2011 GB55 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.55 AU to 1.5 AU from the Sun; one orbit takes 378.4 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.27 AU
- True anomaly
- 142.28°
- Distance from Earth
- 2.248 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
- 14h 09m 15s
- Declination
- -13° 04′ 30″
- Constellation
- Virgo
- Distance from Earth
- 2.25 AU
- Elongation from the Sun
- 7.36° — 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
- 1.024 AU
- Eccentricity
- 0.4676
- Inclination
- 13.94°
- Orbital period
- 378.4 days
- Perihelion
- 0.545 AU
- Aphelion
- 1.503 AU
- Longitude of ascending node
- 28.68°
- Argument of periapsis
- 37.57°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 40.6 LD
- 0.1042 AU
- Tisserand (Jupiter)
- 5.843
Orbit quality
Orbit very well determined (uncertainty code 2).
- Observations used
- 67
- Data arc
- 371 days
- First observed
- 6 April 2011
- Last observed
- 11 April 2012
- Residual RMS
- 0.49 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 21.8
Discovery & classification
Close approaches 200 on record
Top-down view of the ecliptic, Earth at the centre, for the 2030-07-20 00:17 UTC close approach of 2011 GB55. Catalogue miss distance 168.4 LD · 6.48 × 10⁷ km. The curve is the geocentric path from 2030-07-17 to 2030-07-23, 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 |
|---|---|---|---|---|
| 2030-07-20 00:17:00 | Earth | 0.4328 AU | 168.4 LD | 25.3 km/s |
| 2031-07-31 12:05:00 | Earth | 0.2806 AU | 109.2 LD | 18.9 km/s |
| 2031-08-28 03:12:00 | Venus | 0.1197 AU | 46.6 LD | 21 km/s |
| 2032-08-14 11:08:00 | Earth | 0.2424 AU | 94.3 LD | 13.1 km/s |
| 2033-09-17 16:56:00 | Earth | 0.3285 AU | 127.9 LD | 13.4 km/s |
| 2034-06-27 03:21:00 | Earth | 0.4739 AU | 184.4 LD | 10.9 km/s |
| 2034-10-15 06:55:00 | Venus | 0.1242 AU | 48.3 LD | 13.7 km/s |
| 2034-10-16 17:59:00 | Earth | 0.3968 AU | 154.4 LD | 17.4 km/s |
| 2035-11-10 00:40:00 | Earth | 0.4379 AU | 170.4 LD | 19.8 km/s |
| 2036-12-02 03:30:00 | Earth | 0.456 AU | 177.4 LD | 20 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