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Asteroid Near-Earth

2005 YO3

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(2005 YO3)

Where is it now

Distance from Sun
0.764 AU
True anomaly
247.22°
Distance from Earth
1.719 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 2005 YO3 — 0.764 AU from the Sun 2005 YO3
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2005 YO3 is 1.719 AU from Earth today (14.3 light-minutes).

In the sky

Right ascension
12h 43m 47s
Declination
-10° 49′ 57″
Constellation
Virgo
Distance from Earth
1.72 AU
Elongation from the Sun
10.85° — too close to the Sun to observe

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
0.759 AU
Eccentricity
0.3733
Inclination
12.8°
Orbital period
241.7 days
Perihelion
0.476 AU
Aphelion
1.043 AU
Longitude of ascending node
274.21°
Argument of periapsis
20.16°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 6.3 LD
0.0161 AU
Tisserand (Jupiter)
7.543

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
21
Data arc
13 days
First observed
23 December 2005
Last observed
5 January 2006
Residual RMS
0.57 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
25.1

Discovery & classification

Aten Near-Earth Object

Close approaches 47 on record

Flyby geometry
Ecliptic flyby of 2005 YO3 at 2040-12-29 13:48 UTC Top-down view of the ecliptic, Earth at the centre, for the 2040-12-29 13:48 UTC close approach of 2005 YO3. Catalogue miss distance 186.5 LD · 7.17 × 10⁷ km. The curve is the geocentric path from 2040-12-26 to 2041-01-01, 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 186.5 LD · 7.17 × 10⁷ km 2040-12-29 13:48 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2040-12-29 13:48 UTC close approach of 2005 YO3. Catalogue miss distance 186.5 LD · 7.17 × 10⁷ km. The curve is the geocentric path from 2040-12-26 to 2041-01-01, 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
2040-12-29 13:48:00 Earth 0.4793 AU 186.5 LD 25.3 km/s
2042-12-27 01:55:00 Earth 0.3991 AU 155.3 LD 22.5 km/s
2044-12-23 19:17:00 Earth 0.3187 AU 124.0 LD 19.9 km/s
2046-12-21 23:38:00 Earth 0.2394 AU 93.2 LD 17.2 km/s
2048-12-19 22:00:00 Earth 0.1628 AU 63.4 LD 14.8 km/s
2050-12-20 02:17:00 Earth 0.0909 AU 35.4 LD 12.5 km/s
2058-11-02 19:38:00 Venus 0.1482 AU 57.7 LD 14.4 km/s
2059-01-12 12:36:00 Earth 0.1054 AU 41.0 LD 9.2 km/s
2061-01-22 18:23:00 Earth 0.1329 AU 51.7 LD 9.6 km/s
2063-02-01 01:03:00 Earth 0.1621 AU 63.1 LD 10.6 km/s

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

Sources