C/2021 T4 (Lemmon) is an inbound long period comet discovered by the Mount Lemmon Observatory on 7 October 2021.[1]
Discovery | |
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Discovery date | 7 October 2021 |
Alternative designations | CK21T040, C6131F2 |
Orbital characteristics A | |
Observation arc | 140 days |
Perihelion | 1.4823 AU |
Eccentricity | 0.99970 |
Orbital period | 352234 yr |
Inclination | 160.76° |
Node | 257.79° |
Argument of periapsis | 329.78° |
Earth MOID | 0.497 AU (74.4 million km) |
Jupiter MOID | 0.869 AU (130.0 million km) |
Comet total magnitude (M1) | 6.9 |
Next perihelion | 31 July 2023 |
2021 in space | ||
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Space probe and telescope launches ![]() |
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Impact events | ||
Selected NEOs | ||
Exoplanets ![]() |
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Discoveries |
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Comets ![]() |
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Space exploration |
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