2025 SK is an asteroid in the Apollo orbit class. Its orbit takes it from 0.88 AU to 1.17 AU from the Sun; one orbit takes 380.4 days. Orbit from the JPL solution of 7 August 2026.
Where is it now
- Distance from Sun
- 1.142 AU
- True anomaly
- 214.1°
- Distance from Earth
- 0.494 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
- 21h 40m 36s
- Declination
- -33° 15′ 39″
- Constellation
- Piscis Austrinus
- Distance from Earth
- 0.5 AU
- Elongation from the Sun
- 94.02° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
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
- 1.027 AU
- Eccentricity
- 0.1433
- Inclination
- 25.43°
- Orbital period
- 380.4 days
- Perihelion
- 0.88 AU
- Aphelion
- 1.175 AU
- Longitude of ascending node
- 180.43°
- Argument of periapsis
- 343.95°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 43.3 LD
- 0.1113 AU
- Tisserand (Jupiter)
- 5.859
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 50
- Data arc
- 672 days
- First observed
- 11 September 2024
- Last observed
- 15 July 2026
- Residual RMS
- 0.53 ″
- Solution · Otto Matic
- 7 August 2026
Visual & observation
- Absolute magnitude (H)
- 23.27
Discovery & classification
Close approaches 32 on record
Top-down view of the ecliptic, Earth at the centre, for the 2050-09-24 16:18 UTC close approach of 2025 SK. Catalogue miss distance 63.7 LD · 2.45 × 10⁷ km. The curve is the geocentric path from 2050-09-21 to 2050-09-27, 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. 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 |
|---|---|---|---|---|
| 2050-09-24 16:18:00 | Earth | 0.1637 AU | 63.7 LD | 12.8 km/s |
| 2051-03-25 04:34:00 | Earth | 0.1157 AU | 45.0 LD | 14.6 km/s |
| 2075-09-25 04:26:00 | Earth | 0.1635 AU | 63.6 LD | 12.8 km/s |
| 2076-03-24 04:05:00 | Earth | 0.1148 AU | 44.7 LD | 14.6 km/s |
| 2100-09-25 13:03:00 | Earth | 0.1635 AU | 63.6 LD | 12.8 km/s |
| 2101-03-25 10:52:00 | Earth | 0.1147 AU | 44.6 LD | 14.6 km/s |
| 2125-09-25 14:20:00 | Earth | 0.1639 AU | 63.8 LD | 12.8 km/s |
| 2126-03-26 08:50:00 | Earth | 0.1163 AU | 45.3 LD | 14.6 km/s |
| 2150-09-25 09:01:00 | Earth | 0.165 AU | 64.2 LD | 12.8 km/s |
| 2151-03-27 19:32:00 | Earth | 0.1202 AU | 46.8 LD | 14.6 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