SOHO
C/2015 D1 (SOHO)
Where is it now
- Distance from Sun
- 2.962 AU
- True anomaly
- 170.59°
- 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
- 10h 01m 28s
- Declination
- +49° 43′ 57″
- Constellation
- Ursa Major
- Distance from Earth
- 3.47 AU
- Elongation from the Sun
- 52.69° — near the Sun — look low at dusk or dawn
Favours the northern hemisphere; low or below the horizon from far south.
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
- 4.989 AU
- Eccentricity
- 0.9943
- Inclination
- 69.62°
- Orbital period
- 11.14 years
- Perihelion
- 0.028 AU
- Aphelion
- 9.95 AU
- Longitude of ascending node
- 95.88°
- Argument of periapsis
- 234.96°
- Epoch · J2000
- 2457073.5
- Orbit class · JFC
- Jupiter-family comet (2 < T_J < 3)
- Earth MOID · 200.7 LD
- 0.5158 AU
- Tisserand (Jupiter)
- 1.116
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 9).
- Observations used
- 417
- Data arc
- 3 days
- First observed
- 18 February 2015
- Last observed
- 21 February 2015
- Residual RMS
- 0.54 ″
- Solution · Otto Matic
- 16 April 2021
Visual & observation
- Absolute magnitude (H)
- 10
- Total magnitude M₁ · K₁ 4.5
- 10
Discovery & classification
Also known as 2015 D1
Sources
- orbital elements: JPL SBDB