Where is it now
- Distance from Sun
- 2.966 AU
- True anomaly
- 215.96°
- Distance from Earth
- 2.177 AU
- As of
- 11 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
- 02h 00m 43s
- Declination
- +51° 10′ 13″
- Constellation
- Perseus
- Distance from Earth
- 2.17 AU
- Elongation from the Sun
- 135.06° — well clear of the Sun
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
- 2.417 AU
- Eccentricity
- 0.6367
- Inclination
- 31.93°
- Orbital period
- 3.76 years
- Perihelion
- 0.878 AU
- Aphelion
- 3.956 AU
- Longitude of ascending node
- 347.29°
- Argument of periapsis
- 198.69°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 35.9 LD
- 0.0923 AU
- Tisserand (Jupiter)
- 3.045
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 3,822
- Data arc
- 73.02 years
- First observed
- 1 October 1953
- Last observed
- 7 October 2026
- Residual RMS
- 0.39 ″
- Solution · Otto Matic
- 8 October 2026
Physical properties
- Mean radius
- 1.84 km
- Rotation period
- 5.31 hours
Visual & observation
- Geometric albedo
- 0.123
- Absolute magnitude (H)
- 13.85
- Spectral type (SMASS)
- Sq
Discovery & classification
- Discovered by
- BATTeRS
- Discovery date
- 21 October 2000
- Discovery site
- Bisei SG Center
Also known as 2000 UV13
Close approaches 14 on record
Top-down view of the ecliptic, Earth at the centre, for the 2099-03-13 14:55 UTC close approach of 20826. Catalogue miss distance 53.5 LD · 2.06 × 10⁷ km. The curve is the geocentric path from 2099-03-10 to 2099-03-16, 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 |
|---|---|---|---|---|
| 2070-04-09 00:08:00 | Juptr | 1.7063 AU | 664.0 LD | 10.6 km/s |
| 2081-11-01 17:51:00 | Juptr | 1.1844 AU | 460.9 LD | 8.1 km/s |
| 2093-06-28 13:10:00 | Juptr | 1.6072 AU | 625.5 LD | 7.8 km/s |
| 2099-03-13 14:55:00 | Earth | 0.1375 AU | 53.5 LD | 21.3 km/s |
| 2153-04-04 00:08:00 | Juptr | 1.5798 AU | 614.8 LD | 10.1 km/s |
| 2164-11-06 01:28:00 | Juptr | 1.2051 AU | 469.0 LD | 7.8 km/s |
| 2176-07-13 20:51:00 | Juptr | 1.7335 AU | 674.6 LD | 7.9 km/s |
| 2182-03-07 17:48:00 | Earth | 0.1221 AU | 47.5 LD | 21.6 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB