Where is it now
- Distance from Sun
- 2.162 AU
- True anomaly
- 221.58°
- Distance from Earth
- 1.194 AU
- As of
- 11 October 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
- 00h 02m 04s
- Declination
- -03° 01′ 09″
- Constellation
- Pisces
- Distance from Earth
- 1.19 AU
- Elongation from the Sun
- 159.97° — 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
- 2.22 AU
- Eccentricity
- 0.7625
- Inclination
- 4.96°
- Orbital period
- 3.31 years
- Perihelion
- 0.527 AU
- Aphelion
- 3.912 AU
- Longitude of ascending node
- 169.01°
- Argument of periapsis
- 337.64°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 29.7 LD
- 0.0763 AU
- Tisserand (Jupiter)
- 3.186
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 1,328
- Data arc
- 64.84 years
- First observed
- 22 October 1960
- Last observed
- 25 August 2025
- Residual RMS
- 0.38 ″
- Solution · Otto Matic
- 9 December 2025
Physical properties
- Mean radius
- 0.70 km
- Rotation period
- 2.03 days
Visual & observation
- Geometric albedo
- 0.21
- Absolute magnitude (H)
- 16.02
Discovery & classification
- Discovered by
- Shoemaker, C. S., Shoemaker, E. M.
- Discovery date
- 27 May 1984
- Discovery site
- Palomar
Also known as 6063 · 1984 KB
Close approaches 37 on record
Top-down view of the ecliptic, Earth at the centre, for the 2060-05-11 11:50 UTC close approach of Jason. Catalogue miss distance 76.2 LD · 2.93 × 10⁷ km. The curve is the geocentric path from 2060-05-08 to 2060-05-14, 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 |
|---|---|---|---|---|
| 2045-05-30 03:31:00 | Juptr | 1.1303 AU | 439.9 LD | 6.2 km/s |
| 2050-04-06 00:06:00 | Venus | 0.0889 AU | 34.6 LD | 25.2 km/s |
| 2060-05-11 11:50:00 | Earth | 0.1957 AU | 76.2 LD | 18 km/s |
| 2068-11-23 00:31:00 | Juptr | 1.7401 AU | 677.2 LD | 8.8 km/s |
| 2079-11-26 08:14:00 | Earth | 0.1988 AU | 77.4 LD | 17.9 km/s |
| 2081-04-09 11:37:00 | Juptr | 1.9412 AU | 755.4 LD | 10.1 km/s |
| 2086-07-23 17:34:00 | Venus | 0.0891 AU | 34.7 LD | 25 km/s |
| 2104-10-07 15:07:00 | Juptr | 1.1491 AU | 447.2 LD | 6.3 km/s |
| 2122-11-08 07:46:00 | Earth | 0.1967 AU | 76.5 LD | 28.3 km/s |
| 2126-05-29 01:01:00 | Earth | 0.1115 AU | 43.4 LD | 24.7 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB