539694 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.85 AU to 1.22 AU from the Sun; one orbit takes 384.8 days. Discovered 13 October 2016 by Mt. Lemmon Survey. Orbit from the JPL solution of 14 April 2021.
Where is it now
- Distance from Sun
- 0.867 AU
- True anomaly
- 26.55°
- Distance from Earth
- 1.847 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
- 15h 02m 36s
- Declination
- -13° 33′ 30″
- Constellation
- Libra
- Distance from Earth
- 1.85 AU
- Elongation from the Sun
- 5.92° — too close to the Sun to observe
Visible from both hemispheres.
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
- 1.035 AU
- Eccentricity
- 0.1757
- Inclination
- 22.73°
- Orbital period
- 384.8 days
- Perihelion
- 0.853 AU
- Aphelion
- 1.217 AU
- Longitude of ascending node
- 214.23°
- Argument of periapsis
- 353.24°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 58.9 LD
- 0.1513 AU
- Tisserand (Jupiter)
- 5.836
Orbit quality
Orbit very well determined (uncertainty code 2).
- Observations used
- 118
- Data arc
- 745 days
- First observed
- 13 October 2016
- Last observed
- 28 October 2018
- Residual RMS
- 0.52 ″
- Solution · Otto Matic
- 14 April 2021
Visual & observation
- Absolute magnitude (H)
- 21.32
Discovery & classification
- Discovered by
- Mt. Lemmon Survey
- Discovery date
- 13 October 2016
- Discovery site
- Mount Lemmon
Also known as 2016 TE93
Close approaches 135 on record
Top-down view of the ecliptic, Earth at the centre, for the 2034-12-11 13:39 UTC close approach of 539694. Catalogue miss distance 170.6 LD · 6.56 × 10⁷ km. The curve is the geocentric path from 2034-12-08 to 2034-12-14, 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. At closest approach the object is south of the ecliptic. 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 |
|---|---|---|---|---|
| 2034-12-11 13:39:00 | Earth | 0.4383 AU | 170.6 LD | 14.2 km/s |
| 2035-02-20 01:08:00 | Earth | 0.4336 AU | 168.7 LD | 16 km/s |
| 2035-11-17 00:48:00 | Earth | 0.2806 AU | 109.2 LD | 12.3 km/s |
| 2036-04-04 04:28:00 | Earth | 0.2093 AU | 81.5 LD | 14.1 km/s |
| 2036-10-27 06:39:00 | Earth | 0.222 AU | 86.4 LD | 12 km/s |
| 2037-05-11 05:25:00 | Earth | 0.1942 AU | 75.6 LD | 14 km/s |
| 2037-10-07 03:10:00 | Earth | 0.2958 AU | 115.1 LD | 12.2 km/s |
| 2038-06-21 08:58:00 | Earth | 0.4094 AU | 159.3 LD | 15.9 km/s |
| 2038-09-07 18:30:00 | Earth | 0.4405 AU | 171.4 LD | 13 km/s |
| 2054-03-13 18:37:00 | Venus | 0.1388 AU | 54.0 LD | 15.5 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