Where is it now
- Distance from Sun
- 32.758 AU
- True anomaly
- 168.1°
- Distance from Earth
- 33.198 AU
- As of
- 11 October 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
- 08h 53m 56s
- Declination
- -06° 02′ 05″
- Constellation
- Hydra
- Distance from Earth
- 33.19 AU
- Elongation from the Sun
- 63.72° — 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
- 24.305 AU
- Eccentricity
- 0.9544
- Inclination
- 31.22°
- Orbital period
- 119.8 years
- Perihelion
- 1.107 AU
- Aphelion
- 47.502 AU
- Longitude of ascending node
- 272.07°
- Argument of periapsis
- 60.45°
- Epoch · J2000
- 2453849.5
- Orbit class · HTC
- Halley-type comet
- Earth MOID · 120.7 LD
- 0.3102 AU
- Tisserand (Jupiter)
- 1.317
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 1,702
- Data arc
- 117.5 years
- First observed
- 24 June 1889
- Last observed
- 11 December 2006
- Residual RMS
- 0.83 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 15.7
- Total magnitude M₁ · K₁ 13
- 15.7
Discovery & classification
Also known as 177P · 177P/1889 M1 · 177P/2006 M3
Sources
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB