2023 HU3 is an asteroid in the Aten orbit class. Its orbit takes it from 0.57 AU to 1.42 AU from the Sun; one orbit takes 362.5 days. Orbit from the JPL solution of 1 May 2024.
Where is it now
- Distance from Sun
- 1.16 AU
- True anomaly
- 225.63°
- Distance from Earth
- 1.409 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
- 18h 04m 32s
- Declination
- +01° 01′ 12″
- Constellation
- Ophiuchus
- Distance from Earth
- 1.41 AU
- Elongation from the Sun
- 54.23° — 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
- 0.995 AU
- Eccentricity
- 0.4293
- Inclination
- 31.91°
- Orbital period
- 362.5 days
- Perihelion
- 0.568 AU
- Aphelion
- 1.422 AU
- Longitude of ascending node
- 210.81°
- Argument of periapsis
- 241.09°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 5.7 LD
- 0.0147 AU
- Tisserand (Jupiter)
- 5.9
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 63
- Data arc
- 734 days
- First observed
- 27 April 2022
- Last observed
- 30 April 2024
- Residual RMS
- 0.56 ″
- Solution · Otto Matic
- 1 May 2024
Visual & observation
- Absolute magnitude (H)
- 25.01
Discovery & classification
Close approaches 142 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-04-17 10:16 UTC close approach of 2023 HU3. Catalogue miss distance 64.3 LD · 2.47 × 10⁷ km. The curve is the geocentric path from 2027-04-14 to 2027-04-20, 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. At closest approach the object is north of the ecliptic. 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 |
|---|---|---|---|---|
| 2027-04-17 10:16:00 | Earth | 0.1651 AU | 64.3 LD | 17.2 km/s |
| 2028-04-16 12:25:00 | Earth | 0.2091 AU | 81.4 LD | 16.7 km/s |
| 2029-04-17 00:42:00 | Earth | 0.2535 AU | 98.6 LD | 16.3 km/s |
| 2030-04-18 00:04:00 | Earth | 0.2975 AU | 115.8 LD | 16 km/s |
| 2031-04-19 15:13:00 | Earth | 0.3407 AU | 132.6 LD | 15.9 km/s |
| 2032-04-20 16:39:00 | Earth | 0.3824 AU | 148.8 LD | 15.8 km/s |
| 2032-12-19 22:53:00 | Venus | 0.0649 AU | 25.3 LD | 25.2 km/s |
| 2033-04-23 09:25:00 | Earth | 0.4226 AU | 164.5 LD | 15.7 km/s |
| 2034-04-26 10:31:00 | Earth | 0.461 AU | 179.4 LD | 15.7 km/s |
| 2035-04-29 22:37:00 | Earth | 0.4976 AU | 193.6 LD | 15.7 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