Assertion: comet's period | /r/HasProperty | estimated around 6 million years
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Source sentences:
text: Long-period comets such as Comet West and C/1999 F1 can have aphelion distances of nearly 70,000 AU (0.34 pc; 1.1 ly) with orbital periods estimated around 6 million years.
text: Long-period comets such as Comet West and C/1999 F1 can have aphelion distances of nearly 70,000 AU (0.34 pc; 1.1 ly) with orbital periods estimated around 6 million years.
text: Long-period comets such as Comet West and C/1999 F1 can have aphelion distances of nearly 70,000 AU (0.34 pc; 1.1 ly) with orbital periods estimated around 6 million years.