419624
Add to an observing list or journal →419624 (2010 SO16)
419624 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.93 AU to 1.08 AU from the Sun; one orbit takes 367.5 days; it is about 0.36 km across. Discovered 17 September 2010 by WISE. Orbit from the JPL solution of 1 March 2023.
Where is it now
- Distance from Sun
- 1.068 AU
- True anomaly
- 209.9°
- Distance from Earth
- 0.738 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
- 20h 02m 17s
- Declination
- -34° 27′ 30″
- Constellation
- Sagittarius
- Distance from Earth
- 0.74 AU
- Elongation from the Sun
- 74.63° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
From your location
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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
- 1.004 AU
- Eccentricity
- 0.0754
- Inclination
- 14.51°
- Orbital period
- 367.5 days
- Perihelion
- 0.928 AU
- Aphelion
- 1.08 AU
- Longitude of ascending node
- 40.34°
- Argument of periapsis
- 109.24°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 11.8 LD
- 0.0302 AU
- Tisserand (Jupiter)
- 6.031
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 350
- Data arc
- 12.24 years
- First observed
- 17 August 2010
- Last observed
- 14 November 2022
- Residual RMS
- 0.59 ″
- Solution · Otto Matic
- 1 March 2023
Physical properties
- Mean radius
- 0.18 km
Visual & observation
- Geometric albedo
- 0.084
- Absolute magnitude (H)
- 20.44
Discovery & classification
- Discovered by
- WISE
- Discovery date
- 17 September 2010
- Discovery site
- WISE
Also known as 2010 SO16
Close approaches 68 on record
Top-down view of the ecliptic, Earth at the centre, for the 2169-10-30 18:14 UTC close approach of 419624. Catalogue miss distance 191.2 LD · 7.35 × 10⁷ km. The curve is the geocentric path from 2169-10-27 to 2169-11-02, 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 |
|---|---|---|---|---|
| 2169-10-30 18:14:00 | Earth | 0.4914 AU | 191.2 LD | 18.1 km/s |
| 2170-11-01 02:45:00 | Earth | 0.4561 AU | 177.5 LD | 17.1 km/s |
| 2171-11-02 11:00:00 | Earth | 0.4214 AU | 164.0 LD | 16.2 km/s |
| 2172-11-02 11:23:00 | Earth | 0.3874 AU | 150.7 LD | 15.3 km/s |
| 2173-11-03 16:11:00 | Earth | 0.3544 AU | 137.9 LD | 14.4 km/s |
| 2174-11-04 13:43:00 | Earth | 0.3225 AU | 125.5 LD | 13.6 km/s |
| 2175-11-05 11:17:00 | Earth | 0.2919 AU | 113.6 LD | 12.8 km/s |
| 2176-11-05 06:52:00 | Earth | 0.263 AU | 102.4 LD | 12.1 km/s |
| 2177-11-05 20:03:00 | Earth | 0.2363 AU | 92.0 LD | 11.5 km/s |
| 2178-11-06 11:46:00 | Earth | 0.2117 AU | 82.4 LD | 10.9 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)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB