Observation by Tim Haymes: 2025 EF4

Uploaded by

Tim Haymes

Observer

Tim Haymes

Observed

2025 Mar 15 - 22:11

Uploaded

2025 Mar 17 - 17:38

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Constellation

Ursa Major

Field centre

RA: 11^h23^m
Dec: +50°54'
Position angle: -1°15'

Field size

0°24' × 0°16'

Equipment

C11 at F5.8
QHY174mGPS

Exposure

30s x 9

Location

North Oxfordshire

Target name

Apollo Asteroid 2025 EF4

Title

2025 EF4

About this image

Following the NEA through UMa. I used topocentic coordinates for the IAU minor planet predictions (my location) and found it easily at mag 14 in 2 sec. I then used 30sec subs for this image. Fascinating to see. I would like to get some photometry but that has always been a slippery slope to me.

Files associated with this observation

NEO 2025 EF4 and ugc6339_lab.jpg (1.0 MB)

Like this image

Andy Wilson, Grant Privett, Alex Pratt, Dr Paul Leyland, Dominic Ford

Comments

Alex Pratt, 2025 Mar 17 - 22:20 UTC

Hi Tim,

If they're FITS files have you tried Astrometrica?

Alex.

Dr Paul Leyland, 2025 Mar 18 - 00:26 UTC

If you can provide the FITS file a number of people here can help you with the photometry or, in extremis, do it for you.

Alex proposes Astrometrica. I would use APT and others in the ARPS favour Tycho Tracker.

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