2021 KH2 is an asteroid in the Apollo orbit class. Its orbit takes it from 1.01 AU to 1.05 AU from the Sun; one orbit takes 380.7 days. Orbit from the JPL solution of 22 March 2022.
Where is it now
- Distance from Sun
- 1.009 AU
- True anomaly
- 24.21°
- Distance from Earth
- 1.218 AU
- As of
- 4 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 22m 54s
- Declination
- -13° 10′ 59″
- Constellation
- Scutum
- Distance from Earth
- 1.22 AU
- Elongation from the Sun
- 53.15° — 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
- 1.028 AU
- Eccentricity
- 0.0203
- Inclination
- 12.29°
- Orbital period
- 380.7 days
- Perihelion
- 1.007 AU
- Aphelion
- 1.049 AU
- Longitude of ascending node
- 240.88°
- Argument of periapsis
- 62.64°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 2.3 LD
- 0.0059 AU
- Tisserand (Jupiter)
- 5.93
Orbit quality
Orbit very well determined (uncertainty code 2).
- Observations used
- 86
- Data arc
- 189 days
- First observed
- 21 May 2021
- Last observed
- 26 November 2021
- Residual RMS
- 0.36 ″
- Solution · Otto Matic
- 22 March 2022
Visual & observation
- Absolute magnitude (H)
- 25.32
Discovery & classification
Close approaches 75 on record
Top-down view of the ecliptic, Earth at the centre, for the 2044-05-07 18:25 UTC close approach of 2021 KH2. Catalogue miss distance 168.8 LD · 6.49 × 10⁷ km. The curve is the geocentric path from 2044-05-04 to 2044-05-10, 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 |
|---|---|---|---|---|
| 2044-05-07 18:25:00 | Earth | 0.4338 AU | 168.8 LD | 15 km/s |
| 2045-05-16 14:35:00 | Earth | 0.1762 AU | 68.6 LD | 8.7 km/s |
| 2045-12-05 11:14:00 | Earth | 0.1629 AU | 63.4 LD | 7.1 km/s |
| 2046-05-25 06:14:00 | Earth | 0.0796 AU | 31.0 LD | 6.5 km/s |
| 2046-11-16 14:27:00 | Earth | 0.0973 AU | 37.9 LD | 7.1 km/s |
| 2047-06-02 20:25:00 | Earth | 0.3417 AU | 133.0 LD | 11.1 km/s |
| 2047-11-06 15:47:00 | Earth | 0.3412 AU | 132.8 LD | 12 km/s |
| 2068-05-06 21:41:00 | Earth | 0.4708 AU | 183.2 LD | 15.9 km/s |
| 2069-05-15 15:58:00 | Earth | 0.2069 AU | 80.5 LD | 9.4 km/s |
| 2069-12-08 22:08:00 | Earth | 0.1859 AU | 72.4 LD | 7.3 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