2018 PN22 is an asteroid in the Aten orbit class. Its orbit takes it from 0.95 AU to 1.03 AU from the Sun; one orbit takes 359.6 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 0.995 AU
- True anomaly
- 260.36°
- Distance from Earth
- 0.42 AU
- As of
- 2 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
- 09h 55m 53s
- Declination
- +23° 00′ 40″
- Constellation
- Leo
- Distance from Earth
- 0.42 AU
- Elongation from the Sun
- 78.13° — 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
- 0.99 AU
- Eccentricity
- 0.0418
- Inclination
- 4.43°
- Orbital period
- 359.6 days
- Perihelion
- 0.948 AU
- Aphelion
- 1.031 AU
- Longitude of ascending node
- 313.38°
- Argument of periapsis
- 210.61°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 3.7 LD
- 0.0094 AU
- Tisserand (Jupiter)
- 6.126
Orbit quality
Orbit reasonably well determined (uncertainty code 3).
- Observations used
- 22
- Data arc
- 31 days
- First observed
- 7 August 2018
- Last observed
- 7 September 2018
- Residual RMS
- 0.49 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 27.5
Discovery & classification
Close approaches 63 on record
Top-down view of the ecliptic, Earth at the centre, for the 2026-11-29 11:00 UTC close approach of 2018 PN22. Catalogue miss distance 168.3 LD · 6.47 × 10⁷ km. The curve is the geocentric path from 2026-11-26 to 2026-12-02, 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 |
|---|---|---|---|---|
| 2026-11-29 11:00:00 | Earth | 0.4324 AU | 168.3 LD | 14.2 km/s |
| 2079-08-05 05:01:00 | Earth | 0.4511 AU | 175.6 LD | 14.5 km/s |
| 2080-08-01 09:30:00 | Earth | 0.3579 AU | 139.3 LD | 11.8 km/s |
| 2081-07-29 10:32:00 | Earth | 0.2657 AU | 103.4 LD | 9.1 km/s |
| 2082-07-27 10:04:00 | Earth | 0.1762 AU | 68.6 LD | 6.6 km/s |
| 2083-07-27 12:33:00 | Earth | 0.0927 AU | 36.1 LD | 4.3 km/s |
| 2084-07-29 11:51:00 | Earth | 0.0258 AU | 10.0 LD | 2.8 km/s |
| 2085-07-30 12:30:00 | Earth | 0.015 AU | 5.8 LD | 2.6 km/s |
| 2086-07-25 11:38:00 | Earth | 0.0458 AU | 17.8 LD | 3.1 km/s |
| 2087-07-21 09:01:00 | Earth | 0.1144 AU | 44.5 LD | 4.7 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