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 Parker Solar Probe Now? Live Position
NASA · Inner heliosphere / Sun · Launched 2018-08-12
Explore the solar environment
Parker’s highly elliptical orbit repeatedly carries it close to the Sun. The sunlight estimate uses inverse-square scaling from Sun distance. It is not spacecraft temperature, shielding performance or measured radiation.
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: 2018-08-12 · calendar-day estimate
Sunlight relative to 1 AU: —
Ideal inverse-square estimate; ignores solar variability and spacecraft orientation.
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 --:--:--
Parker Solar Probe · 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 Parker Solar Probe
A solar mission repeatedly flying through the Sun’s outer corona to study the solar wind and energetic particles.
DestinationInner heliosphere / Sun
Launched2018-08-12
AgencyNASA
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
Parker Solar Probe Tracker: Orbit, Venus Flybys and Solar Science
Parker Solar Probe travels closer to the Sun than any previous spacecraft. The tracker above follows its highly elliptical heliocentric orbit with JPL Horizons ephemerides, showing that its distance and speed change dramatically between distant and close parts of each solar pass.
NASA launched the spacecraft on August 12, 2018. Repeated Venus gravity assists reduced its orbital energy and brought perihelion progressively closer to the Sun. Parker became the first spacecraft to fly through the solar corona.
Why flying toward the Sun is difficult
Earth already travels around the Sun at high orbital speed. A probe must shed much of that sideways motion to fall inward rather than simply continue in a similar solar orbit. Parker used a powerful launch and multiple Venus encounters to reshape its trajectory.
Near the Sun, the spacecraft protects its instruments behind a carbon-composite heat shield while measuring particles, plasma, magnetic and electric fields and imaging structures in the corona and solar wind.
What the tracker is showing
Horizons position and velocity vectors are sampled and interpolated for the display. Sun distance can shrink rapidly near perihelion, and heliocentric speed rises as gravity converts potential energy into kinetic energy. Later in the orbit the spacecraft climbs away and slows.
The scene is compressed and does not depict the Sun or orbit at physical scale. It also cannot visualise the hazardous thermal and radiation environment from distance alone.
How to explore the data
- Watch Sun distance and speed together through different orbital phases.
- Compare the elliptical orbit with Webb's L2 motion.
- Use the vector components to see motion in three dimensions.
- Relate close approaches to official NASA encounter updates.
- Do not interpret the display as real-time spacecraft telemetry.
Educational importance
Parker is an excellent demonstration of Kepler's laws: a spacecraft in an ellipse moves fastest near the Sun and slowest farther away. The mission also links solar physics to space weather by studying where the solar wind is accelerated and why the corona is much hotter than the visible surface below.
The tracker describes trajectory. Official NASA science pages explain instruments, discoveries and communication status.
Limitations
During close solar passes, the spacecraft may not communicate continuously with Earth. A valid position calculation does not indicate a live radio link. Use the numbers as ephemeris estimates and the scene as a qualitative educational aid.
Reading an orbit with conservation of energy
Parker's changing numbers provide a simple demonstration of orbital energy. Near perihelion the probe is deep in the Sun's gravitational field and moving extremely fast; near aphelion it is farther away and slower. Plotting speed against Sun distance across several days can turn the tracker into a small data exercise. The relationship is not caused by an engine accelerating continuously—it follows mainly from motion through the Sun's gravity after the trajectory was established.
MISSION REFERENCE · RESEARCH & TRAJECTORY
Parker Solar Probe science, perihelion passes and changing solar distance
Why going closer to the Sun takes gravity assists
Parker Solar Probe repeatedly used Venus flybys to reshape its orbit and lower its closest approach to the Sun. Falling toward the Sun is not simply a matter of pointing a rocket inward: a spacecraft leaving Earth begins with substantial sideways speed around the Sun. The flybys change its heliocentric orbital energy and angular momentum without requiring a giant propellant supply. The result is a series of elongated solar orbits, with especially high speed near perihelion and a much more distant position during other parts of each orbit.
What instruments investigate in the corona
NASA describes investigations of magnetic and electric fields, particles of differing energies and images of the surrounding corona and solar wind. The goal is to understand how the corona is heated and how solar-wind and energetic-particle flows develop. The mission has directly sampled the solar corona. That achievement concerns the spacecraft’s local environment during a close approach; a public map marker by itself cannot tell you what plasma or magnetic field it measured at a given second.
What the Sun-distance graph can show
A repeated fall and rise in distance from the Sun is expected as Parker traverses successive orbits. It does not show an engineering fault or a bounced trajectory. Compare the Sun-centred range with the position in the orbit view to identify approach and departure phases. Earth range is a different quantity because Earth also moves around the Sun. A speed figure must include its reference frame: the heliocentric speed near the Sun can be much higher than a casual comparison of positions on a compressed map suggests.
Heat shield and observing limits
Parker’s thermal protection system makes these close solar encounters possible while spacecraft operations balance power, communication and instrument use. On this site, trajectory data come from published ephemerides, not from a direct telemetry channel. Rise and set times from an observer location are geometric directions only: the probe lies close to the Sun in the sky during many phases, and users must never try to locate it by pointing unfiltered optical equipment at the Sun. For observations and mission status, consult NASA’s Parker mission reports.
Frequently asked questions
Does Parker Solar Probe touch the Sun's visible surface?
No. It flies through the corona, the Sun's outer atmosphere, while remaining millions of kilometres above the visible surface.
Why does its speed change so much?
Its highly elliptical orbit converts gravitational potential energy into speed as it falls toward the Sun and reverses that exchange while moving outward.
How does the spacecraft survive the heat?
A heat shield and carefully controlled orientation keep sensitive systems protected while selected instruments sample the environment.
Are the values direct telemetry?
No. They are based on JPL Horizons ephemerides and interpolation.
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.