2013 BQ18 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.87 AU to 1.18 AU from the Sun; one orbit takes 379 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 0.904 AU
- True anomaly
- 42.61°
- Distance from Earth
- 1.804 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
- 15h 44m 50s
- Declination
- -10° 03′ 57″
- Constellation
- Libra
- Distance from Earth
- 1.8 AU
- Elongation from the Sun
- 17.1° — too close to the Sun to observe
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
- 1.025 AU
- Eccentricity
- 0.1478
- Inclination
- 26.5°
- Orbital period
- 379 days
- Perihelion
- 0.873 AU
- Aphelion
- 1.176 AU
- Longitude of ascending node
- 117.27°
- Argument of periapsis
- 89.04°
- Epoch · J2000
- 2456311.5
- Orbit class · APO
- Apollo
- Earth MOID · 4.1 LD
- 0.0106 AU
- Tisserand (Jupiter)
- 5.863
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 8).
- Observations used
- 22
- Data arc
- 24 hours
- First observed
- 18 January 2013
- Last observed
- 19 January 2013
- Residual RMS
- 0.3 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 25.3
Discovery & classification
Close approaches 21 on record
Top-down view of the ecliptic, Earth at the centre, for the 2040-01-09 16:01 UTC close approach of 2013 BQ18. Catalogue miss distance 113.9 LD · 4.38 × 10⁷ km. The curve is the geocentric path from 2040-01-06 to 2040-01-12, 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 |
|---|---|---|---|---|
| 2040-01-09 16:01:00 | Earth | 0.2927 AU | 113.9 LD | 19.3 km/s |
| 2041-01-16 02:07:00 | Earth | 0.0697 AU | 27.1 LD | 15.3 km/s |
| 2042-01-21 12:18:00 | Earth | 0.1526 AU | 59.4 LD | 13.7 km/s |
| 2042-07-09 02:44:00 | Earth | 0.3467 AU | 134.9 LD | 14.5 km/s |
| 2043-07-16 02:21:00 | Earth | 0.131 AU | 51.0 LD | 13.5 km/s |
| 2044-07-23 12:18:00 | Earth | 0.0856 AU | 33.3 LD | 15.2 km/s |
| 2045-08-01 15:22:00 | Earth | 0.302 AU | 117.5 LD | 19.1 km/s |
| 2068-01-04 15:57:00 | Earth | 0.4355 AU | 169.5 LD | 22.6 km/s |
| 2069-01-11 16:18:00 | Earth | 0.2146 AU | 83.5 LD | 17.7 km/s |
| 2070-01-18 12:54:00 | Earth | 0.0163 AU | 6.4 LD | 14.4 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