2019 RH is an asteroid in the Apollo orbit class. Its orbit takes it from 0.45 AU to 1.61 AU from the Sun; one orbit takes 380.8 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.415 AU
- True anomaly
- 206.55°
- Distance from Earth
- 1.661 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
- 18h 42m 52s
- Declination
- -23° 50′ 24″
- Constellation
- Sagittarius
- Distance from Earth
- 1.66 AU
- Elongation from the Sun
- 57.68° — near the Sun — look low at dusk or dawn
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.
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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
- 1.028 AU
- Eccentricity
- 0.5623
- Inclination
- 3.23°
- Orbital period
- 380.8 days
- Perihelion
- 0.45 AU
- Aphelion
- 1.606 AU
- Longitude of ascending node
- 332.45°
- Argument of periapsis
- 136.9°
- Epoch · J2000
- 2458731.5
- Orbit class · APO
- Apollo
- Earth MOID · 5.5 LD
- 0.0141 AU
- Tisserand (Jupiter)
- 5.795
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 8).
- Observations used
- 29
- Data arc
- 4 days
- First observed
- 4 September 2019
- Last observed
- 8 September 2019
- Residual RMS
- 0.24 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 26
Discovery & classification
Close approaches 29 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-05-12 23:09 UTC close approach of 2019 RH. Catalogue miss distance 97.6 LD · 3.75 × 10⁷ km. The curve is the geocentric path from 2027-05-09 to 2027-05-15, 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 south 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 |
|---|---|---|---|---|
| 2027-05-12 23:09:00 | Earth | 0.2509 AU | 97.6 LD | 11.1 km/s |
| 2028-05-12 17:43:00 | Earth | 0.0567 AU | 22.1 LD | 17.4 km/s |
| 2029-05-23 12:56:00 | Earth | 0.2755 AU | 107.2 LD | 25.3 km/s |
| 2065-08-25 06:48:00 | Earth | 0.3767 AU | 146.6 LD | 28.7 km/s |
| 2065-11-16 03:21:00 | Venus | 0.1486 AU | 57.8 LD | 26.2 km/s |
| 2066-09-05 19:55:00 | Earth | 0.1167 AU | 45.4 LD | 20.6 km/s |
| 2067-09-13 06:52:00 | Earth | 0.1495 AU | 58.2 LD | 13 km/s |
| 2068-08-26 09:22:00 | Earth | 0.3753 AU | 146.1 LD | 11.5 km/s |
| 2068-11-04 13:56:00 | Earth | 0.4118 AU | 160.3 LD | 13.3 km/s |
| 2073-06-10 06:32:00 | Earth | 0.4812 AU | 187.3 LD | 12.5 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