Herschel-Rigollet
35P/Herschel-Rigollet
Where is it now
- Distance from Sun
- 56.39 AU
- True anomaly
- 181.3°
- 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
- 11h 50m 42s
- Declination
- -28° 27′ 42″
- Constellation
- Hydra
- Distance from Earth
- 57.26 AU
- Elongation from the Sun
- 30.26° — near the Sun — look low at dusk or dawn
Favours the southern hemisphere; low or below the horizon from far north.
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
- 28.844 AU
- Eccentricity
- 0.9741
- Inclination
- 64.21°
- Orbital period
- 155 years
- Perihelion
- 0.748 AU
- Aphelion
- 56.939 AU
- Longitude of ascending node
- 355.98°
- Argument of periapsis
- 29.3°
- Epoch · J2000
- 2429480.5
- Orbit class · HTC
- Halley-type comet
- Tisserand (Jupiter)
- 0.644
Orbit quality
- Observations used
- 75
- First observed
- 1788-??-??
- Last observed
- 1940-??-??
Visual & observation
- Absolute magnitude (H)
- 8.3
- Total magnitude M₁ · K₁ 10
- 8.3
Discovery & classification
Also known as 35P
Sources
- orbital elements: JPL SBDB