Observation by Alex Pratt: (618) Elfriede occults TYC 4698-00467-1

Uploaded by

Alex Pratt

Observer

Alex Pratt

Observed

2021 Feb 01 - 19:26

Uploaded

2021 Feb 02 - 10:48

Objects

618 Elfriede

Equipment

C11 f/10 and f/3.3 focal reducer
Watec 910 video camera
IOTA-VTI GPS time inserter
OccuRec (recording)
Tangra and AOTA (reduction)

Exposure

0.04 s

Location

Z92

Target name

(618) Elfriede and TYC 4698-00467-1

Title

(618) Elfriede occults TYC 4698-00467-1

About this image

I was almost on the centreline for this event, with ~100% probability of a successful observation, if only the weather cooperated. The 128 km diameter asteroid (618) Elfriede was predicted to occult a mag. 8.8 star in Cetus for up to 6 seconds.

I was fortunate to be under a clear sky and recorded the 5 mag. drop in brightness lasting for 6.16 s

D - 19 26 15.48 ± 0.02

R - 19 26 21.64 ± 0.02

Other observers were either clouded out or too far away from the 141 km-wide shadow track.

Shortly after this event the sky gradually clouded over, heralding the oncoming snowfall.

Files associated with this observation

20210201_192615_(618) Elfriede_ARP.png (321.5 kB)

Like this image

Mike Harlow, David Basey, Jeremy Shears, Tim Haymes, Mark Phillips, Dr Andrew Smith, Alan Thomas, Matt Williams, Philip Masding

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