed vectors for Webb at requested times. SpaceTracker.live caches a short timeline and interpolates distance and vector values between ephemeris points. This is not direct engineering telemetry and does not show the telescope's current observing target.
The scene is deliberately compressed. Webb's halo orbit, Earth-Moon scale and Sun-Earth distance cannot all be shown clearly at one literal scale. The numeric Earth and Sun distances are the correct way to interpret the display.
What to explore
- Compare Webb's Earth distance with Hubble's altitude.
- Notice that Webb and Earth travel around the Sun together rather than Webb circling Earth every few hours.
- Observe the slow variation caused by the halo orbit.
- Use light time to understand communications delay to L2.
- Visit official science pages for observations and mission status.
Educational significance
Webb makes Lagrange points tangible. Students can explore how orbit design supports temperature control, power, communications and uninterrupted observing. Comparing Webb with Hubble shows that two space telescopes can use radically different locations to meet different scientific and engineering needs.
The telescope's mirror collects infrared light, but the tracker follows the observatory platform. A position vector cannot reveal which galaxy or planet Webb is observing; pointing schedules and orbital motion are separate information.
Limitations
SpaceTracker.live is not affiliated with the Webb mission and does not provide spacecraft health, schedule or raw telemetry. Ephemeris values are calculated and the visual scene is not to scale.
Why Webb cannot be serviced like Hubble
Hubble's low Earth orbit allowed Space Shuttle servicing missions. Webb is roughly four times farther from Earth than the Moon and was designed around remote commissioning, redundancy and finite propellant rather than astronaut servicing. That contrast is one reason location matters so much in spacecraft design. The L2 orbit offers thermal and observing advantages, but it also changes launch, communications and maintenance strategy. The tracker makes this engineering trade-off easier to understand by placing Webb's distance beside familiar Earth-orbit missions.
MISSION REFERENCE · RESEARCH & TRAJECTORY
Webb science, L2 operations and how to read the trajectory
Why the observatory operates around L2
The James Webb Space Telescope works near the Sun–Earth L2 region, roughly 1.5 million kilometres from Earth in the direction opposite the Sun. L2 is not a physical object and Webb does not sit motionless at a mathematical point. Its orbit around the region helps keep the Sun, Earth and Moon on broadly the same side of the observatory. That geometry lets its sunshield protect the telescope’s cold infrared instruments while solar panels can face the Sun. Webb must still make course adjustments to maintain its working orbit.
What Webb is built to observe
Infrared light allows Webb to study very distant galaxies, stars forming inside dusty clouds, and the atmospheres of some planets beyond our Solar System. Its large segmented mirror gathers faint light, while specialised instruments separate imaging and spectroscopy tasks. A spectrum can reveal how light varies with wavelength, which helps scientists investigate the physical and chemical properties of an object. These science observations are distinct from the spacecraft-position calculations on this tracker: the map follows the observatory, not the objects it studies.
The meaning of a halo-shaped path
A diagram of Webb circling L2 is a visualization of its orbit around a region that moves with Earth around the Sun. The ring shown in a compressed display is illustrative and should not be measured as a literal kilometre-scale orbit. NASA/JPL Horizons position vectors provide the numeric position and range. To study the geometry, compare Earth distance and Sun distance and notice that they change even while Webb remains near the L2 operating region. A rising or setting direction from Earth does not imply that the observatory is bright enough to spot by eye.
Why its distance is useful
The one-way light-time figure approximates how long an electromagnetic signal takes to cross the current separation between Earth and the spacecraft. Communication and mission operations take that delay into account. The figure changes with geometry and should not be mistaken for the time until an image is publicly released. The date on a science picture usually reflects its observation or publication process, whereas this tracker’s timestamp belongs to an ephemeris position sample. NASA’s Webb orbit and mission pages explain the underlying mission design.
Frequently asked questions
Is Webb exactly at L2?
No. It follows a large halo orbit around the Sun-Earth L2 region.
Does Webb orbit Earth?
It orbits the Sun while remaining near L2 and roughly aligned with Earth.
Why is Webb so far away?
The L2 environment helps keep the infrared observatory cold and provides a stable observing geometry.
Can this tracker show what Webb is photographing?
No. It displays ephemeris-derived position and distance, not the observation schedule or telescope pointing.
Sources and further reading
Educational-use note: SpaceTracker.live is an independent educational website and is not an official mission-control service. Positions, paths, distances and pass predictions are computed from third-party orbital elements or ephemerides. They may be delayed or approximate and must not be used for navigation, collision avoidance or safety-critical decisions.