2019 HM is an asteroid in the Aten orbit class. Its orbit takes it from 0.98 AU to 1 AU from the Sun; one orbit takes 357.4 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 0.98 AU
- True anomaly
- 58.06°
- Distance from Earth
- 0.9 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 33m 02s
- Declination
- +02° 38′ 21″
- Constellation
- Sextans
- Distance from Earth
- 0.9 AU
- Elongation from the Sun
- 62.2° — well clear of the Sun
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
- 0.986 AU
- Eccentricity
- 0.0098
- Inclination
- 5.76°
- Orbital period
- 357.4 days
- Perihelion
- 0.976 AU
- Aphelion
- 0.995 AU
- Longitude of ascending node
- 201.51°
- Argument of periapsis
- 194.94°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 2.7 LD
- 0.007 AU
- Tisserand (Jupiter)
- 6.145
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 35
- Data arc
- 158 days
- First observed
- 22 April 2019
- Last observed
- 27 September 2019
- Residual RMS
- 0.47 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 25.9
Discovery & classification
Close approaches 67 on record
Top-down view of the ecliptic, Earth at the centre, for the 2062-12-06 05:03 UTC close approach of 2019 HM. Catalogue miss distance 156.2 LD · 6.01 × 10⁷ km. The curve is the geocentric path from 2062-12-03 to 2062-12-09, 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 |
|---|---|---|---|---|
| 2062-12-06 05:03:00 | Earth | 0.4015 AU | 156.2 LD | 12.7 km/s |
| 2063-11-24 10:51:00 | Earth | 0.2721 AU | 105.9 LD | 9 km/s |
| 2064-11-08 17:10:00 | Earth | 0.1466 AU | 57.0 LD | 5.6 km/s |
| 2065-04-23 01:19:00 | Earth | 0.1444 AU | 56.2 LD | 4.9 km/s |
| 2065-10-21 23:25:00 | Earth | 0.0351 AU | 13.7 LD | 3.3 km/s |
| 2066-04-11 05:57:00 | Earth | 0.0459 AU | 17.8 LD | 3.1 km/s |
| 2066-10-07 18:06:00 | Earth | 0.0445 AU | 17.3 LD | 3.1 km/s |
| 2067-04-09 01:38:00 | Earth | 0.0261 AU | 10.2 LD | 3.2 km/s |
| 2068-04-03 06:36:00 | Earth | 0.1587 AU | 61.8 LD | 6 km/s |
| 2069-03-30 05:17:00 | Earth | 0.2996 AU | 116.6 LD | 9.9 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