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Asteroid Near-Earth

2023 XM15

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(2023 XM15)

Where is it now

Distance from Sun
0.809 AU
True anomaly
240.13°
Distance from Earth
1.617 AU
As of
16 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 2023 XM15 — 0.809 AU from the Sun 2023 XM15
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 XM15 is 1.617 AU from Earth today (13.5 light-minutes).

In the sky

Right ascension
11h 56m 40s
Declination
-02° 17′ 23″
Constellation
Virgo
Distance from Earth
1.62 AU
Elongation from the Sun
23.55° — near the Sun — look low at dusk or dawn

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
0.757 AU
Eccentricity
0.3054
Inclination
5.78°
Orbital period
240.4 days
Perihelion
0.525 AU
Aphelion
0.988 AU
Longitude of ascending node
273.28°
Argument of periapsis
357.12°
Epoch · J2000
2460295.5
Orbit class · ATE
Aten
Earth MOID · 1.4 LD
0.0035 AU
Tisserand (Jupiter)
7.6

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
21
Data arc
16 days
First observed
15 December 2023
Last observed
31 December 2023
Residual RMS
0.53 ″
Solution · Otto Matic
31 December 2023

Visual & observation

Absolute magnitude (H)
24.21

Discovery & classification

Aten Near-Earth Object

Close approaches 31 on record

Flyby geometry
Ecliptic flyby of 2023 XM15 at 2028-01-12 22:25 UTC Top-down view of the ecliptic, Earth at the centre, for the 2028-01-12 22:25 UTC close approach of 2023 XM15. Catalogue miss distance 69.4 LD · 2.67 × 10⁷ km. The curve is the geocentric path from 2028-01-09 to 2028-01-15, 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. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate. Sun 69.4 LD · 2.67 × 10⁷ km 2028-01-12 22:25 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2028-01-12 22:25 UTC close approach of 2023 XM15. Catalogue miss distance 69.4 LD · 2.67 × 10⁷ km. The curve is the geocentric path from 2028-01-09 to 2028-01-15, 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. 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
2028-01-12 22:25:00 Earth 0.1784 AU 69.4 LD 11.7 km/s
2028-11-28 01:27:00 Mercury 0.0663 AU 25.8 LD 11.7 km/s
2028-11-28 01:27:00 Merc 0.0663 AU 25.8 LD 11.7 km/s
2029-08-28 19:52:00 Earth 0.4088 AU 159.1 LD 11.3 km/s
2030-01-08 13:04:00 Earth 0.3363 AU 130.9 LD 17.2 km/s
2030-02-14 05:54:00 Venus 0.1263 AU 49.2 LD 13.8 km/s
2032-01-03 02:56:00 Earth 0.497 AU 193.4 LD 22.7 km/s
2032-04-28 22:29:00 Venus 0.1355 AU 52.7 LD 14.9 km/s
2036-02-21 15:04:00 Merc 0.096 AU 37.4 LD 12.8 km/s
2036-02-21 15:04:00 Mercury 0.096 AU 37.4 LD 12.8 km/s

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

Sources