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Asteroid Near-Earth

2025 SQ4

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(2025 SQ4)

Where is it now

Distance from Sun
0.761 AU
True anomaly
123.43°
Distance from Earth
1.039 AU
As of
15 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 — 0.997 AU from the Sun Earth 2025 SQ4 — 0.761 AU from the Sun 2025 SQ4
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 SQ4 is 1.039 AU from Earth today (8.6 light-minutes).

In the sky

Right ascension
16h 25m 10s
Declination
-18° 03′ 12″
Constellation
Ophiuchus
Distance from Earth
1.04 AU
Elongation from the Sun
44.3° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
0.713 AU
Eccentricity
0.4335
Inclination
6.88°
Orbital period
220 days
Perihelion
0.404 AU
Aphelion
1.022 AU
Longitude of ascending node
176.81°
Argument of periapsis
11.02°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 0.7 LD
0.0018 AU
Tisserand (Jupiter)
7.959

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
22
Data arc
27 days
First observed
20 September 2025
Last observed
17 October 2025
Residual RMS
0.43 ″
Solution · Otto Matic
5 November 2025

Visual & observation

Absolute magnitude (H)
26.35

Discovery & classification

Listed by JPL impact monitoring; see the Sentry table for current probabilities.

Aten Near-Earth Object

Close approaches 96 on record

Flyby geometry
Ecliptic flyby of 2025 SQ4 at 2028-09-14 01:51 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-09-14 01:51 UTC close approach of 2025 SQ4. Catalogue miss distance 13.5 LD · 5.17 × 10⁶ km. The curve is the geocentric path from 2028-09-11 to 2028-09-17, 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 north of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 17 Sep 13.5 LD · 5.17 × 10⁶ km 2028-09-14 01:51 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-09-14 01:51 UTC close approach of 2025 SQ4. Catalogue miss distance 13.5 LD · 5.17 × 10⁶ km. The curve is the geocentric path from 2028-09-11 to 2028-09-17, 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 north 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
2028-09-14 01:51:00 Earth 0.0346 AU 13.5 LD 9.7 km/s
2031-08-05 09:03:00 Venus 0.1181 AU 46.0 LD 18.4 km/s
2031-09-12 04:40:00 Earth 0.0992 AU 38.6 LD 11.9 km/s
2032-03-14 20:37:00 Venus 0.1033 AU 40.2 LD 14.2 km/s
2032-09-08 17:35:00 Merc 0.0932 AU 36.3 LD 25.1 km/s
2032-09-08 17:35:00 Mercury 0.0932 AU 36.3 LD 25.1 km/s
2032-10-27 01:18:00 Venus 0.1479 AU 57.6 LD 10.8 km/s
2033-11-23 05:28:00 Merc 0.0764 AU 29.7 LD 23.3 km/s
2033-11-23 05:28:00 Mercury 0.0764 AU 29.7 LD 23.3 km/s
2034-09-12 07:56:00 Earth 0.1772 AU 68.9 LD 14.5 km/s

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

Sources