2025 UB5 is an asteroid in the Aten orbit class. Its orbit takes it from 0.65 AU to 1.31 AU from the Sun; one orbit takes 352.7 days. Orbit from the JPL solution of 20 October 2026.
Where is it now
- Distance from Sun
- 1.138 AU
- True anomaly
- 224.81°
- Distance from Earth
- 0.205 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
- 22h 34m 36s
- Declination
- +09° 28′ 24″
- Constellation
- Pegasus
- Distance from Earth
- 0.2 AU
- Elongation from the Sun
- 130° — 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
- 0.977 AU
- Eccentricity
- 0.3378
- Inclination
- 23.51°
- Orbital period
- 352.7 days
- Perihelion
- 0.647 AU
- Aphelion
- 1.307 AU
- Longitude of ascending node
- 211.37°
- Argument of periapsis
- 307.31°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 27.4 LD
- 0.0703 AU
- Tisserand (Jupiter)
- 6.074
Orbit quality
Orbit very well determined (uncertainty code 2).
- Observations used
- 70
- Data arc
- 363 days
- First observed
- 21 October 2025
- Last observed
- 19 October 2026
- Residual RMS
- 0.56 ″
- Solution · Otto Matic
- 20 October 2026
Visual & observation
- Absolute magnitude (H)
- 21.78
Discovery & classification
Close approaches 39 on record
Top-down view of the ecliptic, Earth at the centre, for the 2026-10-27 11:10 UTC close approach of 2025 UB5. Catalogue miss distance 73.9 LD · 2.84 × 10⁷ km. The curve is the geocentric path from 2026-10-24 to 2026-10-30, 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 |
|---|---|---|---|---|
| 2026-10-27 11:10:00 | Earth | 0.1899 AU | 73.9 LD | 12.7 km/s |
| 2027-10-31 10:28:00 | Earth | 0.0718 AU | 27.9 LD | 15.1 km/s |
| 2047-06-11 11:52:00 | Venus | 0.1346 AU | 52.4 LD | 22.6 km/s |
| 2054-03-16 10:09:00 | Venus | 0.0919 AU | 35.8 LD | 21.3 km/s |
| 2055-10-31 13:52:00 | Earth | 0.0811 AU | 31.6 LD | 14.2 km/s |
| 2056-10-28 10:54:00 | Earth | 0.1725 AU | 67.1 LD | 18.2 km/s |
| 2060-12-20 03:06:00 | Venus | 0.0684 AU | 26.6 LD | 20.6 km/s |
| 2067-09-26 20:16:00 | Venus | 0.0687 AU | 26.7 LD | 20.6 km/s |
| 2074-07-04 08:05:00 | Venus | 0.0877 AU | 34.1 LD | 21.2 km/s |
| 2081-04-11 03:58:00 | Venus | 0.115 AU | 44.8 LD | 22 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