2025 CT1 is an asteroid in the Aten orbit class. Its orbit takes it from 0.86 AU to 1.09 AU from the Sun; one orbit takes 353.1 days. Orbit from the JPL solution of 18 March 2025.
Where is it now
- Distance from Sun
- 1.072 AU
- True anomaly
- 148.03°
- Distance from Earth
- 0.725 AU
- As of
- 24 October 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
- 09h 13m 11s
- Declination
- +14° 32′ 37″
- Constellation
- Cancer
- Distance from Earth
- 0.72 AU
- Elongation from the Sun
- 75.41° — 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
- 0.978 AU
- Eccentricity
- 0.1191
- Inclination
- 1.67°
- Orbital period
- 353.1 days
- Perihelion
- 0.861 AU
- Aphelion
- 1.094 AU
- Longitude of ascending node
- 109.22°
- Argument of periapsis
- 174.91°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 10.5 LD
- 0.027 AU
- Tisserand (Jupiter)
- 6.182
Orbit quality
Orbit reasonably well determined (uncertainty code 4).
- Observations used
- 41
- Data arc
- 42 days
- First observed
- 3 February 2025
- Last observed
- 17 March 2025
- Residual RMS
- 0.54 ″
- Solution · Otto Matic
- 18 March 2025
Visual & observation
- Absolute magnitude (H)
- 25.37
Discovery & classification
Close approaches 54 on record
Top-down view of the ecliptic, Earth at the centre, for the 2051-10-24 01:47 UTC close approach of 2025 CT1. Catalogue miss distance 12.9 LD · 4.94 × 10⁶ km. The curve is the geocentric path from 2051-10-21 to 2051-10-27, 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 |
|---|---|---|---|---|
| 2051-10-24 01:47:00 | Earth | 0.033 AU | 12.9 LD | 4.5 km/s |
| 2052-08-15 18:33:00 | Earth | 0.1342 AU | 52.2 LD | 4 km/s |
| 2052-12-22 15:46:00 | Earth | 0.1091 AU | 42.5 LD | 3.6 km/s |
| 2053-06-22 02:07:00 | Earth | 0.1507 AU | 58.7 LD | 4.6 km/s |
| 2054-03-02 17:07:00 | Earth | 0.0692 AU | 26.9 LD | 2.7 km/s |
| 2055-03-17 12:50:00 | Earth | 0.1219 AU | 47.4 LD | 7.6 km/s |
| 2057-05-29 09:40:00 | Venus | 0.1409 AU | 54.8 LD | 1.1 km/s |
| 2064-02-16 17:07:00 | Venus | 0.1436 AU | 55.9 LD | 1.6 km/s |
| 2082-10-25 19:16:00 | Earth | 0.1215 AU | 47.3 LD | 7.6 km/s |
| 2083-11-10 10:04:00 | Earth | 0.0704 AU | 27.4 LD | 2.7 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