NSF award 2605475 · University of Hawaii

Long Period Comets and the Collisional History of the Solar System

Final report due

29 December 2029

in 1,168 days · The award ends on 31 August 2029.

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award ending 2029-08-31 · Research.gov
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Extension request17 Jul 2029in 1003 days
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PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Aug 2029in 1038 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 August 2029.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 29 December 2029.

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Award card

Award number: 2605475
Period of support: 1 Sep 2026 – 31 Aug 2029
Amount: $262,273
Awardee: University of Hawaii, Honolulu, HI
Program: PLANETARY ASTRONOMY
Directorate: MPS

Abstract

Comets, as remnants of the early solar system, offer key insights into planetary formation, dynamics, and small body evolution. Divided into long-period (LPCs) and short period comets (SPCs), they serve as records of the protoplanetary disk. LPCs, likely formed closer to the Sun, were scattered to the distant Oort cloud by giant planets. Their distant orbits minimize evolution, preserving original disk material more…

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