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Asteroid Near-Earth

427778

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427778 (2005 BE)

Where is it now

Distance from Sun
1.12 AU
True anomaly
213.56°
Distance from Earth
1.708 AU
As of
20 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 — 0.996 AU from the Sun Earth 427778 — 1.12 AU from the Sun 427778
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 427778 is 1.708 AU from Earth today (14.2 light-minutes).

In the sky

Right ascension
11h 33m 48s
Declination
+10° 59′ 00″
Constellation
Leo
Distance from Earth
1.7 AU
Elongation from the Sun
38.76° — 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
0.884 AU
Eccentricity
0.4211
Inclination
31.19°
Orbital period
303.5 days
Perihelion
0.512 AU
Aphelion
1.256 AU
Longitude of ascending node
115.96°
Argument of periapsis
168.71°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 90.4 LD
0.2323 AU
Tisserand (Jupiter)
6.527

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
313
Data arc
20.1 years
First observed
16 January 2005
Last observed
22 February 2025
Residual RMS
0.5 ″
Solution · Otto Matic
15 October 2025

Visual & observation

Absolute magnitude (H)
20.1

Discovery & classification

Discovered by
CSS
Discovery date
16 January 2005
Discovery site
Catalina

Also known as 2005 BE

Aten Near-Earth Object

Close approaches 32 on record

When (UTC) Body Distance Lunar distances Relative speed
2030-05-23 20:10:00 Merc 0.0928 AU 36.1 LD 27.3 km/s
2030-05-23 20:10:00 Mercury 0.0928 AU 36.1 LD 27.3 km/s
2047-01-05 01:00:00 Merc 0.0997 AU 38.8 LD 28.1 km/s
2047-01-05 01:00:00 Mercury 0.0997 AU 38.8 LD 28.1 km/s
2089-05-24 16:00:00 Mercury 0.0969 AU 37.7 LD 24.6 km/s
2089-05-24 16:00:00 Merc 0.0969 AU 37.7 LD 24.6 km/s
2106-01-06 21:29:00 Mercury 0.0907 AU 35.3 LD 25.1 km/s
2106-01-06 21:29:00 Merc 0.0907 AU 35.3 LD 25.1 km/s
2122-08-20 22:21:00 Merc 0.0886 AU 34.5 LD 25.3 km/s
2122-08-20 22:21:00 Mercury 0.0886 AU 34.5 LD 25.3 km/s

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

Sources