2020 HP1 is an asteroid in the Aten orbit class. Its orbit takes it from 0.85 AU to 1.11 AU from the Sun; one orbit takes 356.1 days. Orbit from the JPL solution of 28 July 2026.
Where is it now
- Distance from Sun
- 0.857 AU
- True anomaly
- 342.46°
- Distance from Earth
- 0.667 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
- 10h 48m 40s
- Declination
- +02° 13′ 35″
- Constellation
- Sextans
- Distance from Earth
- 0.67 AU
- Elongation from the Sun
- 58.29° — near the Sun — look low at dusk or dawn
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
- 0.983 AU
- Eccentricity
- 0.1329
- Inclination
- 4.5°
- Orbital period
- 356.1 days
- Perihelion
- 0.852 AU
- Aphelion
- 1.114 AU
- Longitude of ascending node
- 203.53°
- Argument of periapsis
- 255.74°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 0.9 LD
- 0.0022 AU
- Tisserand (Jupiter)
- 6.151
Orbit quality
Orbit reasonably well determined (uncertainty code 4).
- Observations used
- 29
- Data arc
- 8 days
- First observed
- 18 April 2020
- Last observed
- 26 April 2020
- Residual RMS
- 0.38 ″
- Solution · Otto Matic
- 28 July 2026
Visual & observation
- Absolute magnitude (H)
- 28.6
Discovery & classification
Close approaches 41 on record
Top-down view of the ecliptic, Earth at the centre, for the 2058-04-21 18:54 UTC close approach of 2020 HP1. Catalogue miss distance 67.4 LD · 2.59 × 10⁷ km. The curve is the geocentric path from 2058-04-18 to 2058-04-24, 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 |
|---|---|---|---|---|
| 2045-05-04 17:26:00 | Venus | 0.1496 AU | 58.2 LD | 4.1 km/s |
| 2058-04-21 18:54:00 | Earth | 0.1731 AU | 67.4 LD | 8.9 km/s |
| 2059-04-16 01:26:00 | Earth | 0.0219 AU | 8.5 LD | 4.7 km/s |
| 2060-05-05 06:33:00 | Earth | 0.0883 AU | 34.4 LD | 2.8 km/s |
| 2061-01-16 04:23:00 | Earth | 0.1436 AU | 55.9 LD | 3.9 km/s |
| 2061-07-04 09:03:00 | Earth | 0.1304 AU | 50.7 LD | 3.1 km/s |
| 2063-09-22 11:20:00 | Earth | 0.057 AU | 22.2 LD | 5.3 km/s |
| 2064-09-13 21:54:00 | Earth | 0.1753 AU | 68.2 LD | 8.8 km/s |
| 2105-04-23 04:49:00 | Earth | 0.187 AU | 72.8 LD | 9.3 km/s |
| 2106-04-17 23:05:00 | Earth | 0.0613 AU | 23.9 LD | 5.7 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