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Asteroid Near-Earth

2009 WB105

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(2009 WB105)

Where is it now

Distance from Sun
0.667 AU
True anomaly
50.91°
Distance from Earth
1.376 AU
As of
19 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 2009 WB105 — 0.667 AU from the Sun 2009 WB105
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2009 WB105 is 1.376 AU from Earth today (11.4 light-minutes).

In the sky

Right ascension
15h 27m 16s
Declination
-07° 39′ 54″
Constellation
Libra
Distance from Earth
1.38 AU
Elongation from the Sun
27.08° — 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
0.826 AU
Eccentricity
0.2525
Inclination
38.4°
Orbital period
274 days
Perihelion
0.617 AU
Aphelion
1.034 AU
Longitude of ascending node
242.58°
Argument of periapsis
347.44°
Epoch · J2000
2461200.5
Orbit class · ATE
Aten
Earth MOID · 14.7 LD
0.0378 AU
Tisserand (Jupiter)
6.907

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
196
Data arc
15 years
First observed
25 November 2009
Last observed
26 November 2024
Residual RMS
0.4 ″
Solution · Otto Matic
27 November 2024

Visual & observation

Absolute magnitude (H)
23.5

Discovery & classification

Aten Near-Earth Object

Close approaches 74 on record

Flyby geometry
Ecliptic flyby of 2009 WB105 at 2027-11-25 18:59 UTC Top-down view of the ecliptic, Earth at the centre, for the 2027-11-25 18:59 UTC close approach of 2009 WB105. Catalogue miss distance 15.1 LD · 5.8 × 10⁶ km. The curve is the geocentric path from 2027-11-22 to 2027-11-28, 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 23 Nov 15.1 LD · 5.8 × 10⁶ km 2027-11-25 18:59 UTC Earth Moon Heliocentric, approximate

Top-down view of the ecliptic, Earth at the centre, for the 2027-11-25 18:59 UTC close approach of 2009 WB105. Catalogue miss distance 15.1 LD · 5.8 × 10⁶ km. The curve is the geocentric path from 2027-11-22 to 2027-11-28, 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
2027-11-25 18:59:00 Earth 0.0388 AU 15.1 LD 18.9 km/s
2030-11-25 13:24:00 Earth 0.0391 AU 15.2 LD 18.9 km/s
2033-11-25 07:54:00 Earth 0.0398 AU 15.5 LD 18.9 km/s
2036-11-25 02:31:00 Earth 0.0417 AU 16.2 LD 18.9 km/s
2039-11-25 21:22:00 Earth 0.0455 AU 17.7 LD 18.8 km/s
2042-11-25 16:37:00 Earth 0.0532 AU 20.7 LD 18.8 km/s
2045-11-25 12:01:00 Earth 0.0651 AU 25.3 LD 18.8 km/s
2046-04-05 19:22:00 Venus 0.141 AU 54.9 LD 28.9 km/s
2048-11-25 07:21:00 Earth 0.0827 AU 32.2 LD 18.8 km/s
2051-11-26 02:25:00 Earth 0.1044 AU 40.6 LD 18.9 km/s

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

Sources