Where is it now
- Distance from Sun
- 1.07 AU
- True anomaly
- 197.79°
- Distance from Earth
- 1.614 AU
- As of
- 16 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
- 11h 25m 21s
- Declination
- +17° 44′ 16″
- Constellation
- Leo
- Distance from Earth
- 1.61 AU
- Elongation from the Sun
- 40.34° — near the Sun — look low at dusk or dawn
Favours the northern hemisphere; low or below the horizon from far south.
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
- 0.752 AU
- Eccentricity
- 0.4895
- Inclination
- 31.71°
- Orbital period
- 238 days
- Perihelion
- 0.384 AU
- Aphelion
- 1.12 AU
- Longitude of ascending node
- 91.72°
- Argument of periapsis
- 201.76°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 20.4 LD
- 0.0524 AU
- Tisserand (Jupiter)
- 7.487
Orbit quality
Orbit poorly determined (uncertainty code 6).
- Observations used
- 17
- Data arc
- 4 days
- First observed
- 22 December 2025
- Last observed
- 26 December 2025
- Residual RMS
- 0.53 ″
- Solution · Otto Matic
- 26 December 2025
Visual & observation
- Absolute magnitude (H)
- 24.21
Discovery & classification
Close approaches 74 on record
Top-down view of the ecliptic, Earth at the centre, for the 2038-12-20 19:50 UTC close approach of 2025 YM5. Catalogue miss distance 29.2 LD · 1.12 × 10⁷ km. The curve is the geocentric path from 2038-12-17 to 2038-12-23, 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 |
|---|---|---|---|---|
| 2031-08-08 10:56:00 | Merc | 0.0968 AU | 37.7 LD | 31.1 km/s |
| 2031-08-08 10:56:00 | Mercury | 0.0968 AU | 37.7 LD | 31.1 km/s |
| 2036-02-25 09:47:00 | Mercury | 0.0731 AU | 28.4 LD | 29.2 km/s |
| 2036-02-25 09:47:00 | Merc | 0.0731 AU | 28.4 LD | 29.2 km/s |
| 2038-12-20 19:50:00 | Earth | 0.075 AU | 29.2 LD | 19.3 km/s |
| 2040-12-25 09:53:00 | Earth | 0.1552 AU | 60.4 LD | 16.8 km/s |
| 2042-09-05 17:38:00 | Merc | 0.0945 AU | 36.8 LD | 30.9 km/s |
| 2042-09-05 17:38:00 | Mercury | 0.0945 AU | 36.8 LD | 30.9 km/s |
| 2047-03-26 00:53:00 | Mercury | 0.0729 AU | 28.4 LD | 29.2 km/s |
| 2047-03-26 00:53:00 | Merc | 0.0729 AU | 28.4 LD | 29.2 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