Dubiago
C/1921 H1 (Dubiago)
Where is it now
- Distance from Sun
- 33.08 AU
- True anomaly
- 179.65°
- 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
- 23h 41m 26s
- Declination
- -27° 00′ 21″
- Constellation
- Sculptor
- Distance from Earth
- 32.17 AU
- Elongation from the Sun
- 154.75° — well clear of the Sun
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
- 17.102 AU
- Eccentricity
- 0.9347
- Inclination
- 22.35°
- Orbital period
- 70.73 years
- Perihelion
- 1.116 AU
- Aphelion
- 33.088 AU
- Longitude of ascending node
- 67.13°
- Argument of periapsis
- 97.48°
- Epoch · J2000
- 2422830.5
- Orbit class · HTC
- Halley-type comet
- Earth MOID · 149.2 LD
- 0.3835 AU
- Tisserand (Jupiter)
- 1.496
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 27
- Data arc
- 40 days
- First observed
- 29 April 1921
- Last observed
- 8 June 1921
- Residual RMS
- 1.41 ″
- Solution · Otto Matic
- 15 April 2021
Discovery & classification
Also known as 1921 H1
Sources
- orbital elements: JPL SBDB