Comet 29P/Schwassmann-Wachmann-Schwarzenegger 60"
Taken by Odd Trondal on November 14, 2024 @
Oslo
Click photo for larger image
| |
Camera Used: Unavailable Unavailable Exposure Time: Unavailable Aperture: Unavailable ISO: Unavailable Date Taken: Unavailable |
|
More images
Details:
 |
Here is a new interesting calculation. I measured the
angular diameter of the comets head to be approximately : 60" or 0.00029 radians.
With the distance from the earth : 6.317 au = 945 000 000 km
Then we can find the diameter of the head : 945 000 000 km x 0.00029 = 274,889 km approximately 275 000 km
The speed of expansion since my outburst discovery, 1. November, is 13 days : Radius/13 days = (275 000/2 km) / 13 days = 10577 km/day
= 0.12 km/sec. which is close to Halley's comet (0.11 km/sec. calculated at 6.24au from the sun, see link to article)
For Halley's comet, we have observed and calculated dust outflow velocities :
At 1.5 au from the sun : 0.231 km/sec.
at 6.24 au from the sun : 0.231/sqrt(6.24/1.5) km/sec.= 0.11 km/sec. (calculated)
and at 14 au from the sun : 0.045 km/sec. (ref, Sekanina et al. 1992)
https://link.springer.com/chapter/10.1007/978-94-009-0209-1_15
So this outburst of 29P is approximately the same as Halley's continuous dust outflow at the same distance from the sun.
So my conclusion is so far, it is the other way around. This is normal comet with long periods of inactivity (approx. 52–60 days.)
Sun distance (au): 6,24 Perihel 28.March 2019 Sun dist.(au): 5,77
Time: 02:05UT 2024-11-14 Exp. 38 X 125sec
Tel: C14 @ f/6.8 AP7 CCD 2.0"/pix Paramount GT-1100S Tenagra Norway
Odd Trondal Obs.code 238 (Uranium). Oslo Norway.
Software used : TheSky6,CCDSoft 5, MSB Astroart 2.0,7.0, Paint
Latest images :
Eliot Herman on November 10, 2024 @ Utah Desert Observatory
Eliot Herman on November 8, 2024 @ Utah Desert Observatory
Odd Trondal on November 7, 2024 @ Oslo
Georg Klingersberger on November 5, 2024 @ Postalm 1300m Salzburg Austria
Mike Olason on November 5, 2024 @ Tucson, Arizona
Odd Trondal on November 4, 2024 @ Oslo
Odd Trondal on November 3, 2024 @ Oslo
Odd Trondal on November 2, 2024 @ Oslo
Odd Trondal on November 1, 2024 @ Oslo
Odd Trondal on October 25, 2024 @ Oslo
Odd Trondal on October 22, 2024 @ Oslo
Odd Trondal on October 12, 2024 @ Oslo
Odd Trondal on October 4, 2024 @ Oslo
Odd Trondal on September 26, 2024 @ Oslo
Odd Trondal on September 20, 2024 @ Oslo
Odd Trondal on May 18, 2024 @ Oslo
Odd Trondal on May 16, 2024 @ Oslo
Odd Trondal on May 9, 2024 @ Oslo
Odd Trondal on May 2, 2024 @ Oslo
Odd Trondal on April 27, 2024 @ Oslo
Odd Trondal on April 21, 2024 @ Oslo
Odd Trondal on April 15, 2024 @ Oslo
Odd Trondal on April 3, 2024 @ Oslo
Milan Antoš on March 30, 2024 @ Jablonec nad Nisou, Czech rep
Odd Trondal on March 29, 2024 @ Oslo
Eliot Herman on March 27, 2024 @ Rio Hurtado Valley, Chile
Odd Trondal on March 12, 2024 @ Oslo
Odd Trondal on February 26, 2024 @ Oslo
Odd Trondal on February 17, 2024 @ Oslo
Eliot Herman on February 12, 2023 @ Utah Desert Observatory and Rio Hurtado Valley, Chile
Odd Trondal on February 8, 2024 @ Oslo
Odd Trondal on February 7, 2024 @ Oslo
Odd Trondal on February 5, 2024 @ Oslo
Georg Klingersberger on February 5, 2024 @ Kobernaußen Upper Austria
Odd Trondal on February 1, 2024 @ Oslo
Odd Trondal on January 30, 2024 @ Oslo
Michael Jaeger on January 29, 2024 @ AZM Martinsberg Austria
Odd Trondal on January 22, 2024 @ Oslo
Eliot Herman on January 21, 2024 @ Rio Hurtado Valley, Chile
Georg Klingersberger on January 20, 2024 @ Kobernaußen Upper Austria
Eliot Herman on January 20, 2024 @ Rio Hurtado Valley, Chile
Odd Trondal on January 16, 2024 @ Oslo
Bob Beal on January 15, 2024 @ St. George, Utah, USA
Odd Trondal on January 10, 2024 @ Oslo
Milan Antoš on January 8, 2024 @ Jablonec nad Nisou, Czech rep
Odd Trondal on January 6, 2024 @ Oslo
Eliot Herman on January 4, 2024 @ Rio Hurtado Valley, Chile
Georg Klingersberger on December 28, 2023 @ Kobernaußen Upper Austria
Odd Trondal on December 26, 2023 @ Oslo
Eliot Herman on December 24, 2023 @ Rio Hurtado Valley, Chile
Odd Trondal on December 24, 2023 @ Oslo
Odd Trondal on December 23, 2023 @ Oslo
Eliot Herman on December 20, 2023 @ Rio Hurtado Valley, Chile
Odd Trondal on December 16, 2023 @ Oslo
Eliot Herman on December 11, 2023 @ Rio Hurtado Valley, Chile
Eliot Herman on December 9, 2023 @ Rio Hurtado Valley, Chile
Older information
Photographer's website:
https://www.flickr.com/photos/odd_trondal/
|
|
|