Skip to content
Public Universe
Asteroid Near-Earth

2025 XS3

Add to an observing list or journal →

(2025 XS3)

Where is it now

Distance from Sun
1.042 AU
True anomaly
224.69°
Distance from Earth
0.608 AU
As of
22 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.995 AU from the Sun Earth 2025 XS3 — 1.042 AU from the Sun 2025 XS3
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 XS3 is 0.608 AU from Earth today (5.1 light-minutes).

In the sky

Right ascension
08h 51m 34s
Declination
+09° 23′ 13″
Constellation
Cancer
Distance from Earth
0.61 AU
Elongation from the Sun
76.91° — well clear of the Sun

Visible from both hemispheres.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
0.939 AU
Eccentricity
0.1791
Inclination
14.7°
Orbital period
332.6 days
Perihelion
0.771 AU
Aphelion
1.108 AU
Longitude of ascending node
81.7°
Argument of periapsis
116.73°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 1.4 LD
0.0035 AU
Tisserand (Jupiter)
6.348

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
34
First observed
13 December 2025
Last observed
13 December 2025
Residual RMS
0.26 ″
Solution · Otto Matic
18 December 2025

Visual & observation

Absolute magnitude (H)
30.09

Discovery & classification

Aten Near-Earth Object

Close approaches 29 on record

Flyby geometry
Ecliptic flyby of 2025 XS3 at 2035-12-13 09:59 UTC Top-down view of the ecliptic, Earth at the centre, for the 2035-12-13 09:59 UTC close approach of 2025 XS3. Catalogue miss distance 36.0 LD · 1.38 × 10⁷ km. The curve is the geocentric path from 2035-12-10 to 2035-12-16, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 36.0 LD · 1.38 × 10⁷ km 2035-12-13 09:59 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2035-12-13 09:59 UTC close approach of 2025 XS3. Catalogue miss distance 36.0 LD · 1.38 × 10⁷ km. The curve is the geocentric path from 2035-12-10 to 2035-12-16, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2027-03-02 14:46:00 Venus 0.1397 AU 54.4 LD 9.7 km/s
2029-01-11 16:21:00 Venus 0.1167 AU 45.4 LD 7 km/s
2035-12-13 09:59:00 Earth 0.0925 AU 36.0 LD 8 km/s
2045-06-11 11:00:00 Earth 0.1833 AU 71.4 LD 9.4 km/s
2045-12-01 22:11:00 Earth 0.1936 AU 75.3 LD 7.8 km/s
2051-10-14 23:28:00 Venus 0.1014 AU 39.5 LD 7.2 km/s
2055-07-01 19:51:00 Earth 0.1511 AU 58.8 LD 9.5 km/s
2065-07-15 19:38:00 Earth 0.1706 AU 66.4 LD 10.4 km/s
2066-12-12 20:02:00 Earth 0.1068 AU 41.6 LD 11.2 km/s
2074-07-17 19:26:00 Venus 0.0967 AU 37.6 LD 7.7 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources