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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

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Only observations that have a description and at least one image attached.

3800 Karayusuf

15.3.2020 at 01.59 - 02.19 - Orimattila, Artjärvi, Tähtikallio (II)
Kari Laihia, Juha Blad, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

3800 Karayusuf (1984 AB, 1975 XL4) An asteroid on Mars-crossing was photographed on the second night of the March work. The asteroid was discovered by the American astronomer Eleanor Francis "Glo" at the Helin Palomar Observatory on January 4, 1984. The asteroid is named after a friend of the discoverer, Syrian Dr. Alford S. Karayusuf. Spectral class spec_B => S stone. The asteroid was also considered an audible asteroid, but didn’t recent studies support it? Source Wikipedia https://en.wikipedia.org/wiki/3800_Karayusuf . The rotational speed of an asteroid is just to the extent that it can di...

Images: 3 pcs

Binocular comet PANSTARRS

15.3.2020 at 00.14 - 00.34 - Orimattila, Artjärvi, Tähtikallio (IV)
Kari Laihia, Juha Blad, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

The comet C / 2017 T2 (PANSTARRS) was filmed on the second night of the March work. The comet was discovered by the PAN-STARRS 1 telescope (Haleakala) on October 2, 2017. The comet is now at its brightest until summer, the perihelion will be 4.5.2020. When photographing, the comet was 1,767au away and the closest it was on December 28th. 2019 1.52au. 1Picture. stacked Average by comet. 2Picture. stacked according to the average comet. MaximDL Histogram Specification tool / Straight-Line stretch. Tail noticeable approx. 10 'and comma 8' measured according to the marks. 3Picture. stacked...

Images: 5 pcs

Telescopic comet NEAT

14.3.2020 at 23.49 - 00.08 - Orimattila, Artjärvi, Tähtikallio
Kari Laihia, Juha Blad, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

246P / (NEAT) The periodic comet of the Jupiter family was filmed on the second night of the March work. The comet was discovered in the Near Earth Asteroid Tracking (NEAT) search program on January 14, 2004, at Haleakala Observatory. The comet is on the orbit of the Hilda group and forms a 2: 3 orbital resonance with Jupiter. When photographing the comet was 2,445au away, the nearest 2,384au on April 9, 2020. 1Picture. stacked Average by comet. Tail noticeable approx.50 "and comma 16". 2Picture. stacked Summit by the stars. The movement is poorly visible. Asteroid (175974) 2000 NC13 20.41mag,...

Images: 4 pcs

(38181) 1999 JG124

14.3.2020 at 23.26 - 23.37 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

(38181) 1999 JG124 (1999 JG124,1992 KN) The Mars-crossing asteroid was photographed on the second night of the March work. The phocae family asteroid was discovered by the LINEAR Socorro exploration program on May 15, 1999. The total estimate is 3.6km. No information on spectrum and rotation. The orbit of the asteroid comes scarcely inside the orbit of the planet Mars. When photographing the asteroid at a distance of 0.768au, the closest it was 0.756au on March 27, 2020. When photographing the target, the asteroid went over a bright star in the last images. 1Picture. first image measured, 2020...

Images: 3 pcs

Telescopic comet Shoemaker

14.3.2020 at 22.38 - 22.57 - Orimattila, Artjärvi, Tähtikallio
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

155P / (Shoemaker 3) The periodic comet of the Jupiter family was filmed on the second night of the March work. The comet was discovered on the Near Earth Asteroid Tracking (NEAT) search program on January 10, 1986. The discovery was made by Caroline and Eugene Shoemaker with a 0.46m Schmidt telescope at the Palomar Observatory, source GARY W. KRONK'S COMETOGRAPHY https://cometography.com/pcomets/155p.html . the comet was 1.2404au away, the nearest 1,026au on February 4, 2020. The comet is already moving away and clearly dimmer than when we filmed it in January 2020. In Perihel, the comet ...

Images: 4 pcs

(31472) 1999 CT36

14.3.2020 at 22.37 - 22.56 - Orimattila, Artjärvi, Tähtikallio (I)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

(31472) 1999 CT36 (1999 CT36,1987 UP3,2000 KL45,2003 HX55) The asteroid at the inner edge of the main zone was imaged on the second night of the March work. When we photographed the comet 155P / Shoemaker 3 it came with the picture. The asteroid was discovered by the LINEAR Socorro exploration program on February 10, 1999. Estimated size 3.6km and rotation time 3.2h / r. When photographing, the asteroid was 1,624au away and the closest was 2/294au on 2/29/2020. 1Picture. first image measured, 2020-03-14 20: 38: 24UT 2458923.36000JDUT 11h11m34.51s + 16d41'07.1 "17.7mag Std Dev 58.914, JPL H...

Images: 3 pcs

(52768) 1998 OR2

14.3.2020 at 21.24 - 21.52 - Orimattila, Artjärvi, Tähtikallio (IV)
Kari Laihia, Juha Blad, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

(52768) 1998 OR2 (1998 OR2) The Amor NEO PHA Mars-crossing asteroid was photographed on the second night of the March work. The potentially earth-threatening asteroid was discovered by the NEAT prospecting halo at the Haleakala Observatory on July 24, 1998. Amor 1998 The OR2 asteroid is the largest of the Earth-threatening PHA asteroids. We also photographed this asteroid the night before. The size of the asteroid is estimated at 2-4km and the rotational speed is 4.1120h / r, the spectral type estimated at LS, strongly reddish? When filming the asteroid was 0.209au away, the closest it will be...

Images: 3 pcs

22906 Lisauckis

14.3.2020 at 21.00 - 21.19 - Orimattila, Artjärvi, Tähtikallio (I)
Kari Laihia, Juha Blad, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

22906 Lisauckis (1999 TQ25, 1998 LA3) The asteroid at the inner edge of the main zone was photographed on the second night of the March work. When we photographed (36284) 2000 DM8 Apollo / NEO it came according to the picture. The asteroid was discovered by the LINEAR Socorro exploration program on October 3, 1999. The asteroid is named after American physics, chemistry, biology teacher Rhonda Lisauckis. He directed his students to be finalists in the 2006 Discovery Channel Young Scientist Challenge (DCYSC). He teaches at the Covenant Christian Academy, Huntsville, Alabama. In total, Rhonda Li...

Images: 3 pcs

1202 Marina

14.3.2020 at 20.39 - 20.58 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

1202 Marina (1931 RL, 1931 TH, 1980 BL3, A924 WG, A924 YA) The asteroid on the outer edge of the main zone was photographed on the second night of the March work. The asteroid of the 3: 2 orbital resonance of Jilditer in Hilda was discovered by the Soviet (Georgian) Grigory Nikolayevich Neujmin at the Simeis Observatory in Crimea on September 13, 1931. The asteroid was named after Marina Davydovna Lavrova-Berg, who worked at the Pulkovo Observatory from 1931-1942. Marina Lavrova-Berg's closest colleague Gavriil Adrianovich Tikhov (1875-1960), a responsible member of the Soviet Academy of S...

Images: 3 pcs

Telescopic comet Schwassmann-Wachmann

14.3.2020 at 19.48 - 20.07 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

29P / (Schwassmann-Wachmann) The periodic comet of the Jupiter family was filmed on the second night of the March work. Outbreaks sometimes occur in a comet, which is why we have tried to portray many times. Discharges may increase the brightness by 1-5 mag. , source Wikipedia https://en.wikipedia.org/wiki/29P/Schwassmann–Wachmann . The size of the comet's core is 60.4km. When photographing the comet was 6,642au away, the closest it was 4,747au on October 10, 2019. 1Picture. Average stack by comet. 2Picture The sum of the stack according to the stars. No asteroids less than 19.0 mag in the...

Images: 4 pcs

Telescopic comet PANSTARRS

14.3.2020 at 01.37 - 01.56 - Orimattila, Artjärvi, Tähtikallio (II)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Toni Veikkolainen, Veikko Mäkelä, Hannu Määttänen, Porin Karhunvartijat

The comet C / 2017 K2 (PANSTARRS) was filmed on the second night of the March work. A comet on a hyperbolic orbit was discovered by PANSTARRS (PS1) on May 21, 2017 at a distance of 16.09au. The comet will come to Perihel in December 2022. We have already filmed this in the fall of 2019, and we intend to continue to monitor it. First Studies in Comet, Astrophysical Journal Letters, Volume 849, Number 1. https://iopscience.iop.org/article/10.3847/2041-8213/aa921f/meta . The comet is the second furthest found comet! Only C / 2010 U3 (Boattini) was found at a distance of 18.4au, the source of the ...

Images: 5 pcs

Transit overcast

11.11.2019 at 14.35 - 16.05 - Ulvila
Juha Ojanperä, Vesa Puistovaara, Hannu Määttänen, Porin Karhunvartijat

We gathered with a small group at the Ulvila observatory to try to detect Mercury's overrun, defying the probabilities. However, the threat was futile because the weather elf had already decided otherwise and that most likely scenario materialized. Throughout the crossing, the sky was almost completely gray and cloudy and light snow was obtained. It was only just before the onset of the overflow that the sun briefly glanced a little at the gap in the cloud, but by the beginning of the overflow the sun was already firmly behind a flat cloud curtain. However, we drank overflow coffees and wa...

2159 Kukkamaki

14.9.2019 at 01.47 - 02.08 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

2159 Kukkamaki (1941 UX, 1929 TL, 1933 UU1,1935 EL, 1939 FS, 1949 WM, 1951 GG1.1970 EB, 1974 CD1.1978 EB) The asteroid at the edge of the main zone was photographed on the first night of the September 2019 work. Finland The target of our 100 projects is 154. The asteroid was discovered by Liisi Oterma on October 16, 1941 in Iso-Heikkilä, Turku. The asteroid is named after Professor Tauno Johannes Kukkamäki, a Finnish surveyor. Tauno Kukkamäki defended his dissertation on the Väisälä comparator developed by Yrjö Väisälä, which could measure metric measuring rods (quartz meters) even more accura...

Images: 3 pcs

(53675) 2000 DC73

14.9.2019 at 01.22 - 01.44 - Orimattila, Artjärvi, Tähtikallio (I)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

(53675) 2000 DC73 (2000 DC73,1991 VY6,1998 UR29) The asteroid on the inner edge of the main zone was imaged on the first night of the September 2019 work. When we photographed the 1545 Thernoe asteroid, this came into the picture. The asteroid was discovered by the LINEAR Socorro exploration program on February 29, 2000. The estimated size of the asteroid is 2.4km. When we photographed, the asteroid was 0.831au away and the closest was 20111-09-28 0.811au. 1Picture. first stack of 1-4 images measured, 2019-09-13 22: 21: 22UT 2458740.43150JDUT 00h44m51.61s + 01d08'56.6 "15.7mag Std Dev 705....

Images: 3 pcs

1545 Thernoe

14.9.2019 at 01.21 - 01.44 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

1545 Thernoe (1941 UW, 1932 YD, 1955 YY, 1957 HY, A906 FE, A915 CE) The asteroid in the central zone of the main zone was photographed on the first night of the September 2019 work. Finland The target of our 100 projects is 176. The asteroid was discovered by Liisi Oterma on October 15, 1941 in Iso-Heikkilä, Turku. The asteroid is named after the Danish astronomer Karl August Oscar Thernöe (1911-1987) at the Copenhagen Observatory. Karl Thernöe was also a popularizer of astronomy and director of the IAU's Central Bureau for Astronomical Telegrams (1950-1964), source Wikipedia https://en.wi...

Images: 3 pcs

1552 Bessel

14.9.2019 at 00.56 - 01.16 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

1552 Bessel (1938 DE1.1933 FJ1.1948 EH, 1951 UF) The asteroid on the outer edge of the main zone was photographed on the first night of the September 2019 work. Finland 100 The target of our project was 177. The asteroid of the family was discovered by Yrjö Väisälä on February 24, 1938 in Iso-Heikkilä, Turku. The asteroid is named after the German mathematician astronomer Friedrich Wilhelm Bessel (1784-1846). Bessel is especially known for the first gauges of stellar e.g. 61 Gygni parallax. Friedrich Bessel was invited to join several science academies despite having no formal university educa...

Images: 3 pcs

Telescopic comet Schwassmann-Wachmann

14.9.2019 at 00.28 - 00.49 - Orimattila, Artjärvi, Tähtikallio (II)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

29P / Schwassmann-Wachmann The periodic comet of the Jupiter family was filmed on the first night of the September 2019 work. Outbreaks sometimes occur in a comet, which is why we have tried to portray many times. The shooting was hampered by the Moon, which caused a strong gradient in the images. When photographing the comet, it was almost 4.87au closest to the ground. 1Picture. Average stack by comet. 2 picture Average stack according to the stars. No asteroids below 20.5mag in the picture. 3Picture. first image measured, 2019-09-13T 21: 27: 53UT 2458740.39436JDUT 00h52m22.52s + 16d12'20...

Images: 4 pcs

M101

14.9.2019 at 00.10 - 00.18 - Orimattila, Artjärvi, Tähtikallio (IV)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

M101, NGC 5457 The cartwheel galaxy was described as the first night of the September 2019 work. The galaxy was discovered by French astronomer / surveyor Pierre Méchain on March 27, 1781, source Wikipedia https://en.wikipedia.org/wiki/Pinwheel_Galaxy . Méchain reported his discovery to his friend Charles Messier who added it to his list. Pierre Méchain has discovered a total of eight comets and in association with others 3 lisää. Syväntaivaan items he found yet Amateur Eventually, a total of 25, the source Wikipedia https://en.wikipedia.org/wiki/Pierre_Méchain . The most important work for wh...

Images: 2 pcs

Telescopic comet Africano

13.9.2019 at 23.14 - 23.33 - Orimattila, Artjärvi, Tähtikallio (IV)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

The comet C / 2018 W2 (Africano) was filmed on the first night of the September 2019 work. We filmed this comet a week earlier. The comet was discovered by Brian M. Africano on November 27, 2018 in the Mount Lemmon Survey search program. 1Picture. average stack (Average) by comet. 2Picture. stack (Average) stacked according to the stars. No asteroids less than 24 mag in the picture. 3Picture. first picture measured, 2019-09-13T 20: 13: 54UT 2458740.34298JDUT 01h51m50.56s + 45d56'00.9 "N12.7mag Std Dev 1922.052, JPL Horizon 20: 13: 54UT 01h51'50.38s + 45d56'07.6" T12.64mag . 4Pictur...

Images: 4 pcs

(80593) 2000 AG144

13.9.2019 at 22.50 - 23.09 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Olli-Pekka Joronen, Christos Oscar Kambiselis, Hannu Määttänen, Porin Karhunvartijat

(80593) 2000 AG144 (2000 AG144.1974 PD) The Mars-Crosser asteroid was photographed on the first night of the September 2019 work. The asteroid was discovered by the LINEAR Socorro exploration program on January 5, 2000. The estimated size of the asteroid is 4.9km. When we photographed, the asteroid was 0.64au away and the nearest was 20139-09-7 0.639au. Mars-Crosser on asteroids Wikipedia, https://en.wikipedia.org/wiki/List_Marsin_radan_cutting_little planets . 1Picture first picture measured, 2019-09-013T 19: 50: 16UT 2458740.32657JDUT 21h57m05.13s + 17d59'02.3 "14.0mag Std Dev 2819.868, ...

Images: 3 pcs

Search result contains observations from time period 1.1.2000 klo 00.00 - 6.12.2021 klo 7.33.