2017 KG3 is an asteroid in the Aten orbit class. Its orbit takes it from 0.62 AU to 1.33 AU from the Sun; one orbit takes 352.7 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 0.623 AU
- True anomaly
- 357.88°
- Distance from Earth
- 1.068 AU
- As of
- 25 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.
In the sky
- Right ascension
- 11h 41m 52s
- Declination
- -08° 16′ 48″
- Constellation
- Crater
- Distance from Earth
- 1.07 AU
- Elongation from the Sun
- 34.76° — 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.
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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
- 0.977 AU
- Eccentricity
- 0.3629
- Inclination
- 19.07°
- Orbital period
- 352.7 days
- Perihelion
- 0.622 AU
- Aphelion
- 1.332 AU
- Longitude of ascending node
- 233.88°
- Argument of periapsis
- 240.6°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 5.5 LD
- 0.0142 AU
- Tisserand (Jupiter)
- 6.089
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 68
- Data arc
- 13 days
- First observed
- 17 May 2017
- Last observed
- 30 May 2017
- Residual RMS
- 0.39 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 24.7
Discovery & classification
Close approaches 73 on record
Top-down view of the ecliptic, Earth at the centre, for the 2043-05-30 10:18 UTC close approach of 2017 KG3. Catalogue miss distance 175.0 LD · 6.73 × 10⁷ km. The curve is the geocentric path from 2043-05-27 to 2043-06-02, 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 |
|---|---|---|---|---|
| 2043-05-30 10:18:00 | Earth | 0.4496 AU | 175.0 LD | 25.8 km/s |
| 2044-05-21 04:29:00 | Earth | 0.2493 AU | 97.0 LD | 20.2 km/s |
| 2045-05-14 06:31:00 | Earth | 0.0475 AU | 18.5 LD | 15 km/s |
| 2046-05-12 20:52:00 | Earth | 0.1522 AU | 59.2 LD | 11.2 km/s |
| 2051-10-19 02:46:00 | Earth | 0.2084 AU | 81.1 LD | 14.8 km/s |
| 2052-09-30 17:28:00 | Earth | 0.2853 AU | 111.0 LD | 18.5 km/s |
| 2053-09-17 14:59:00 | Earth | 0.4395 AU | 171.0 LD | 23.6 km/s |
| 2072-05-27 10:02:00 | Earth | 0.3956 AU | 154.0 LD | 24.3 km/s |
| 2073-05-19 13:15:00 | Earth | 0.1985 AU | 77.2 LD | 18.8 km/s |
| 2074-05-13 09:25:00 | Earth | 0.0134 AU | 5.2 LD | 13.9 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB