2023 TF1 is an asteroid in the Aten orbit class. Its orbit takes it from 0.77 AU to 1.21 AU from the Sun; one orbit takes 361.3 days. Orbit from the JPL solution of 2 October 2024.
Where is it now
- Distance from Sun
- 1.15 AU
- True anomaly
- 143.83°
- Distance from Earth
- 0.245 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
- 00h 18m 50s
- Declination
- +65° 23′ 17″
- Constellation
- Cassiopeia
- Distance from Earth
- 0.25 AU
- Elongation from the Sun
- 124.83° — well clear of the Sun
Favours the northern hemisphere; low or below the horizon from far south.
From your location
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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
- 0.2225
- Inclination
- 19.48°
- Orbital period
- 361.3 days
- Perihelion
- 0.772 AU
- Aphelion
- 1.214 AU
- Longitude of ascending node
- 10.83°
- Argument of periapsis
- 247.67°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 9.4 LD
- 0.024 AU
- Tisserand (Jupiter)
- 6.044
Orbit quality
Orbit very well determined (uncertainty code 1).
- Observations used
- 72
- Data arc
- 362 days
- First observed
- 5 October 2023
- Last observed
- 1 October 2024
- Residual RMS
- 0.43 ″
- Solution · Otto Matic
- 2 October 2024
Visual & observation
- Absolute magnitude (H)
- 25.13
Discovery & classification
Close approaches 107 on record
Top-down view of the ecliptic, Earth at the centre, for the 2027-10-08 18:59 UTC close approach of 2023 TF1. Catalogue miss distance 94.3 LD · 3.63 × 10⁷ km. The curve is the geocentric path from 2027-10-05 to 2027-10-11, 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 |
|---|---|---|---|---|
| 2026-10-03 20:16:00 | Earth | 0.1814 AU | 70.6 LD | 10.1 km/s |
| 2027-10-08 18:59:00 | Earth | 0.2424 AU | 94.3 LD | 10 km/s |
| 2028-10-16 07:05:00 | Earth | 0.2994 AU | 116.5 LD | 10 km/s |
| 2029-06-22 00:19:00 | Earth | 0.3823 AU | 148.8 LD | 8.7 km/s |
| 2029-10-27 15:49:00 | Earth | 0.3492 AU | 135.9 LD | 9.9 km/s |
| 2030-06-03 05:49:00 | Earth | 0.3672 AU | 142.9 LD | 10.2 km/s |
| 2030-11-11 01:08:00 | Earth | 0.3896 AU | 151.6 LD | 9.4 km/s |
| 2031-05-18 22:42:00 | Earth | 0.3385 AU | 131.7 LD | 11.1 km/s |
| 2031-11-30 16:29:00 | Earth | 0.4178 AU | 162.6 LD | 8.2 km/s |
| 2032-05-04 13:22:00 | Earth | 0.3001 AU | 116.8 LD | 11.4 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