2026 SY7 is an asteroid in the Aten orbit class. Its orbit takes it from 0.77 AU to 1.22 AU from the Sun; one orbit takes 361.4 days. Orbit from the JPL solution of 26 September 2026.
Where is it now
- Distance from Sun
- 1.193 AU
- True anomaly
- 157.7°
- Distance from Earth
- 0.339 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
- 23h 09m 43s
- Declination
- -20° 15′ 46″
- Constellation
- Aquarius
- Distance from Earth
- 0.34 AU
- Elongation from the Sun
- 118.31° — 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
- 0.993 AU
- Eccentricity
- 0.2285
- Inclination
- 9.89°
- Orbital period
- 361.4 days
- Perihelion
- 0.766 AU
- Aphelion
- 1.22 AU
- Longitude of ascending node
- 183.9°
- Argument of periapsis
- 45.13°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 26.6 LD
- 0.0684 AU
- Tisserand (Jupiter)
- 6.078
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 16
- Data arc
- 11 days
- First observed
- 11 September 2026
- Last observed
- 22 September 2026
- Residual RMS
- 0.31 ″
- Solution · Otto Matic
- 26 September 2026
Visual & observation
- Absolute magnitude (H)
- 25
Discovery & classification
Close approaches 17 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-09-12 12:31 UTC close approach of 2026 SY7. Catalogue miss distance 38.2 LD · 1.47 × 10⁷ km. The curve is the geocentric path from 2027-09-09 to 2027-09-15, 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 |
|---|---|---|---|---|
| 2027-09-12 12:31:00 | Earth | 0.0981 AU | 38.2 LD | 7.2 km/s |
| 2028-09-20 06:18:00 | Earth | 0.1416 AU | 55.1 LD | 6.8 km/s |
| 2029-10-01 01:48:00 | Earth | 0.1817 AU | 70.7 LD | 6.9 km/s |
| 2041-02-04 11:40:00 | Earth | 0.1457 AU | 56.7 LD | 10.2 km/s |
| 2042-01-30 04:23:00 | Earth | 0.1918 AU | 74.6 LD | 12.2 km/s |
| 2046-03-07 00:28:00 | Venus | 0.0824 AU | 32.1 LD | 9.2 km/s |
| 2051-02-09 07:26:00 | Venus | 0.0772 AU | 30.0 LD | 7.4 km/s |
| 2078-10-15 09:20:00 | Venus | 0.0579 AU | 22.5 LD | 8.1 km/s |
| 2083-09-19 08:28:00 | Venus | 0.144 AU | 56.0 LD | 7.9 km/s |
| 2111-05-26 05:13:00 | Venus | 0.0606 AU | 23.6 LD | 7.7 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