53319
Add to an observing list or journal →53319 (1999 JM8)
Where is it now
- Distance from Sun
- 1.827 AU
- True anomaly
- 101°
- Distance from Earth
- 1.035 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
- 04h 32m 02s
- Declination
- -03° 24′ 54″
- Constellation
- Eridanus
- Distance from Earth
- 1.04 AU
- Elongation from the Sun
- 128.51° — 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
- 2.724 AU
- Eccentricity
- 0.6416
- Inclination
- 13.84°
- Orbital period
- 4.5 years
- Perihelion
- 0.976 AU
- Aphelion
- 4.472 AU
- Longitude of ascending node
- 133.62°
- Argument of periapsis
- 166.78°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 10.0 LD
- 0.0256 AU
- Tisserand (Jupiter)
- 2.988
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 1,730
- Data arc
- 27.5 years
- First observed
- 10 April 1999
- Last observed
- 8 October 2026
- Residual RMS
- 0.3 ″
- Solution · Otto Matic
- 9 October 2026
Physical properties
- Mean radius
- 3.50 km
- Rotation period
- 5.99 days
Visual & observation
- Absolute magnitude (H)
- 15.35
- Spectral type (SMASS)
- X:
Discovery & classification
- Discovered by
- LINEAR
- Discovery date
- 13 May 1999
- Discovery site
- Socorro
Also known as 1999 JM8 · 1990 HD1
Close approaches 19 on record
Top-down view of the ecliptic, Earth at the centre, for the 2137-08-01 12:41 UTC close approach of 53319. Catalogue miss distance 29.7 LD · 1.14 × 10⁷ km. The curve is the geocentric path from 2137-07-29 to 2137-08-04, 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 |
|---|---|---|---|---|
| 2038-02-27 18:27:00 | Juptr | 1.4685 AU | 571.5 LD | 8 km/s |
| 2073-10-19 00:03:00 | Juptr | 1.2518 AU | 487.2 LD | 7.2 km/s |
| 2109-05-10 00:32:00 | Juptr | 1.4787 AU | 575.5 LD | 8.1 km/s |
| 2121-07-07 01:47:00 | Juptr | 1.8601 AU | 723.9 LD | 8.2 km/s |
| 2137-08-01 12:41:00 | Earth | 0.0764 AU | 29.7 LD | 13.3 km/s |
| 2144-10-26 18:59:00 | Juptr | 1.9868 AU | 773.2 LD | 9.9 km/s |
| 2157-01-02 17:24:00 | Juptr | 1.3821 AU | 537.9 LD | 6.6 km/s |
| 2168-07-06 20:38:00 | Earth | 0.1389 AU | 54.0 LD | 13.6 km/s |
| 2192-08-01 17:07:00 | Juptr | 1.2734 AU | 495.6 LD | 6.3 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