418849
Add to an observing list or journal →418849 (2008 WM64)
418849 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.9 AU to 1.11 AU from the Sun; one orbit takes 368.6 days. Discovered 24 November 2008 by Mt. Lemmon Survey. Orbit from the JPL solution of 2 October 2025.
Where is it now
- Distance from Sun
- 0.904 AU
- True anomaly
- 19.39°
- Distance from Earth
- 0.733 AU
- As of
- 3 November 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.
In the sky
- Right ascension
- 18h 01m 54s
- Declination
- -66° 06′ 17″
- Constellation
- Pavo
- Distance from Earth
- 0.73 AU
- Elongation from the Sun
- 61.07° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
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.
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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
- 1.006 AU
- Eccentricity
- 0.1064
- Inclination
- 33.52°
- Orbital period
- 368.6 days
- Perihelion
- 0.899 AU
- Aphelion
- 1.113 AU
- Longitude of ascending node
- 91.43°
- Argument of periapsis
- 256.8°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 13.5 LD
- 0.0348 AU
- Tisserand (Jupiter)
- 5.901
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 332
- Data arc
- 15.13 years
- First observed
- 24 November 2008
- Last observed
- 11 January 2024
- Residual RMS
- 0.38 ″
- Solution · Otto Matic
- 2 October 2025
Physical properties
- Rotation period
- 2.41 hours
Visual & observation
- Absolute magnitude (H)
- 20.47
Discovery & classification
- Discovered by
- Mt. Lemmon Survey
- Discovery date
- 24 November 2008
- Discovery site
- Mount Lemmon
Also known as 2008 WM64
Close approaches 39 on record
Top-down view of the ecliptic, Earth at the centre, for the 2122-06-16 20:18 UTC close approach of 418849. Catalogue miss distance 61.1 LD · 2.35 × 10⁷ km. The curve is the geocentric path from 2122-06-13 to 2122-06-19, 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.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2122-06-16 20:18:00 | Earth | 0.157 AU | 61.1 LD | 18.9 km/s |
| 2123-06-19 09:04:00 | Earth | 0.1106 AU | 43.0 LD | 18.4 km/s |
| 2124-06-20 19:56:00 | Earth | 0.0696 AU | 27.1 LD | 18 km/s |
| 2125-06-23 04:17:00 | Earth | 0.0452 AU | 17.6 LD | 17.6 km/s |
| 2126-06-25 11:24:00 | Earth | 0.0573 AU | 22.3 LD | 17.4 km/s |
| 2127-06-27 20:14:00 | Earth | 0.0929 AU | 36.2 LD | 17.3 km/s |
| 2128-06-29 06:10:00 | Earth | 0.1358 AU | 52.8 LD | 17.3 km/s |
| 2129-07-01 17:30:00 | Earth | 0.1811 AU | 70.5 LD | 17.4 km/s |
| 2130-12-21 17:56:00 | Earth | 0.1663 AU | 64.7 LD | 17.2 km/s |
| 2131-12-22 16:16:00 | Earth | 0.121 AU | 47.1 LD | 17.2 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB