Observation by Alex Pratt: Video astrometry of Near-Earth Object (6...

Uploaded by

Alex Pratt

Observer

Alex Pratt

Observed

2018 May 31 - 21:25

Uploaded

2018 Jun 02 - 18:13

Objects

66391 Moshup

Equipment

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

Exposure

0.16s exposures

Location

Z92

Target name

Near-Earth Object (66391) 1999 KW4

Title

Video astrometry of Near-Earth Object (66391) 1999 KW4

About this image

In late May this Aten-type asteroid passed relatively near the Earth at a distance of 7 million miles, when it reached mag 13.0. It is classified as a Potentially Hazardous Asteroid (PHA). Poor weather ruined the chances of doing multi-night astrometry.

On May 31 I recorded a number of 1-minute videos using OccuRec and they were measured with Tangra. Its sky motion at that time was derived to be 0.26"/sec, 0.24"/sec in RA and 0.09"/sec in Dec, so almost all of its motion was in RA. The following astrometric results were submitted to the MPC.

n2018 05 31.92397816 54 39.80 +32 08 34.7 13.0 R Z92

n2018 05 31.93368916 54 24.20 +32 09 48.6 13.2 R Z92

n2018 05 31.94830216 54 00.74 +32 11 39.1 13.2 R Z92

n2018 05 31.96910716 53 27.38 +32 14 15.2 13.5 R Z92

Files associated with this observation

(66391) 1999 KW4 - 20180531.jpg (568.5 kB)

Like this image

Jeremy Shears, David Basey, Andy Wilson, David Swan, Grant Privett, Peter Carson

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