2001 FR85 is an asteroid in the Aten orbit class. Its orbit takes it from 0.96 AU to 1.01 AU from the Sun; one orbit takes 355.9 days. Orbit from the JPL solution of 14 April 2021.
Where is it now
- Distance from Sun
- 1.003 AU
- True anomaly
- 221.34°
- Distance from Earth
- 1.745 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
- 16h 34m 39s
- Declination
- -18° 57′ 38″
- Constellation
- Ophiuchus
- Distance from Earth
- 1.74 AU
- Elongation from the Sun
- 29.16° — near the Sun — look low at dusk or dawn
Favours the southern hemisphere; low or below the horizon from far north.
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
- 0.983 AU
- Eccentricity
- 0.0279
- Inclination
- 5.25°
- Orbital period
- 355.9 days
- Perihelion
- 0.955 AU
- Aphelion
- 1.01 AU
- Longitude of ascending node
- 183.01°
- Argument of periapsis
- 233.78°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 0.7 LD
- 0.0019 AU
- Tisserand (Jupiter)
- 6.16
Orbit quality
Orbit reasonably well determined (uncertainty code 3).
- Observations used
- 40
- Data arc
- 7 days
- First observed
- 26 March 2001
- Last observed
- 2 April 2001
- Residual RMS
- 0.43 ″
- Solution · Otto Matic
- 14 April 2021
Visual & observation
- Absolute magnitude (H)
- 24.8
Discovery & classification
Close approaches 41 on record
Top-down view of the ecliptic, Earth at the centre, for the 2037-03-26 20:12 UTC close approach of 2001 FR85. Catalogue miss distance 136.9 LD · 5.26 × 10⁷ km. The curve is the geocentric path from 2037-03-23 to 2037-03-29, 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 |
|---|---|---|---|---|
| 2037-03-26 20:12:00 | Earth | 0.3517 AU | 136.9 LD | 11.2 km/s |
| 2038-03-21 05:27:00 | Earth | 0.1949 AU | 75.8 LD | 6.7 km/s |
| 2039-03-21 00:52:00 | Earth | 0.0451 AU | 17.5 LD | 3.2 km/s |
| 2039-09-28 13:35:00 | Earth | 0.0309 AU | 12.0 LD | 2.9 km/s |
| 2040-03-28 13:07:00 | Earth | 0.0582 AU | 22.7 LD | 3.2 km/s |
| 2040-08-14 08:24:00 | Earth | 0.0965 AU | 37.6 LD | 3.5 km/s |
| 2041-04-12 18:15:00 | Earth | 0.1904 AU | 74.1 LD | 6.2 km/s |
| 2042-04-27 09:03:00 | Earth | 0.3306 AU | 128.7 LD | 10.1 km/s |
| 2043-05-02 09:22:00 | Earth | 0.4725 AU | 183.9 LD | 14.3 km/s |
| 2078-03-22 12:44:00 | Earth | 0.3753 AU | 146.1 LD | 11.9 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