2020 BL11 is an asteroid in the Aten orbit class. Its orbit takes it from 0.98 AU to 1 AU from the Sun; one orbit takes 359.2 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 0.997 AU
- True anomaly
- 200.16°
- Distance from Earth
- 0.66 AU
- As of
- 2 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
- 10h 18m 40s
- Declination
- +17° 41′ 21″
- Constellation
- Leo
- Distance from Earth
- 0.66 AU
- Elongation from the Sun
- 71.05° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
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
- 0.989 AU
- Eccentricity
- 0.0089
- Inclination
- 5.91°
- Orbital period
- 359.2 days
- Perihelion
- 0.98 AU
- Aphelion
- 0.998 AU
- Longitude of ascending node
- 307.98°
- Argument of periapsis
- 290.57°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 2.7 LD
- 0.0069 AU
- Tisserand (Jupiter)
- 6.129
Orbit quality
Orbit reasonably well determined (uncertainty code 3).
- Observations used
- 25
- Data arc
- 7 days
- First observed
- 26 January 2020
- Last observed
- 2 February 2020
- Residual RMS
- 0.29 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 27.8
Discovery & classification
Close approaches 63 on record
Top-down view of the ecliptic, Earth at the centre, for the 2074-10-10 18:22 UTC close approach of 2020 BL11. Catalogue miss distance 188.2 LD · 7.24 × 10⁷ km. The curve is the geocentric path from 2074-10-07 to 2074-10-13, 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 |
|---|---|---|---|---|
| 2074-10-10 18:22:00 | Earth | 0.4837 AU | 188.2 LD | 15.1 km/s |
| 2075-10-04 10:12:00 | Earth | 0.3847 AU | 149.7 LD | 12.1 km/s |
| 2076-09-24 21:41:00 | Earth | 0.2874 AU | 111.9 LD | 9.3 km/s |
| 2077-09-12 22:54:00 | Earth | 0.194 AU | 75.5 LD | 6.6 km/s |
| 2078-08-28 09:21:00 | Earth | 0.1084 AU | 42.2 LD | 4.5 km/s |
| 2079-01-06 18:30:00 | Earth | 0.1306 AU | 50.8 LD | 4.5 km/s |
| 2079-08-11 09:08:00 | Earth | 0.0411 AU | 16.0 LD | 3.4 km/s |
| 2080-01-18 00:19:00 | Earth | 0.0688 AU | 26.8 LD | 3.4 km/s |
| 2080-07-28 19:22:00 | Earth | 0.0266 AU | 10.3 LD | 3.1 km/s |
| 2081-01-24 19:46:00 | Earth | 0.0299 AU | 11.6 LD | 3.1 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