164202
Add to an observing list or journal →164202 (2004 EW)
164202 is an asteroid in the Aten orbit class. Its orbit takes it from 0.71 AU to 1.26 AU from the Sun; one orbit takes 358.6 days. Discovered 13 March 2004 by CSS. Orbit from the JPL solution of 1 March 2023.
Where is it now
- Distance from Sun
- 1.134 AU
- True anomaly
- 134.88°
- Distance from Earth
- 1.955 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
- 12h 58m 17s
- Declination
- -06° 48′ 50″
- Constellation
- Virgo
- Distance from Earth
- 1.96 AU
- Elongation from the Sun
- 24.95° — 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.
Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.
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
- 0.988 AU
- Eccentricity
- 0.2789
- Inclination
- 4.67°
- Orbital period
- 358.6 days
- Perihelion
- 0.712 AU
- Aphelion
- 1.263 AU
- Longitude of ascending node
- 342.89°
- Argument of periapsis
- 56.22°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 9.2 LD
- 0.0236 AU
- Tisserand (Jupiter)
- 6.101
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 427
- Data arc
- 13.2 years
- First observed
- 13 March 2004
- Last observed
- 27 May 2017
- Residual RMS
- 0.51 ″
- Solution · Otto Matic
- 1 March 2023
Physical properties
- Rotation period
- 11.1 hours
Visual & observation
- Absolute magnitude (H)
- 20.91
Discovery & classification
- Discovered by
- CSS
- Discovery date
- 13 March 2004
- Discovery site
- Catalina
Also known as 2004 EW
Close approaches 171 on record
Top-down view of the ecliptic, Earth at the centre, for the 2057-03-02 20:18 UTC close approach of 164202. Catalogue miss distance 158.6 LD · 6.09 × 10⁷ km. The curve is the geocentric path from 2057-02-27 to 2057-03-05, 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 |
|---|---|---|---|---|
| 2052-02-20 09:40:00 | Venus | 0.1471 AU | 57.2 LD | 12.9 km/s |
| 2057-01-18 06:00:00 | Venus | 0.0883 AU | 34.4 LD | 9.5 km/s |
| 2057-03-02 20:18:00 | Earth | 0.4074 AU | 158.6 LD | 20.7 km/s |
| 2058-02-26 14:47:00 | Earth | 0.3043 AU | 118.4 LD | 17.6 km/s |
| 2059-02-22 13:58:00 | Earth | 0.2011 AU | 78.2 LD | 14.4 km/s |
| 2060-02-18 22:07:00 | Earth | 0.0992 AU | 38.6 LD | 11.3 km/s |
| 2061-02-15 10:22:00 | Earth | 0.0237 AU | 9.2 LD | 8.3 km/s |
| 2061-12-18 20:02:00 | Venus | 0.0727 AU | 28.3 LD | 8.2 km/s |
| 2062-02-19 02:24:00 | Earth | 0.1043 AU | 40.6 LD | 5.9 km/s |
| 2063-01-04 23:19:00 | Earth | 0.2053 AU | 79.9 LD | 5.5 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)
- orbital elements: JPL SBDB