443103
Add to an observing list or journal →443103 (2013 WT67)
443103 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.84 AU to 1.23 AU from the Sun; one orbit takes 384.5 days. Discovered 29 November 2013 by Spacewatch. Orbit from the JPL solution of 14 November 2025.
Where is it now
- Distance from Sun
- 1.199 AU
- True anomaly
- 151.39°
- Distance from Earth
- 2.148 AU
- As of
- 4 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
- 14h 01m 56s
- Declination
- -24° 13′ 45″
- Constellation
- Hydra
- Distance from Earth
- 2.15 AU
- Elongation from the Sun
- 12.41° — too close to the Sun to observe
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
- 1.035 AU
- Eccentricity
- 0.1921
- Inclination
- 21.47°
- Orbital period
- 384.5 days
- Perihelion
- 0.836 AU
- Aphelion
- 1.234 AU
- Longitude of ascending node
- 322.75°
- Argument of periapsis
- 99.05°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 5.0 LD
- 0.013 AU
- Tisserand (Jupiter)
- 5.843
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 630
- Data arc
- 7.45 years
- First observed
- 29 November 2013
- Last observed
- 13 May 2021
- Residual RMS
- 0.39 ″
- Solution · Otto Matic
- 14 November 2025
Physical properties
- Rotation period
- 5.63 days
Visual & observation
- Absolute magnitude (H)
- 17.97
Discovery & classification
- Discovered by
- Spacewatch
- Discovery date
- 29 November 2013
- Discovery site
- Kitt Peak
Also known as 2013 WT67
Close approaches 38 on record
Top-down view of the ecliptic, Earth at the centre, for the 2034-08-18 09:03 UTC close approach of 443103. Catalogue miss distance 24.2 LD · 9.29 × 10⁶ km. The curve is the geocentric path from 2034-08-15 to 2034-08-21, 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 |
|---|---|---|---|---|
| 2034-08-18 09:03:00 | Earth | 0.0621 AU | 24.2 LD | 11.5 km/s |
| 2036-02-04 23:06:00 | Earth | 0.189 AU | 73.6 LD | 11.3 km/s |
| 2037-02-19 07:37:00 | Earth | 0.1475 AU | 57.4 LD | 15 km/s |
| 2053-08-11 13:24:00 | Earth | 0.1584 AU | 61.7 LD | 14.8 km/s |
| 2054-08-19 21:20:00 | Earth | 0.1666 AU | 64.8 LD | 10.9 km/s |
| 2056-02-09 23:03:00 | Earth | 0.0796 AU | 31.0 LD | 11.7 km/s |
| 2073-08-13 12:19:00 | Earth | 0.1021 AU | 39.7 LD | 13.7 km/s |
| 2076-02-12 03:25:00 | Earth | 0.0353 AU | 13.8 LD | 12.2 km/s |
| 2093-08-10 05:05:00 | Earth | 0.1904 AU | 74.1 LD | 15.5 km/s |
| 2094-08-19 14:10:00 | Earth | 0.1243 AU | 48.4 LD | 11 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