2004 JO1 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.54 AU to 1.51 AU from the Sun; one orbit takes 377.6 days. Orbit from the JPL solution of 14 April 2021.
Where is it now
- Distance from Sun
- 1.503 AU
- True anomaly
- 185.1°
- Distance from Earth
- 2.329 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
- 13h 28m 53s
- Declination
- +04° 25′ 48″
- Constellation
- Virgo
- Distance from Earth
- 2.33 AU
- Elongation from the Sun
- 26.21° — near the Sun — look low at dusk or dawn
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
- 1.022 AU
- Eccentricity
- 0.475
- Inclination
- 21.58°
- Orbital period
- 377.6 days
- Perihelion
- 0.537 AU
- Aphelion
- 1.508 AU
- Longitude of ascending node
- 69.83°
- Argument of periapsis
- 286.23°
- Epoch · J2000
- 2453143.5
- Orbit class · APO
- Apollo
- Earth MOID · 22.8 LD
- 0.0586 AU
- Tisserand (Jupiter)
- 5.815
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 8).
- Observations used
- 126
- Data arc
- 19 days
- First observed
- 11 May 2004
- Last observed
- 30 May 2004
- Residual RMS
- 0.51 ″
- Solution · Otto Matic
- 14 April 2021
Visual & observation
- Absolute magnitude (H)
- 20.9
Discovery & classification
Close approaches 60 on record
Top-down view of the ecliptic, Earth at the centre, for the 2032-05-10 01:36 UTC close approach of 2004 JO1. Catalogue miss distance 121.7 LD · 4.68 × 10⁷ km. The curve is the geocentric path from 2032-05-07 to 2032-05-13, 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 |
|---|---|---|---|---|
| 2027-03-23 13:09:00 | Venus | 0.1479 AU | 57.6 LD | 14.9 km/s |
| 2032-05-10 01:36:00 | Earth | 0.3127 AU | 121.7 LD | 26.6 km/s |
| 2033-05-19 12:40:00 | Earth | 0.1185 AU | 46.1 LD | 21 km/s |
| 2034-05-28 14:29:00 | Earth | 0.1175 AU | 45.7 LD | 15.9 km/s |
| 2035-06-03 15:36:00 | Earth | 0.3157 AU | 122.9 LD | 12.1 km/s |
| 2036-09-23 13:56:00 | Venus | 0.0319 AU | 12.4 LD | 20.5 km/s |
| 2040-11-10 11:59:00 | Earth | 0.3965 AU | 154.3 LD | 17.3 km/s |
| 2041-12-08 10:36:00 | Earth | 0.2673 AU | 104.0 LD | 16 km/s |
| 2042-12-28 02:32:00 | Earth | 0.1937 AU | 75.4 LD | 19.2 km/s |
| 2044-01-10 17:40:00 | Earth | 0.2987 AU | 116.3 LD | 24.6 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