Astro Corner
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Celestial object
C/1978 T1 (Seargent)
1978 T1, C/1978 T1 (Seargent), Seargent
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Reference data
RADate-dependentMoving object · use an ephemeris
DecDate-dependentMoving object · use an ephemeris
Magnitude—
Angular size—
Position angle—
Distance—
Constellation—
Solar System catalogue
JPL SBDBMoving-object reference
Comets and minor planets move against the background sky. Astro Corner therefore keeps their orbital catalogue record separately and does not pretend a single RA/Dec is permanently correct.
Primary designation1978 T1
JPL SPK-ID1000539
Orbit classCOM
Orbit IDJPL 6
Near-Earth objectNo
Potentially hazardousNo
Epoch · JD2443796.5
Eccentricity0.998333247356
Semi-major axis221.914123603 AU
Perihelion distance0.369875952 AU
Orbital period1,207,468.6 days
Earth MOID0.599160000 AU
Jupiter Tisserand0.308000
Inclination67.82827522°
Absolute magnitude · H—
Diameter—
Albedo—
Last catalogue sync2026-09-18 08:10:02
Planning coordinates are intentionally separate.A later Horizons ephemeris layer can calculate the object's apparent position for a specific date, time and observing location. Until then, static-sky tools are hidden for this record rather than showing misleading coordinates.
Open JPL Small-Body Database 
Reference transparencySources & data provenanceSee where catalogue identities and imported reference fields came from.4 records
Community observations
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Images of this object
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