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Contains:  Saturn nebula, NGC 7009
Getting plate-solving status, please wait...
NGC 7009 / tumbling object : Asteroid 2016 RB1 ? update, 


NGC 7009 / tumbling object : Asteroid 2016 RB1 ? update

NGC 7009 / tumbling object : Asteroid 2016 RB1 ? update

Technical card

Imaging telescope or lens:Meade LX200 8" GPS

Imaging camera:Atik Cameras Atik 383 L+ Color

Mount:Meade Equatorial Wedge on Tripod

Guiding telescope or lens:Meade ETX70-AT

Guiding camera:Meade DSI Pro 2

Focal reducer:f6.3 focal reducer/field flattener Meade

Software:Fitswork4Artemis capture

Filter:Meade LPR

Resolution: 3354x2529

Dates:Sept. 6, 2016

Frames:Meade LPR: 2x300" -20C bin 1x1

Integration: 0.2 hours

Darks: ~3

Bias: ~20

Avg. Moon age: 4.71 days

Avg. Moon phase: 23.12%

Temperature: 18.00 job: 1235704

RA center: 21h 4' 19"

DEC center: -11° 18' 25"

Pixel scale: 0.883 arcsec/pixel

Orientation: -177.387 degrees

Field radius: 0.515

Locations: Home Observatory, Syke, Niedersachsen, Germany


This image comprises two consequtive images taken during my NGC 7009 imaging session.
On two subs I found this tumbling object coming in from right to left. The break at half left is due
to the CCD download time of the first overlaid image (download time 10 sec.)
Hence it should be a relatively slow object.

Now the question is : what was it?

Time of capturing the first image was 06 Sept 2016 at 21:31 UTC
Estimated magn. 12
Aquisition time : 300 s
Field of view : 0.515 degree
resulting Object transverse speed = 0.015 / 300s = 0.00005 degree/s
which means the object is pretty slow compared to typical meteors , polar orbiting satellites,
LEO satellites.

There were four NEO Asteroids between Sept. 6. to 9. 2016 :

2016 RB1 0.1 LD CA on Sept. 7th / Size : 12m
2016 RO17 2.3 LD CA on Sept. 8th / Size : 23m
2016 RL 17 8.7 LD CA on Sept. 9th / Size : 21 m
2016 RY 17 3.6 LD CA on Sept. 9th / Size : 37 m

I would rule out the last three, because of their size and LD (Lunar distance) and
time of CA ( Closest Approach).

The Virtual Telecope in Italy got images of 2016 RB! on Sept. 6, one day before NA
(NA could only be observed at the southern Sky hemisphere)

So, there is a good chance that I got by luck 2016 RB1, but I need further investigation of the exact orbit parameters.

Update :
Meantime I found the image taken by the VT, Italy :
centered at constellation pisces, unfortunately there was no time stamp. :
Pisces/ Aquarius ca 2.5 hours difference : just before midnight. Bingo! (almost...)

Any hints or suggestions highly welcome !



License: None (All rights reserved)

Sky plot

Sky plot


NGC 7009 / tumbling object : Asteroid 2016 RB1 ? update,