2013 HO is an asteroid in the Apollo orbit class. Its orbit takes it from 0.99 AU to 1.06 AU from the Sun; one orbit takes 378.6 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.038 AU
- True anomaly
- 118.19°
- Distance from Earth
- 2.021 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
- 15h 01m 13s
- Declination
- -14° 31′ 57″
- Constellation
- Libra
- Distance from Earth
- 2.02 AU
- Elongation from the Sun
- 5.63° — too close to the Sun to observe
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
- 1.024 AU
- Eccentricity
- 0.0313
- Inclination
- 9.81°
- Orbital period
- 378.6 days
- Perihelion
- 0.992 AU
- Aphelion
- 1.056 AU
- Longitude of ascending node
- 202.46°
- Argument of periapsis
- 270.98°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 7.9 LD
- 0.0203 AU
- Tisserand (Jupiter)
- 5.955
Orbit quality
Orbit poorly determined (uncertainty code 6).
- Observations used
- 58
- Data arc
- 15 days
- First observed
- 16 April 2013
- Last observed
- 1 May 2013
- Residual RMS
- 0.46 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 25.9
Discovery & classification
Close approaches 31 on record
Top-down view of the ecliptic, Earth at the centre, for the 2039-10-24 06:15 UTC close approach of 2013 HO. Catalogue miss distance 140.2 LD · 5.39 × 10⁷ km. The curve is the geocentric path from 2039-10-21 to 2039-10-27, 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 |
|---|---|---|---|---|
| 2039-10-24 06:15:00 | Earth | 0.3602 AU | 140.2 LD | 12 km/s |
| 2040-10-21 03:53:00 | Earth | 0.1399 AU | 54.4 LD | 6.7 km/s |
| 2041-04-14 17:16:00 | Earth | 0.0955 AU | 37.2 LD | 5.5 km/s |
| 2041-10-12 19:53:00 | Earth | 0.0775 AU | 30.2 LD | 5.3 km/s |
| 2042-04-10 02:04:00 | Earth | 0.1208 AU | 47.0 LD | 6.4 km/s |
| 2043-04-11 05:51:00 | Earth | 0.3446 AU | 134.1 LD | 11.6 km/s |
| 2067-10-22 23:44:00 | Earth | 0.4009 AU | 156.0 LD | 13.1 km/s |
| 2068-10-21 16:59:00 | Earth | 0.1771 AU | 68.9 LD | 7.5 km/s |
| 2069-10-14 10:30:00 | Earth | 0.0487 AU | 19.0 LD | 5.1 km/s |
| 2070-04-09 12:23:00 | Earth | 0.0923 AU | 35.9 LD | 5.9 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