2024 SY5 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.81 AU to 1.26 AU from the Sun; one orbit takes 383.3 days. Orbit from the JPL solution of 4 October 2024.
Where is it now
- Distance from Sun
- 1.031 AU
- True anomaly
- 257.67°
- Distance from Earth
- 0.646 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
- 19h 55m 16s
- Declination
- -21° 08′ 26″
- Constellation
- Sagittarius
- Distance from Earth
- 0.65 AU
- Elongation from the Sun
- 74.43° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
From your location
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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
- 1.033 AU
- Eccentricity
- 0.2185
- Inclination
- 3.29°
- Orbital period
- 383.3 days
- Perihelion
- 0.807 AU
- Aphelion
- 1.258 AU
- Longitude of ascending node
- 8.7°
- Argument of periapsis
- 97.79°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 1.2 LD
- 0.0032 AU
- Tisserand (Jupiter)
- 5.907
Orbit quality
Orbit poorly determined (uncertainty code 6).
- Observations used
- 26
- Data arc
- 5 days
- First observed
- 29 September 2024
- Last observed
- 4 October 2024
- Residual RMS
- 0.48 ″
- Solution · Otto Matic
- 4 October 2024
Visual & observation
- Absolute magnitude (H)
- 28.06
Discovery & classification
Close approaches 45 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-04-06 18:58 UTC close approach of 2024 SY5. Catalogue miss distance 23.0 LD · 8.85 × 10⁶ km. The curve is the geocentric path from 2027-04-03 to 2027-04-09, 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 |
|---|---|---|---|---|
| 2027-04-06 18:58:00 | Earth | 0.0592 AU | 23.0 LD | 4.7 km/s |
| 2028-04-22 05:59:00 | Earth | 0.243 AU | 94.6 LD | 13.4 km/s |
| 2031-03-26 21:09:00 | Venus | 0.1132 AU | 44.1 LD | 2.7 km/s |
| 2044-09-13 13:32:00 | Earth | 0.452 AU | 175.9 LD | 19.6 km/s |
| 2045-09-27 20:30:00 | Earth | 0.1532 AU | 59.6 LD | 10.8 km/s |
| 2047-07-16 09:50:00 | Earth | 0.2479 AU | 96.5 LD | 5.8 km/s |
| 2048-02-03 10:49:00 | Earth | 0.1705 AU | 66.3 LD | 5.9 km/s |
| 2048-05-24 21:59:00 | Earth | 0.1991 AU | 77.5 LD | 4.8 km/s |
| 2049-02-06 08:12:00 | Venus | 0.0944 AU | 36.7 LD | 2.6 km/s |
| 2049-04-14 00:12:00 | Earth | 0.0668 AU | 26.0 LD | 8.2 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