Where is it now
- Distance from Sun
- 1.04 AU
- True anomaly
- 154.92°
- Distance from Earth
- 1.077 AU
- As of
- 16 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
- 09h 50m 06s
- Declination
- +17° 39′ 32″
- Constellation
- Leo
- Distance from Earth
- 1.08 AU
- Elongation from the Sun
- 60.21° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
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
- 0.784 AU
- Eccentricity
- 0.4142
- Inclination
- 16.85°
- Orbital period
- 253.7 days
- Perihelion
- 0.459 AU
- Aphelion
- 1.109 AU
- Longitude of ascending node
- 282.23°
- Argument of periapsis
- 9.29°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 37.4 LD
- 0.0961 AU
- Tisserand (Jupiter)
- 7.311
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 655
- Data arc
- 18.08 years
- First observed
- 10 December 2005
- Last observed
- 10 January 2024
- Residual RMS
- 0.42 ″
- Solution · Otto Matic
- 25 September 2025
Visual & observation
- Absolute magnitude (H)
- 20.55
Discovery & classification
- Discovered by
- CSS
- Discovery date
- 10 December 2005
- Discovery site
- Catalina
Also known as 2005 XV77
Close approaches 148 on record
Top-down view of the ecliptic, Earth at the centre, for the 2030-12-24 11:03 UTC close approach of 417210. Catalogue miss distance 38.4 LD · 1.48 × 10⁷ km. The curve is the geocentric path from 2030-12-21 to 2030-12-27, 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. 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 |
|---|---|---|---|---|
| 2027-03-20 14:41:00 | Mercury | 0.0785 AU | 30.5 LD | 24.9 km/s |
| 2027-03-20 14:41:00 | Merc | 0.0785 AU | 30.5 LD | 24.9 km/s |
| 2030-12-24 11:03:00 | Earth | 0.0987 AU | 38.4 LD | 11.8 km/s |
| 2032-10-12 12:11:00 | Merc | 0.0506 AU | 19.7 LD | 20.8 km/s |
| 2032-10-12 12:11:00 | Mercury | 0.0506 AU | 19.7 LD | 20.8 km/s |
| 2038-01-24 17:31:00 | Earth | 0.1597 AU | 62.1 LD | 11.7 km/s |
| 2039-01-09 15:41:00 | Merc | 0.0397 AU | 15.4 LD | 22.5 km/s |
| 2039-01-09 15:41:00 | Mercury | 0.0397 AU | 15.4 LD | 22.5 km/s |
| 2039-12-16 17:29:00 | Earth | 0.1364 AU | 53.1 LD | 14.4 km/s |
| 2044-08-04 07:17:00 | Mercury | 0.0926 AU | 36.0 LD | 22.3 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