Tuttle
8P/Tuttle
Where is it now
- Distance from Sun
- 9.893 AU
- True anomaly
- 171.62°
- As of
- 17 September 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
- 18h 21m 54s
- Declination
- -07° 23′ 41″
- Constellation
- Scutum
- Distance from Earth
- 9.68 AU
- Elongation from the Sun
- 99.68° — well clear of the Sun
Visible from both hemispheres.
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
- 5.7 AU
- Eccentricity
- 0.8198
- Inclination
- 54.98°
- Orbital period
- 13.61 years
- Perihelion
- 1.027 AU
- Aphelion
- 10.373 AU
- Longitude of ascending node
- 270.34°
- Argument of periapsis
- 207.51°
- Epoch · J2000
- 2454701.5
- Orbit class · JFC
- Jupiter-family comet (2 < T_J < 3)
- Earth MOID · 37.1 LD
- 0.0953 AU
- Tisserand (Jupiter)
- 1.601
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 1,768
- Data arc
- 55.2 years
- First observed
- 7 January 1967
- Last observed
- 20 March 2022
- Residual RMS
- 0.69 ″
- Solution · Davide Farnocchia
- 2 May 2022
Physical properties
- Mean radius
- 2.25 km
Visual & observation
- Absolute magnitude (H)
- 14.6
- Total magnitude M₁ · K₁ 4.5
- 14.6
Discovery & classification
Also known as 8P
Close approaches 4 on record
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2048-12-28 11:04:00 | Earth | 0.1752 AU | 68.2 LD | 32 km/s |
| 2130-12-25 21:07:00 | Earth | 0.0961 AU | 37.4 LD | 32.6 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- orbital elements: JPL SBDB