2023 SL5 is an asteroid in the Aten orbit class. Its orbit takes it from 0.57 AU to 1.4 AU from the Sun; one orbit takes 355.3 days. Orbit from the JPL solution of 25 September 2023.
Where is it now
- Distance from Sun
- 1.352 AU
- True anomaly
- 162.77°
- Distance from Earth
- 0.364 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
- 02h 39m 27s
- Declination
- +24° 48′ 33″
- Constellation
- Aries
- Distance from Earth
- 0.37 AU
- Elongation from the Sun
- 170.17° — near opposition — up most of the night
Favours the northern hemisphere; low or below the horizon from far south.
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
- 0.982 AU
- Eccentricity
- 0.4222
- Inclination
- 3.32°
- Orbital period
- 355.3 days
- Perihelion
- 0.567 AU
- Aphelion
- 1.396 AU
- Longitude of ascending node
- 356.39°
- Argument of periapsis
- 242.63°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 0.2 LD
- 0.0005 AU
- Tisserand (Jupiter)
- 6.086
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 14
- Data arc
- 3 days
- First observed
- 21 September 2023
- Last observed
- 24 September 2023
- Residual RMS
- 0.24 ″
- Solution · Otto Matic
- 25 September 2023
Visual & observation
- Absolute magnitude (H)
- 28.79
Discovery & classification
Listed by JPL impact monitoring; see the Sentry table for current probabilities.
Close approaches 67 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-06-16 21:25 UTC close approach of 2023 SL5. Catalogue miss distance 168.0 LD · 6.46 × 10⁷ km. The curve is the geocentric path from 2027-06-13 to 2027-06-19, 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 |
|---|---|---|---|---|
| 2026-10-27 16:06:00 | Earth | 0.3631 AU | 141.3 LD | 10.2 km/s |
| 2027-06-16 21:25:00 | Earth | 0.4318 AU | 168.0 LD | 16.4 km/s |
| 2027-11-10 23:59:00 | Earth | 0.4024 AU | 156.6 LD | 10.8 km/s |
| 2028-05-28 21:07:00 | Earth | 0.4461 AU | 173.6 LD | 17.6 km/s |
| 2028-11-23 07:18:00 | Earth | 0.4127 AU | 160.6 LD | 11 km/s |
| 2029-05-11 06:42:00 | Earth | 0.4424 AU | 172.2 LD | 17.5 km/s |
| 2029-12-06 19:25:00 | Earth | 0.3959 AU | 154.1 LD | 10.8 km/s |
| 2030-04-23 02:54:00 | Earth | 0.4204 AU | 163.6 LD | 16.2 km/s |
| 2030-12-21 17:12:00 | Earth | 0.349 AU | 135.8 LD | 10.1 km/s |
| 2031-04-02 19:59:00 | Earth | 0.3756 AU | 146.2 LD | 13.3 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