Observation by Alex Pratt: Video astrometry of PHA 2024 MK - 2024 J...

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Alex Pratt

Observer

Alex Pratt

Observed

2024 Jul 01 - 00:01

Uploaded

2024 Jul 17 - 14:48

Objects

2024 MK

Equipment

C11 f/10 and f/3.3 focal reducer
QHY174M-GPS camera
SharpCap Pro (recording)
Tangra (reduction)

Exposure

60 x 1s

Location

Leeds, West Yorkshire (Bortle 7)

Target name

PHA 2024 MK

Title

Video astrometry of PHA 2024 MK - 2024 Jul 1

About this image

I was clouded out on June 29/30, the night of closest approach of this Potentially Hazardous Asteroid, but conditions were much better in the early hours of July 1. The asteroid was then nearer mag 15.

I obtained some 60s-duration recordings with my digital GPS-synched camera (1s exposure time) but Tangra was written to support analogue video cameras. Its developer Hristo Pavlov kindly modified a beta version to read the GPS-timestamp from the ADV file and applied other fixes in the motion-fitting code.

At 00:01 UT I measured the asteroid's sky motion to be 0.35"/sec in RA and 0.22"/sec in Dec. MPC gave a combined value of 25"/min (0.42"/sec).

Astrometry was submitted to the MPC and the residuals compare well with other stations. Further tests with the digital camera are planned, weather permitting.

Files associated with this observation

2024 MK_20240701_0001_ ARP.png (768.2 kB)

Like this image

Nick Quinn, Jeremy Shears

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