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Asteroid Near-Earth

2024 CN3

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(2024 CN3)

Where is it now

Distance from Sun
0.447 AU
True anomaly
309.59°
Distance from Earth
1.262 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 2024 CN3 — 0.447 AU from the Sun 2024 CN3
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2024 CN3 is 1.262 AU from Earth today (10.5 light-minutes).

In the sky

Right ascension
14h 35m 36s
Declination
-17° 18′ 54″
Constellation
Libra
Distance from Earth
1.24 AU
Elongation from the Sun
18.82° — 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
0.717 AU
Eccentricity
0.4464
Inclination
7.03°
Orbital period
221.7 days
Perihelion
0.397 AU
Aphelion
1.037 AU
Longitude of ascending node
321.65°
Argument of periapsis
354.12°
Epoch · J2000
2460353.5
Orbit class · ATE
Aten
Earth MOID · 10.4 LD
0.0267 AU
Tisserand (Jupiter)
7.917

Orbit quality

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

Observations used
16
Data arc
24 hours
First observed
12 February 2024
Last observed
13 February 2024
Residual RMS
0.47 ″
Solution · Otto Matic
13 February 2024

Visual & observation

Absolute magnitude (H)
26.21

Discovery & classification

Aten Near-Earth Object

Close approaches 41 on record

Flyby geometry
Ecliptic flyby of 2024 CN3 at 2027-01-16 14:00 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-01-16 14:00 UTC close approach of 2024 CN3. Catalogue miss distance 22.2 LD · 8.52 × 10⁶ km. The curve is the geocentric path from 2027-01-13 to 2027-01-19, 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 14 Jan 19 Jan 22.2 LD · 8.52 × 10⁶ km 2027-01-16 14:00 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-01-16 14:00 UTC close approach of 2024 CN3. Catalogue miss distance 22.2 LD · 8.52 × 10⁶ km. The curve is the geocentric path from 2027-01-13 to 2027-01-19, 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
2027-01-16 14:00:00 Earth 0.057 AU 22.2 LD 10.4 km/s
2029-05-10 09:56:00 Venus 0.13 AU 50.6 LD 21.3 km/s
2029-12-19 15:27:00 Venus 0.0956 AU 37.2 LD 18.7 km/s
2030-01-14 05:15:00 Earth 0.2231 AU 86.8 LD 17 km/s
2030-07-31 06:47:00 Venus 0.0843 AU 32.8 LD 16.2 km/s
2031-03-12 18:57:00 Venus 0.1026 AU 39.9 LD 13.9 km/s
2031-10-25 04:53:00 Venus 0.1375 AU 53.5 LD 12.2 km/s
2032-02-16 23:27:00 Earth 0.4884 AU 190.1 LD 26.8 km/s
2033-01-21 08:19:00 Earth 0.4363 AU 169.8 LD 24.7 km/s
2035-02-24 10:53:00 Earth 0.2784 AU 108.4 LD 19.3 km/s

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

Sources