2023 KK4 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.49 AU to 1.55 AU from the Sun; one orbit takes 376.8 days. Orbit from the JPL solution of 30 May 2023.
Where is it now
- Distance from Sun
- 1.547 AU
- True anomaly
- 179.77°
- Distance from Earth
- 1.94 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 10m 56s
- Declination
- -10° 33′ 44″
- Constellation
- Serpens
- Distance from Earth
- 1.94 AU
- Elongation from the Sun
- 52.05° — 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
- 1.021 AU
- Eccentricity
- 0.5153
- Inclination
- 18.87°
- Orbital period
- 376.8 days
- Perihelion
- 0.495 AU
- Aphelion
- 1.547 AU
- Longitude of ascending node
- 245.53°
- Argument of periapsis
- 239.87°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 0.3 LD
- 0.0007 AU
- Tisserand (Jupiter)
- 5.815
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 32
- Data arc
- 2 days
- First observed
- 28 May 2023
- Last observed
- 30 May 2023
- Residual RMS
- 0.28 ″
- Solution · Otto Matic
- 30 May 2023
Visual & observation
- Absolute magnitude (H)
- 27.56
Discovery & classification
Close approaches 40 on record
Top-down view of the ecliptic, Earth at the centre, for the 2075-09-18 22:25 UTC close approach of 2023 KK4. Catalogue miss distance 186.9 LD · 7.18 × 10⁷ km. The curve is the geocentric path from 2075-09-15 to 2075-09-21, 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 north 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 |
|---|---|---|---|---|
| 2073-11-22 00:19:00 | Venus | 0.144 AU | 56.0 LD | 20.3 km/s |
| 2075-09-18 22:25:00 | Earth | 0.4801 AU | 186.9 LD | 29.2 km/s |
| 2076-09-28 18:43:00 | Earth | 0.3384 AU | 131.7 LD | 23.9 km/s |
| 2077-10-11 11:52:00 | Earth | 0.2542 AU | 98.9 LD | 19 km/s |
| 2079-11-23 21:49:00 | Earth | 0.3696 AU | 143.8 LD | 17.3 km/s |
| 2080-12-15 18:06:00 | Earth | 0.444 AU | 172.8 LD | 20.3 km/s |
| 2082-01-05 06:50:00 | Earth | 0.4965 AU | 193.2 LD | 22.4 km/s |
| 2085-06-19 11:05:00 | Earth | 0.4927 AU | 191.8 LD | 12.8 km/s |
| 2086-06-03 18:15:00 | Earth | 0.3683 AU | 143.3 LD | 12.2 km/s |
| 2087-02-15 06:50:00 | Venus | 0.1265 AU | 49.2 LD | 25.1 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