2010 CD55 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.82 AU to 1.23 AU from the Sun; one orbit takes 378.4 days; it is about 0.08 km across. Orbit from the JPL solution of 1 March 2023.
Where is it now
- Distance from Sun
- 0.865 AU
- True anomaly
- 312.58°
- Distance from Earth
- 1.819 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
- 13h 54m 08s
- Declination
- -14° 05′ 23″
- Constellation
- Virgo
- Distance from Earth
- 1.82 AU
- Elongation from the Sun
- 10.69° — 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
- 0.2013
- Inclination
- 5.93°
- Orbital period
- 378.4 days
- Perihelion
- 0.818 AU
- Aphelion
- 1.23 AU
- Longitude of ascending node
- 326.79°
- Argument of periapsis
- 279.37°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 4.6 LD
- 0.0119 AU
- Tisserand (Jupiter)
- 5.947
Orbit quality
Orbit very well determined (uncertainty code 2).
- Observations used
- 62
- Data arc
- 4.68 years
- First observed
- 15 February 2010
- Last observed
- 23 October 2014
- Residual RMS
- 0.46 ″
- Solution · Otto Matic
- 1 March 2023
Physical properties
- Mean radius
- 0.04 km
Visual & observation
- Geometric albedo
- 0.145
- Absolute magnitude (H)
- 23.36
Discovery & classification
Close approaches 121 on record
Top-down view of the ecliptic, Earth at the centre, for the 2037-02-08 15:01 UTC close approach of 2010 CD55. Catalogue miss distance 131.1 LD · 5.04 × 10⁷ km. The curve is the geocentric path from 2037-02-05 to 2037-02-11, 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 |
|---|---|---|---|---|
| 2032-02-11 00:07:00 | Venus | 0.1492 AU | 58.1 LD | 4.9 km/s |
| 2037-02-08 15:01:00 | Earth | 0.337 AU | 131.1 LD | 17 km/s |
| 2038-02-17 23:41:00 | Earth | 0.1113 AU | 43.3 LD | 10.2 km/s |
| 2039-02-19 14:19:00 | Earth | 0.1139 AU | 44.3 LD | 4.5 km/s |
| 2039-12-27 07:36:00 | Earth | 0.244 AU | 95.0 LD | 6 km/s |
| 2040-05-21 13:14:00 | Earth | 0.2155 AU | 83.9 LD | 6.7 km/s |
| 2040-11-20 08:04:00 | Earth | 0.2662 AU | 103.6 LD | 6.1 km/s |
| 2041-07-15 21:53:00 | Earth | 0.1736 AU | 67.6 LD | 5.7 km/s |
| 2041-10-04 22:38:00 | Earth | 0.1981 AU | 77.1 LD | 4.5 km/s |
| 2042-09-04 09:50:00 | Earth | 0.0338 AU | 13.2 LD | 7.7 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB