2004 CE39 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.63 AU to 1.43 AU from the Sun; one orbit takes 380.2 days. Orbit from the JPL solution of 14 April 2021.
Where is it now
- Distance from Sun
- 1.408 AU
- True anomaly
- 192.49°
- Distance from Earth
- 1.454 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
- 10h 11m 13s
- Declination
- -00° 46′ 17″
- Constellation
- Sextans
- Distance from Earth
- 1.45 AU
- Elongation from the Sun
- 67.49° — well clear of the Sun
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
- 1.027 AU
- Eccentricity
- 0.3913
- Inclination
- 17.71°
- Orbital period
- 380.2 days
- Perihelion
- 0.625 AU
- Aphelion
- 1.429 AU
- Longitude of ascending node
- 153.2°
- Argument of periapsis
- 126.13°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 30.2 LD
- 0.0776 AU
- Tisserand (Jupiter)
- 5.845
Orbit quality
Orbit very well determined (uncertainty code 2).
- Observations used
- 137
- Data arc
- 340 days
- First observed
- 14 February 2004
- Last observed
- 19 January 2005
- Residual RMS
- 0.52 ″
- Solution · Otto Matic
- 14 April 2021
Visual & observation
- Absolute magnitude (H)
- 21.4
Discovery & classification
Close approaches 148 on record
Top-down view of the ecliptic, Earth at the centre, for the 2028-02-25 22:24 UTC close approach of 2004 CE39. Catalogue miss distance 118.1 LD · 4.54 × 10⁷ km. The curve is the geocentric path from 2028-02-22 to 2028-02-28, 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 |
|---|---|---|---|---|
| 2028-02-25 22:24:00 | Earth | 0.3036 AU | 118.1 LD | 23 km/s |
| 2029-03-04 20:01:00 | Earth | 0.0903 AU | 35.2 LD | 16.1 km/s |
| 2030-03-02 15:59:00 | Earth | 0.2063 AU | 80.3 LD | 11.6 km/s |
| 2031-02-11 09:15:00 | Earth | 0.3802 AU | 148.0 LD | 11.6 km/s |
| 2031-05-25 03:36:00 | Earth | 0.4339 AU | 168.9 LD | 12.9 km/s |
| 2032-01-22 17:36:00 | Earth | 0.4867 AU | 189.4 LD | 12.1 km/s |
| 2032-06-27 19:21:00 | Earth | 0.4424 AU | 172.2 LD | 16.5 km/s |
| 2033-07-28 09:52:00 | Earth | 0.3917 AU | 152.4 LD | 16.6 km/s |
| 2034-08-29 07:27:00 | Earth | 0.3001 AU | 116.8 LD | 14.7 km/s |
| 2035-09-30 00:13:00 | Earth | 0.2149 AU | 83.6 LD | 14.8 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