2023 KJ2 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.65 AU to 1.38 AU from the Sun; one orbit takes 372.4 days. Orbit from the JPL solution of 25 May 2023.
Where is it now
- Distance from Sun
- 1.342 AU
- True anomaly
- 197.33°
- Distance from Earth
- 1.515 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 54m 14s
- Declination
- -33° 15′ 01″
- Constellation
- Sagittarius
- Distance from Earth
- 1.52 AU
- Elongation from the Sun
- 60.38° — well clear of the Sun
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
- 1.013 AU
- Eccentricity
- 0.3579
- Inclination
- 11.82°
- Orbital period
- 372.4 days
- Perihelion
- 0.65 AU
- Aphelion
- 1.376 AU
- Longitude of ascending node
- 59.35°
- Argument of periapsis
- 65.57°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 4.6 LD
- 0.0118 AU
- Tisserand (Jupiter)
- 5.943
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 42
- Data arc
- 3 days
- First observed
- 21 May 2023
- Last observed
- 24 May 2023
- Residual RMS
- 0.26 ″
- Solution · Otto Matic
- 25 May 2023
Visual & observation
- Absolute magnitude (H)
- 25.66
Discovery & classification
Close approaches 86 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-06-05 16:20 UTC close approach of 2023 KJ2. Catalogue miss distance 177.8 LD · 6.83 × 10⁷ km. The curve is the geocentric path from 2027-06-02 to 2027-06-08, 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 |
|---|---|---|---|---|
| 2027-06-05 16:20:00 | Earth | 0.4569 AU | 177.8 LD | 24.9 km/s |
| 2037-07-13 19:30:00 | Venus | 0.0865 AU | 33.7 LD | 10.6 km/s |
| 2046-07-21 08:25:00 | Venus | 0.0716 AU | 27.9 LD | 13.8 km/s |
| 2059-09-23 14:49:00 | Earth | 0.4813 AU | 187.3 LD | 25.1 km/s |
| 2060-09-28 22:59:00 | Earth | 0.37 AU | 144.0 LD | 21.6 km/s |
| 2061-10-05 12:48:00 | Earth | 0.2617 AU | 101.9 LD | 18.2 km/s |
| 2062-10-12 16:57:00 | Earth | 0.1669 AU | 65.0 LD | 14.8 km/s |
| 2063-10-21 07:49:00 | Earth | 0.1238 AU | 48.2 LD | 11.8 km/s |
| 2064-11-03 04:42:00 | Earth | 0.1708 AU | 66.5 LD | 9.7 km/s |
| 2065-11-25 10:09:00 | Earth | 0.2445 AU | 95.2 LD | 10.2 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