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Asteroid Near-Earth Potentially hazardous

413577

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413577 (2005 UL5)

Where is it now

Distance from Sun
0.79 AU
True anomaly
249.52°
Distance from Earth
0.729 AU
As of
22 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 413577 — 0.79 AU from the Sun 413577
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 413577 is 0.729 AU from Earth today (6.1 light-minutes).

In the sky

Right ascension
10h 44m 53s
Declination
+12° 53′ 46″
Constellation
Leo
Distance from Earth
0.73 AU
Elongation from the Sun
51.73° — near the Sun — look low at dusk or dawn

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
0.936 AU
Eccentricity
0.5697
Inclination
14.32°
Orbital period
330.9 days
Perihelion
0.403 AU
Aphelion
1.47 AU
Longitude of ascending node
58.86°
Argument of periapsis
127.8°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 2.2 LD
0.0057 AU
Tisserand (Jupiter)
6.234

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
420
Data arc
19.93 years
First observed
27 October 2005
Last observed
1 October 2025
Residual RMS
0.39 ″
Solution · Otto Matic
16 June 2026

Physical properties

Rotation period
3.46 hours

Visual & observation

Absolute magnitude (H)
20.34

Discovery & classification

Discovered by
LINEAR
Discovery date
27 October 2005
Discovery site
Socorro

Also known as 2005 UL5

Aten Near-Earth Object Potentially Hazardous Asteroid

Close approaches 139 on record

Flyby geometry
Ecliptic flyby of 413577 at 2034-11-22 04:54 UTC Top-down view of the ecliptic, Earth at the centre, for the 2034-11-22 04:54 UTC close approach of 413577. Catalogue miss distance 49.5 LD · 1.9 × 10⁷ km. The curve is the geocentric path from 2034-11-19 to 2034-11-25, 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 49.5 LD · 1.9 × 10⁷ km 2034-11-22 04:54 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2034-11-22 04:54 UTC close approach of 413577. Catalogue miss distance 49.5 LD · 1.9 × 10⁷ km. The curve is the geocentric path from 2034-11-19 to 2034-11-25, 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
2026-11-29 16:29:00 Merc 0.0559 AU 21.8 LD 18.9 km/s
2026-11-29 16:29:00 Mercury 0.0559 AU 21.8 LD 18.9 km/s
2029-09-19 06:27:00 Venus 0.1342 AU 52.2 LD 24.7 km/s
2030-07-25 01:17:00 Mercury 0.0249 AU 9.7 LD 16.4 km/s
2030-07-25 01:17:00 Merc 0.0249 AU 9.7 LD 16.4 km/s
2034-03-13 23:01:00 Mercury 0.0538 AU 20.9 LD 23.9 km/s
2034-03-13 23:01:00 Merc 0.0538 AU 20.9 LD 23.9 km/s
2034-11-22 04:54:00 Earth 0.1273 AU 49.5 LD 15.3 km/s
2038-08-05 11:59:00 Venus 0.0879 AU 34.2 LD 19 km/s
2044-11-17 21:51:00 Earth 0.0691 AU 26.9 LD 20.6 km/s

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

Sources