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Asteroid Near-Earth

11405

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11405 (1999 CV3)

Where is it now

Distance from Sun
2.019 AU
True anomaly
188.82°
Distance from Earth
1.623 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 11405 — 2.019 AU from the Sun 11405
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 11405 is 1.623 AU from Earth today (13.5 light-minutes).

In the sky

Right ascension
06h 34m 09s
Declination
-04° 44′ 18″
Constellation
Monoceros
Distance from Earth
1.62 AU
Elongation from the Sun
98.31° — well clear of the Sun

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
1.459 AU
Eccentricity
0.3938
Inclination
22.87°
Orbital period
644 days
Perihelion
0.885 AU
Aphelion
2.034 AU
Longitude of ascending node
141.22°
Argument of periapsis
96.43°
Epoch · J2000
2461200.5
Orbit class · APO
Apollo
Earth MOID · 45.8 LD
0.1178 AU
Tisserand (Jupiter)
4.462

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
7,285
Data arc
47.93 years
First observed
25 October 1978
Last observed
28 September 2026
Residual RMS
0.35 ″
Solution · Otto Matic
29 September 2026

Physical properties

Mean radius
1.81 km
Rotation period
6.5 hours

Visual & observation

Geometric albedo
0.112
Absolute magnitude (H)
15.22
Spectral type (SMASS)
Sq

Discovery & classification

Discovered by
LINEAR
Discovery date
10 February 1999
Discovery site
Socorro

Also known as 1999 CV3

Apollo Near-Earth Object

Close approaches 9 on record

Flyby geometry
Ecliptic flyby of 11405 at 2043-08-05 19:16 UTC Top-down view of the ecliptic, Earth at the centre, for the 2043-08-05 19:16 UTC close approach of 11405. Catalogue miss distance 53.1 LD · 2.04 × 10⁷ km. The curve is the geocentric path from 2043-08-02 to 2043-08-08, 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 Moon’s position is approximate. The inset is a heliocentric view and is approximate. Sun 53.1 LD · 2.04 × 10⁷ km 2043-08-05 19:16 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2043-08-05 19:16 UTC close approach of 11405. Catalogue miss distance 53.1 LD · 2.04 × 10⁷ km. The curve is the geocentric path from 2043-08-02 to 2043-08-08, 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 Moon’s position is approximate. The inset is a heliocentric view and is approximate.

JPL Horizons

When (UTC) Body Distance Lunar distances Relative speed
2043-08-05 19:16:00 Earth 0.1366 AU 53.1 LD 16.9 km/s
2073-08-01 02:47:00 Earth 0.1359 AU 52.9 LD 14.3 km/s
2110-08-07 13:54:00 Earth 0.149 AU 58.0 LD 17.4 km/s
2140-08-02 12:27:00 Earth 0.1249 AU 48.6 LD 14.6 km/s
2177-08-08 01:56:00 Earth 0.1573 AU 61.2 LD 17.7 km/s

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

Sources