Observation by Alex Pratt: (70979) 1999 XU24 occults TYC 2430-00041...

Uploaded by

Alex Pratt

Observer

Alex Pratt

Observed

2025 Feb 25 - 22:10

Uploaded

2025 Mar 04 - 14:45

Objects

70979 1999 XU24

Equipment

C11 f/10 and f/3.3 focal reducer
DVTI+CAM 430
DVTI Camera Control Tool
Tangra and AOTA (reduction)

Exposure

0.100s

Location

Z92 - Leeds, West Yorkshire (Bortle 7)

Target name

(70979) 1999 XU24 occults TYC 2430-00041-1

Title

(70979) 1999 XU24 occults TYC 2430-00041-1

About this image

On the night of 2025 Feb 25 a mag 12 star in Auriga was predicted to occult the 6 km-diameter mag 19 main-belt asteroid (70979) 1999 XU24 for up to 2.4s

Such a narrow shadow track usually results in a single chord being obtained, at best, but this event passed over the fixed stations of Philip Denyer, Simon Kidd and mine. We used a variety of cameras and GPS time insertion methods. We recorded occultation durations of PD (3.0s), SK (1.47s), ARP (2.95s).

The attached provisional plot (from Occult) shows an ellipse fitted to our 3 chords with axes of 7.7 km x 5.4 km.

A video clip of my event can be viewed here:

(70979) 1999 XU24 occults TYC 2430-00041-1

Files associated with this observation

2025Feb25_1999 XU24.png (264.2 kB)

Like this image

Jeremy Shears, Dominic Ford, David Basey, Graham Winstanley

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