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Asteroid Near-Earth

2023 KL4

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(2023 KL4)

Where is it now

Distance from Sun
1.033 AU
True anomaly
186.81°
Distance from Earth
1.977 AU
As of
21 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 2023 KL4 — 1.033 AU from the Sun 2023 KL4
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 KL4 is 1.977 AU from Earth today (16.4 light-minutes).

In the sky

Right ascension
14h 31m 53s
Declination
-17° 51′ 08″
Constellation
Libra
Distance from Earth
1.98 AU
Elongation from the Sun
13.24° — too close to the Sun to observe

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
0.907 AU
Eccentricity
0.14
Inclination
28.13°
Orbital period
315.7 days
Perihelion
0.78 AU
Aphelion
1.034 AU
Longitude of ascending node
243.83°
Argument of periapsis
161.89°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 5.2 LD
0.0133 AU
Tisserand (Jupiter)
6.464

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
26
Data arc
20 days
First observed
26 May 2023
Last observed
15 June 2023
Residual RMS
0.41 ″
Solution · Otto Matic
7 July 2023

Visual & observation

Absolute magnitude (H)
22.91

Discovery & classification

Aten Near-Earth Object

Close approaches 132 on record

Flyby geometry
Ecliptic flyby of 2023 KL4 at 2029-01-08 13:24 UTC Top-down view of the ecliptic, Earth at the centre, for the 2029-01-08 13:24 UTC close approach of 2023 KL4. Catalogue miss distance 162.2 LD · 6.24 × 10⁷ km. The curve is the geocentric path from 2029-01-05 to 2029-01-11, 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 162.2 LD · 6.24 × 10⁷ km 2029-01-08 13:24 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2029-01-08 13:24 UTC close approach of 2023 KL4. Catalogue miss distance 162.2 LD · 6.24 × 10⁷ km. The curve is the geocentric path from 2029-01-05 to 2029-01-11, 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
2028-02-08 02:13:00 Venus 0.1058 AU 41.2 LD 19.9 km/s
2029-01-08 13:24:00 Earth 0.4169 AU 162.2 LD 19.3 km/s
2029-05-26 18:15:00 Earth 0.2023 AU 78.7 LD 14.6 km/s
2029-10-19 05:40:00 Earth 0.3821 AU 148.7 LD 17.3 km/s
2035-05-28 03:10:00 Earth 0.4936 AU 192.1 LD 19.3 km/s
2035-11-22 00:07:00 Earth 0.2113 AU 82.2 LD 16.9 km/s
2036-05-21 02:56:00 Earth 0.2724 AU 106.0 LD 17.2 km/s
2041-12-21 09:12:00 Earth 0.2875 AU 111.9 LD 17.9 km/s
2042-05-25 21:19:00 Earth 0.0303 AU 11.8 LD 14 km/s
2048-05-27 02:15:00 Earth 0.3541 AU 137.8 LD 16.6 km/s

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

Sources