2025 DD is an asteroid in the Apollo orbit class. Its orbit takes it from 0.57 AU to 1.49 AU from the Sun; one orbit takes 380.3 days. Orbit from the JPL solution of 6 March 2025.
Where is it now
- Distance from Sun
- 1.061 AU
- True anomaly
- 239.65°
- Distance from Earth
- 1.807 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
- 16h 40m 07s
- Declination
- -16° 03′ 38″
- Constellation
- Ophiuchus
- Distance from Earth
- 1.8 AU
- Elongation from the Sun
- 29.23° — near the Sun — look low at dusk or dawn
Favours the southern hemisphere; low or below the horizon from far north.
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
- 0.4485
- Inclination
- 14.2°
- Orbital period
- 380.3 days
- Perihelion
- 0.567 AU
- Aphelion
- 1.488 AU
- Longitude of ascending node
- 144.32°
- Argument of periapsis
- 252.53°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 6.9 LD
- 0.0178 AU
- Tisserand (Jupiter)
- 5.835
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 46
- Data arc
- 17 days
- First observed
- 16 February 2025
- Last observed
- 5 March 2025
- Residual RMS
- 0.42 ″
- Solution · Otto Matic
- 6 March 2025
Visual & observation
- Absolute magnitude (H)
- 24.1
Discovery & classification
Close approaches 33 on record
Top-down view of the ecliptic, Earth at the centre, for the 2050-02-14 01:30 UTC close approach of 2025 DD. Catalogue miss distance 37.9 LD · 1.46 × 10⁷ km. The curve is the geocentric path from 2050-02-11 to 2050-02-17, 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 |
|---|---|---|---|---|
| 2050-02-14 01:30:00 | Earth | 0.0975 AU | 37.9 LD | 12.9 km/s |
| 2051-02-23 13:45:00 | Earth | 0.1583 AU | 61.6 LD | 19.8 km/s |
| 2055-04-01 23:06:00 | Venus | 0.1415 AU | 55.1 LD | 12.5 km/s |
| 2068-07-11 09:41:00 | Earth | 0.1547 AU | 60.2 LD | 15.7 km/s |
| 2068-10-13 08:31:00 | Venus | 0.1417 AU | 55.1 LD | 12.4 km/s |
| 2075-02-13 08:18:00 | Earth | 0.1794 AU | 69.8 LD | 11 km/s |
| 2076-02-20 14:00:00 | Earth | 0.0779 AU | 30.3 LD | 17.5 km/s |
| 2082-04-27 09:49:00 | Venus | 0.133 AU | 51.8 LD | 13.2 km/s |
| 2093-07-08 13:53:00 | Earth | 0.1683 AU | 65.5 LD | 17.1 km/s |
| 2095-11-09 20:31:00 | Venus | 0.1232 AU | 47.9 LD | 14.4 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