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Asteroid Near-Earth

154453

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154453 (2003 CJ11)

Where is it now

Distance from Sun
3.97 AU
True anomaly
195.91°
Distance from Earth
4.616 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 154453 — 3.97 AU from the Sun 154453
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 154453 is 4.616 AU from Earth today (38.4 light-minutes).

In the sky

Right ascension
16h 01m 22s
Declination
-24° 28′ 00″
Constellation
Scorpius
Distance from Earth
4.62 AU
Elongation from the Sun
44.25° — 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
2.583 AU
Eccentricity
0.8351
Inclination
20.81°
Orbital period
4.15 years
Perihelion
0.426 AU
Aphelion
4.741 AU
Longitude of ascending node
61.7°
Argument of periapsis
356.42°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 134.0 LD
0.3443 AU
Tisserand (Jupiter)
2.739

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
999
Data arc
22.39 years
First observed
3 February 2003
Last observed
26 June 2025
Residual RMS
0.42 ″
Solution · Otto Matic
20 October 2025

Physical properties

Rotation period
5.23 hours

Visual & observation

Absolute magnitude (H)
15.36

Discovery & classification

Discovered by
LONEOS
Discovery date
3 February 2003
Discovery site
Anderson Mesa

Also known as 2003 CJ11

Apollo Near-Earth Object

Close approaches 14 on record

When (UTC) Body Distance Lunar distances Relative speed
2030-07-26 23:50:00 Juptr 1.2359 AU 481.0 LD 9.6 km/s
2042-06-27 22:52:00 Juptr 0.6933 AU 269.8 LD 7.9 km/s
2054-04-27 16:36:00 Juptr 0.7498 AU 291.8 LD 8.2 km/s
2066-04-13 09:09:00 Juptr 1.3938 AU 542.4 LD 10.5 km/s
2113-07-13 22:34:00 Juptr 1.6908 AU 658.0 LD 11 km/s
2125-07-25 20:30:00 Juptr 0.8741 AU 340.2 LD 8.3 km/s
2137-05-28 15:39:00 Juptr 0.6575 AU 255.9 LD 7.9 km/s
2149-04-11 15:55:00 Juptr 1.0089 AU 392.6 LD 9.2 km/s
2161-05-10 03:22:00 Juptr 1.931 AU 751.5 LD 12.6 km/s

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

Sources