2020 HN3 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.9 AU to 1.14 AU from the Sun; one orbit takes 376 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 0.943 AU
- True anomaly
- 54.65°
- Distance from Earth
- 0.663 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
- 19h 18m 43s
- Declination
- -24° 08′ 46″
- Constellation
- Sagittarius
- Distance from Earth
- 0.66 AU
- Elongation from the Sun
- 66.14° — well clear of the Sun
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.
Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.
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
- 1.02 AU
- Eccentricity
- 0.1152
- Inclination
- 2.92°
- Orbital period
- 376 days
- Perihelion
- 0.902 AU
- Aphelion
- 1.137 AU
- Longitude of ascending node
- 29.36°
- Argument of periapsis
- 277.3°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 0.6 LD
- 0.0015 AU
- Tisserand (Jupiter)
- 5.982
Orbit quality
Orbit poorly determined (uncertainty code 6).
- Observations used
- 12
- Data arc
- 3 days
- First observed
- 19 April 2020
- Last observed
- 22 April 2020
- Residual RMS
- 0.6 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 29.4
Discovery & classification
Listed by JPL impact monitoring; see the Sentry table for current probabilities.
Close approaches 20 on record
Top-down view of the ecliptic, Earth at the centre, for the 2053-04-10 17:22 UTC close approach of 2020 HN3. Catalogue miss distance 143.6 LD · 5.52 × 10⁷ km. The curve is the geocentric path from 2053-04-07 to 2053-04-13, 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 |
|---|---|---|---|---|
| 2053-04-10 17:22:00 | Earth | 0.3691 AU | 143.6 LD | 15 km/s |
| 2054-04-18 08:56:00 | Earth | 0.1877 AU | 73.1 LD | 9.6 km/s |
| 2055-04-26 00:03:00 | Earth | 0.0094 AU | 3.6 LD | 4.4 km/s |
| 2055-04-26 09:35:00 | Moon | 0.0097 AU | 3.8 LD | 4.4 km/s |
| 2061-11-05 04:26:00 | Earth | 0.1582 AU | 61.6 LD | 8.8 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