Where is it now
- Distance from Sun
- 0.81 AU
- True anomaly
- 112.43°
- Distance from Earth
- 0.244 AU
- As of
- 16 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
- 15h 42m 38s
- Declination
- +03° 18′ 24″
- Constellation
- Serpens
- Distance from Earth
- 0.24 AU
- Elongation from the Sun
- 35.73° — 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
- 0.79 AU
- Eccentricity
- 0.3084
- Inclination
- 7.74°
- Orbital period
- 256.6 days
- Perihelion
- 0.547 AU
- Aphelion
- 1.034 AU
- Longitude of ascending node
- 252.89°
- Argument of periapsis
- 10.1°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 11.7 LD
- 0.0301 AU
- Tisserand (Jupiter)
- 7.32
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 26
- Data arc
- 24 hours
- First observed
- 2 December 2019
- Last observed
- 3 December 2019
- Residual RMS
- 0.48 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 26.6
Discovery & classification
Close approaches 57 on record
Top-down view of the ecliptic, Earth at the centre, for the 2026-11-17 19:30 UTC close approach of 2019 XL. Catalogue miss distance 39.8 LD · 1.53 × 10⁷ km. The curve is the geocentric path from 2026-11-14 to 2026-11-20, 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 north 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 |
|---|---|---|---|---|
| 2026-10-03 11:56:00 | Venus | 0.1381 AU | 53.7 LD | 10.7 km/s |
| 2026-11-17 19:30:00 | Earth | 0.1023 AU | 39.8 LD | 10.4 km/s |
| 2029-06-13 04:12:00 | Earth | 0.469 AU | 182.5 LD | 17.4 km/s |
| 2031-07-20 07:15:00 | Mercury | 0.0895 AU | 34.8 LD | 13.5 km/s |
| 2031-07-20 07:15:00 | Merc | 0.0895 AU | 34.8 LD | 13.5 km/s |
| 2031-09-04 07:51:00 | Venus | 0.1402 AU | 54.5 LD | 9.9 km/s |
| 2032-01-12 17:26:00 | Earth | 0.1676 AU | 65.2 LD | 11.7 km/s |
| 2033-11-19 08:55:00 | Earth | 0.2527 AU | 98.3 LD | 15.4 km/s |
| 2039-12-24 12:31:00 | Merc | 0.0866 AU | 33.7 LD | 13.1 km/s |
| 2039-12-24 12:31:00 | Mercury | 0.0866 AU | 33.7 LD | 13.1 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