2023 RX1 is an asteroid in the Aten orbit class. Its orbit takes it from 0.96 AU to 1.03 AU from the Sun; one orbit takes 361.6 days. Orbit from the JPL solution of 17 September 2023.
Where is it now
- Distance from Sun
- 1.016 AU
- True anomaly
- 228.87°
- Distance from Earth
- 0.068 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
- 07h 13m 01s
- Declination
- -02° 14′ 32″
- Constellation
- Monoceros
- Distance from Earth
- 0.07 AU
- Elongation from the Sun
- 109.09° — well clear of the Sun
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
- 0.993 AU
- Eccentricity
- 0.0366
- Inclination
- 1.69°
- Orbital period
- 361.6 days
- Perihelion
- 0.957 AU
- Aphelion
- 1.03 AU
- Longitude of ascending node
- 155.36°
- Argument of periapsis
- 19.4°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 4.7 LD
- 0.012 AU
- Tisserand (Jupiter)
- 6.111
Orbit quality
Orbit reasonably well determined (uncertainty code 4).
- Observations used
- 31
- Data arc
- 3 days
- First observed
- 6 September 2023
- Last observed
- 9 September 2023
- Residual RMS
- 0.53 ″
- Solution · Otto Matic
- 17 September 2023
Visual & observation
- Absolute magnitude (H)
- 30.25
Discovery & classification
Close approaches 38 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-01-03 11:42 UTC close approach of 2023 RX1. Catalogue miss distance 20.5 LD · 7.89 × 10⁶ km. The curve is the geocentric path from 2026-12-31 to 2027-01-06, 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 south 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 |
|---|---|---|---|---|
| 2027-01-03 11:42:00 | Earth | 0.0527 AU | 20.5 LD | 2.6 km/s |
| 2027-12-26 08:37:00 | Earth | 0.152 AU | 59.2 LD | 5.6 km/s |
| 2028-12-19 08:24:00 | Earth | 0.2619 AU | 101.9 LD | 9 km/s |
| 2029-12-13 12:29:00 | Earth | 0.3749 AU | 145.9 LD | 12.4 km/s |
| 2030-12-07 19:18:00 | Earth | 0.4883 AU | 190.0 LD | 15.8 km/s |
| 2074-08-22 18:59:00 | Earth | 0.4962 AU | 193.1 LD | 15.7 km/s |
| 2075-08-19 10:48:00 | Earth | 0.3858 AU | 150.1 LD | 12.5 km/s |
| 2076-08-15 00:00:00 | Earth | 0.2755 AU | 107.2 LD | 9.2 km/s |
| 2077-08-11 04:42:00 | Earth | 0.1674 AU | 65.1 LD | 6 km/s |
| 2078-08-08 13:42:00 | Earth | 0.0661 AU | 25.7 LD | 3.1 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