2025 May 03 ~00:13 UT: (137170) 1999 HF1 occults UCAC4 780-026183 (13.4 mag)
Aten asteroid! Short max. duration of only 0.45 s! Last update: 2025 Apr 10, Occult Watcher Cloud https://cloud.occultwatcher.net/event/1583-137170-208533-652128-U026183
2025 Apr 07 ~22:50 UT: (4544) Xanthus occults TYC 2959-01736-1 (11.8 mag)
Apollo asteroid! Extreme short max. duration of only 0.08 s! Last update: 2025 Apr 01 Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1557-4544-109400-650360-T01736-1
2025 Apr 07 ~00:48 UT: (137170) 1999 HF1 occults UCAC4 748-053335 (12.6 mag)
Aten asteroid! Very short max. duration of only 0.37 s! Last update: 2025 Apr 01, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1557-137170-246599-651732-U053335
2025 Apr 01 ~21:45 UT: (137170) 1999 HF1 occults TYC 3906-01162-1 (9.1 mag)
Aten asteroid! Bright star! Very short max. duration of only 0.35 s! Last update: 2025 Mar 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1551-137170-252598-651470-T01162-1
2025 Mar 21 ~01:14 UT: (137170) 1999 HF1 occults UCAC4 658-067278 (13.7 mag)
Aten asteroid! Faint star! Very short max. duration of only 0.30 s! Last update: 2025 Mar 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1540-137170-263499-650602-U067278
2025 Mar 18 ~00:52 UT: (137170) 1999 HF1 occults TYC 2650-01478-1 (11.2 mag)
Aten asteroid! Very short max. duration of only 0.29 s! Last update: 2025 Mar 04, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1537-137170-265858-650318-T01478-1
2025 Mar 17 ~03:48 UT: (137170) 1999 HF1 occults UCAC4 628-062746 (12.4 mag)
Aten asteroid! Very short max. duration of only 0.29 s! Last update: 2025 Mar 04, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1536-137170-266529-650230-U062746
2025 Mar 16 ~01:21 UT: (137170) 1999 HF1 occults TYC 2642-00878-1 (7.8 mag)
Aten asteroid! Bright star! Very short max. duration of only 0.30 s! Last update: 2025 Mar 04, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1535-137170-267365-650116-T00878-1
2025 Mar 14 ~01:29 UT: (137170) 1999 HF1 occults UCAC4 602-068313 (12.2 mag)
Aten asteroid! Very short max. duration of only 0.27 s! Last update: 2025 Mar 04, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1533-137170-268871-649902-U068313
2025 Mar 13 ~04:17 UT: (137170) 1999 HF1 occults TYC 21334-01192-1 (11.2 mag)
Aten asteroid! Very short max. duration of only 0.27 s! Last update: 2025 Mar 04, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1532-137170-269534-649803-T01192-1