2024 SJ3 is an asteroid in the Aten orbit class. Its orbit takes it from 0.64 AU to 1.32 AU from the Sun; one orbit takes 354.7 days. Orbit from the JPL solution of 30 October 2026.
Where is it now
- Distance from Sun
- 1.309 AU
- True anomaly
- 167.9°
- Distance from Earth
- 0.335 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 58m 53s
- Declination
- -05° 40′ 06″
- Constellation
- Eridanus
- Distance from Earth
- 0.34 AU
- Elongation from the Sun
- 158.33° — well clear of the Sun
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
- 0.981 AU
- Eccentricity
- 0.3509
- Inclination
- 5.51°
- Orbital period
- 354.7 days
- Perihelion
- 0.637 AU
- Aphelion
- 1.325 AU
- Longitude of ascending node
- 140.56°
- Argument of periapsis
- 92.06°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 11.6 LD
- 0.0298 AU
- Tisserand (Jupiter)
- 6.115
Orbit quality
Orbit reasonably well determined (uncertainty code 3).
- Observations used
- 45
- Data arc
- 764 days
- First observed
- 26 September 2024
- Last observed
- 30 October 2026
- Residual RMS
- 0.41 ″
- Solution · Otto Matic
- 30 October 2026
Visual & observation
- Absolute magnitude (H)
- 23.18
Discovery & classification
Close approaches 41 on record
Top-down view of the ecliptic, Earth at the centre, for the 2031-01-24 19:58 UTC close approach of 2024 SJ3. Catalogue miss distance 46.7 LD · 1.79 × 10⁷ km. The curve is the geocentric path from 2031-01-21 to 2031-01-27, 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 |
|---|---|---|---|---|
| 2028-04-11 08:50:00 | Venus | 0.0571 AU | 22.2 LD | 13.2 km/s |
| 2031-01-24 19:58:00 | Earth | 0.1199 AU | 46.7 LD | 8 km/s |
| 2032-01-21 07:02:00 | Earth | 0.0727 AU | 28.3 LD | 13.2 km/s |
| 2035-02-16 07:39:00 | Venus | 0.0929 AU | 36.2 LD | 8.5 km/s |
| 2042-01-07 19:04:00 | Venus | 0.0603 AU | 23.5 LD | 9.5 km/s |
| 2053-07-05 23:36:00 | Venus | 0.0055 AU | 2.1 LD | 10.8 km/s |
| 2055-09-14 03:40:00 | Earth | 0.1111 AU | 43.2 LD | 14.1 km/s |
| 2056-09-07 21:38:00 | Earth | 0.1344 AU | 52.3 LD | 7.6 km/s |
| 2062-01-22 12:43:00 | Earth | 0.0355 AU | 13.8 LD | 11.7 km/s |
| 2062-05-01 07:05:00 | Venus | 0.0584 AU | 22.7 LD | 10.7 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