791587
Add to an observing list or journal →791587 (2020 AD3)
791587 is an asteroid in the Aten orbit class. Its orbit takes it from 0.4 AU to 1.57 AU from the Sun; one orbit takes 355.8 days. Discovered 7 January 2020 by CSS. Orbit from the JPL solution of 23 February 2026.
Where is it now
- Distance from Sun
- 1.006 AU
- True anomaly
- 128.33°
- Distance from Earth
- 1.15 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
- 11h 03m 45s
- Declination
- +05° 02′ 53″
- Constellation
- Leo
- Distance from Earth
- 1.15 AU
- Elongation from the Sun
- 55.72° — 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
- 0.983 AU
- Eccentricity
- 0.5948
- Inclination
- 2.64°
- Orbital period
- 355.8 days
- Perihelion
- 0.398 AU
- Aphelion
- 1.567 AU
- Longitude of ascending node
- 268.41°
- Argument of periapsis
- 73.84°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 6.1 LD
- 0.0157 AU
- Tisserand (Jupiter)
- 5.993
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 256
- Data arc
- 6.12 years
- First observed
- 7 January 2020
- Last observed
- 20 February 2026
- Residual RMS
- 0.51 ″
- Solution · Otto Matic
- 23 February 2026
Physical properties
- Rotation period
- 8.43 hours
Visual & observation
- Absolute magnitude (H)
- 21.61
Discovery & classification
- Discovered by
- CSS
- Discovery date
- 7 January 2020
- Discovery site
- Catalina
Also known as 2020 AD3
Close approaches 142 on record
Top-down view of the ecliptic, Earth at the centre, for the 2033-04-27 00:49 UTC close approach of 791587. Catalogue miss distance 67.9 LD · 2.61 × 10⁷ km. The curve is the geocentric path from 2033-04-24 to 2033-04-30, 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 |
|---|---|---|---|---|
| 2031-06-19 04:22:00 | Venus | 0.1093 AU | 42.5 LD | 27.4 km/s |
| 2033-04-27 00:49:00 | Earth | 0.1744 AU | 67.9 LD | 14.3 km/s |
| 2034-04-25 08:28:00 | Earth | 0.0432 AU | 16.8 LD | 18.3 km/s |
| 2035-04-20 12:57:00 | Earth | 0.1332 AU | 51.8 LD | 22.8 km/s |
| 2037-05-12 11:35:00 | Merc | 0.0611 AU | 23.8 LD | 18.6 km/s |
| 2037-05-12 11:35:00 | Mercury | 0.0611 AU | 23.8 LD | 18.6 km/s |
| 2038-05-15 19:05:00 | Mercury | 0.0638 AU | 24.8 LD | 15.2 km/s |
| 2038-05-15 19:05:00 | Merc | 0.0638 AU | 24.8 LD | 15.2 km/s |
| 2043-02-27 07:50:00 | Venus | 0.067 AU | 26.1 LD | 25.3 km/s |
| 2054-11-06 19:14:00 | Venus | 0.0426 AU | 16.6 LD | 23.9 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