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Old 22-05-2025, 02:32 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,762
After browsing Spaceweather, I set up to see if I could record this fast-moving NEO which was predicted to approach within 0.3 Lunar Distances at closest approach.

I calculated this distance to be approx. 115,200 kms or 72,000 miles, a very close approach.

My mount control planetarium application placed this NEO some 5 or 6 degrees off, compared to the JPL Horizons plotted positions, so I went with JPL and it was bang on the target for this 14km fast moving rock.
Tak Mewlon 210, Tak R/F x0.8, ASI2600MM Pro Bin 2x2, single 30 sec exposure.

From the FITs Header in CCDStack:
2025-05-21T11:54:41.076 UT Date Observed.
21/05/2025 09:54:41.079 PM STD Local Time at exposure start.
Exposure 30
Pixel_size_X 7.52
Pixel_size_Y 7.52
Binning X 2
Binning Y 2

From Image Link in The Sky X Pro:
******** ASTROMETRIC SOLUTION RESULTS ********
Center RA (2000.0): 13h 33m 34.69s
Center Dec (2000.0): -28° 25' 57.1"
Scale: 0.7410 arcseconds/pixel
Size (pixels): 3124 x 2088
Angular Size: 0° 38' 35" x 0° 25' 47"
Position Angle: 0° 51' from north through east
Mirror Image: No
RMS: 1.35 (X: 1.11 Y: 0.77)
Number of Stars Used in Solution: 200 (100%)
FWHM: 2.47 pixels, 1.83 arcseconds
*********************************** ************

This attached full res 1280x960 crop from the centre of the frame has been annotated in PixInsight.

Dennis.

EDIT: Added a full frame inverted view showing the trail across 12x30 sec exposures.
Attached Thumbnails
Click for full-size image (2025_KF_00000207-Annotated-Crop-1280-FR.jpg)
199.9 KB20 views
Click for full-size image (2025 KF FF 1280x960.jpg)
165.1 KB16 views

Last edited by Dennis; 22-05-2025 at 02:47 PM.
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