Olbers
13P/Olbers
Where is it now
- Distance from Sun
- 7.941 AU
- True anomaly
- 140.26°
- 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 33m 22s
- Declination
- -40° 56′ 25″
- Constellation
- Corona Australis
- Distance from Earth
- 7.7 AU
- Elongation from the Sun
- 100.5° — 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
- 16.689 AU
- Eccentricity
- 0.9297
- Inclination
- 44.62°
- Orbital period
- 68.18 years
- Perihelion
- 1.173 AU
- Aphelion
- 32.205 AU
- Longitude of ascending node
- 85.87°
- Argument of periapsis
- 64.51°
- Epoch · J2000
- 2459193.5
- Orbit class · HTC
- Halley-type comet
- Earth MOID · 183.0 LD
- 0.4703 AU
- Tisserand (Jupiter)
- 1.251
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 2,605
- Data arc
- 137.9 years
- First observed
- 27 August 1887
- Last observed
- 31 July 2025
- Residual RMS
- 0.57 ″
- Solution · Davide Farnocchia
- 28 July 2026
Visual & observation
- Absolute magnitude (H)
- 6.7
- Total magnitude M₁ · K₁ 18.5
- 6.7
Discovery & classification
Also known as 13P
Sources
- orbital elements: JPL SBDB