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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.

(523823) 2015 BG311

24.9.2022 at 22.29 - 22.35 - Orimattila, Artjärvi, Tähtikallio (I)
Kari Laihia, Christos Oscar Kambiselis, Jani Katava, Toni Veikkolainen, Porin Karhunvartijat

(523823) 2015 BG311 (2015 BG311) The asteroid Cupid NEO was imaged on the second night of the 2022 September talcos. The asteroid was discovered by the Haleakala observatory of the Pan-STARRS research program (F51 – Pan-STARRS 1, Haleakala) on November 29, 2014. The estimated size is approx. 740m. At the time of imaging, the asteroid was at a distance of 0.1936au and at its closest on October 15, 2022 at 0.16792au. 1Fig. first image of the series L15s measured, 2022-09-24T 19:29:02UT 2459847.31182JDUT 20h11m37.75s +12d06'19.2" 16.647mag Std Dev 37.255 SNR7.859 FWHM5.576" ,JPL Horizon 20:11...

Images: 3 pcs

Telescopic comet ZTF

3.9.2022 at 23.09 - 23.30 - Orimattila, Artjärvi, Tähtikallio (IV)
Kari Laihia, Toni Veikkolainen, Veikko Mäkelä, Porin Karhunvartijat

C/2022 E3 (ZTF) A comet on a hyperbolic orbit was discovered by the Palomar Mountain ZTF variable object search program (I41 Palomar Mountain ZTF) on 2022 March 2. The Zwicky Transient Facility (ZTF) is a wide-field search program for supernovae and other rapidly changing objects, based on the Samuel Oschin telescope, a 48" Schmidt telescope and a wide-field camera. The comet will enter perihelion on January 12, 2023. 1.11au from the sun. When filming, the comet was 2.1944au away in Lyra, the closest it will be 0.29au on February 2, 2023. The comet will be at its brightest at the end of Januar...

Images: 5 pcs

Active aurora band

23.10.2022 at 23.15 - 02.30 - Laitila (III)
Pirjo Koski, Porin Karhunvartijat

It was an incredibly nice evening when we finally got up to speed on the coast. There were mostly clouds throughout the evening. At the beginning of the evening, the dunes of the first and second act were often drowned in clouds. Fortunately, I continued to work, because somewhat unexpectedly, after 11 p.m., it cleared up as if by magic. I rushed off in the car and didn't get very far from my home village when it became clear that the play was starting at these very few seconds. All that helped was to drive the car into the field, cross your fingers that there would be no traffic on the ro...

Images: 7 pcs

Active aurora band

18.11.2022 at 23.50 - 01.30 - Pyhäranta (III)
Pirjo Koski, Porin Karhunvartijat

It was a nice evening in the world of repos and landscape star photography, and I was already on my way back from Pyhäranta when the car's rearview mirror lit up. I put the car in park and spent the next hour running along the fields photographing the pleasantly active Northern Lights belt. Nothing miraculous could fit into this set, the arch activated normally and the play contained a variable number of aurora pillars and an active belt. At the end, there were pulsating northern lights at the place of the arch, and the show continued dimly when I got home, ie at 01:30. The aurora borealis...

Images: 5 pcs

Telescopic comet ZTF

4.9.2022 at 03.18 - 03.37 - Orimattila, Artjärvi, Tähtikallio (II)
Kari Laihia, Toni Veikkolainen, Porin Karhunvartijat

Comet C/2020 V2 (ZTF) was imaged on the second evening of the 2022 DS days. A comet on a hyperbolic orbit was discovered by the Palomar Mountain ZTF Variable Object Discovery Program (I41 Palomar Mountain ZTF) on 2020 November 2. The Zwicky Transient Facility (ZTF) is a wide-field search program for supernovae and other rapidly changing objects based on the Samuel Oschin telescope, a 48" Schmidt telescope and a wide-field camera. The perihelion comet will arrive on 2023-05-08 2.235au from the sun. When photographing the comet, it was 4.1364au away in Ursa Major, it will be closest to 1.855au o...

Images: 3 pcs

Suuri Magellanin pilvi

25.11.2022 at 00.00 - 04.30 - Victoria, Gobur, Australia (V)
Tomi Kurri, Porin Karhunvartijat

I photographed the Large Magellanic Cloud on a moonless night in the middle of the rural darkness here in Australia. The Large Magellanic Cloud is located near the South Pole and is never visible in Finland or even in Europe. Both Magellanic Clouds are visible throughout the Australian summer high in the southern sky. The object is really spectacular and the bar structure of the galaxy can be seen with the naked eye. In the sky, the object's apparent diameter is almost 20 times that of the Moon. For example, compared to the Andromeda galaxy, the Magellanic clouds are really easy to see wit...

Comments: 4 pcs

Orion

18.11.2022 at 01.00 - 02.30 - Gobur (V)
Tomi Kurri, Porin Karhunvartijat

Clear weather fell on a moonless night and I shot Orion with a 135mm lens. The star pattern familiar from here in Australia can be seen upside down in the northern sky. Thanks to the really dark shooting location (Bortle 2), a lot of deep sky objects were caught in the picture. The most famous are probably the Horse's Head Nebula, the Orion Nebula and the Witch's Nebula.

(20971) 1981 DR1

2.9.2022 at 22.23 - 23.17 - Orimattila, Artjärvi, Tähtikallio (I)
Kari Laihia, Toni Veikkolainen, Porin Karhunvartijat

(20971) 1981 DR1 (1981 DR1) A central main belt asteroid imaged on the first evening of 2022 DS days. When photographing Aquarius NGC 6772 bipolar planetary 12mag nebula, this object came into the picture. The Eunomia family asteroid was discovered by the American astronomer Schelte John "Bobby" Bus (b.1956) at the Australian Siding Spring Observatory on February 28, 1981. Bobby Bus has discovered a total of 1683 asteroids and comet 87P/Bus. Source Wikipedia https://en.wikipedia.org/wiki/Schelte_J._Bus . The size of the small asteroid is 3.73 km. Spectral class S according to the family. When ...

Images: 3 pcs • Comments: 2 pcs

(50734) 2000 EP153

2.9.2022 at 22.22 - 23.16 - Orimattila, Artjärvi, Tähtikallio (I)
Kari Laihia, Toni Veikkolainen, Porin Karhunvartijat

(50734) 2000 EP153 (2000 EP153) A mid-main belt asteroid imaged on the first evening of the 2022 DS days. When photographing Aquarius NGC 6772 bipolar planetary 12mag nebula, this object came into the picture. A Maria family asteroid was discovered by the NEAT discovery program at the Haleakala (608 – Haleakala-AMOS) observatory on March 6, 2000. The size of the small-sized asteroid is 3.06 km and the rotation speed is 7.972 h/r. Spectral class S according to the family. When photographing, the asteroid was at a distance of 1.5417au and at its closest on July 23, 2022 at 1.369au. Toni photogra...

Images: 3 pcs

Half-sky auroras

17.8.2022 at 23.15 - 00.30 - Laitila (III)
Pirjo Koski, Porin Karhunvartijat

This summer aurora gig turned out to be really challenging in terms of shape recognition. At that time, it was reasonably bright at night, and on top of that, a more or less full Moon seemed to climb into the sky during the filming. At night, maybe Steve etc. was seen on some aurora camera, because the undersigned got a call from Matias (thank you) on his cell phone in the middle of everything "look for Steve in the sky, there might be something there". The eye could see a slender pillar like Steve's, or a torch. It was really hard to say anything even on the spot, because there was so muc...

Images: 8 pcs

(2926) Caldeira

3.9.2022 at 03.16 - 03.37 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Toni Veikkolainen, Porin Karhunvartijat

(2926) Caldeira (1942 FL,1980 KG) A main belt inner rim asteroid imaged on the first evening of the 2022 DS days. While photographing the Peculiar Galaxy NGC 660 in Pisces, this object came into the picture. The Flora family asteroid was discovered by the Belgian astronomer Henri Debehogne (1928–2007) in Chile at the ESO La Silla observatory on May 22, 1980. Henri Debehogne has discovered more than 700 (727) asteroids in total. The first observations of this have been made in Turku as early as 1942 03 20.91612 (062-Turku). The asteroid is named after the Brazilian astronomer JFC Caldeira. The ...

Images: 3 pcs

(215188) 2000 NM

28.8.2022 at 22.44 - 22.53 - Orimattila, Artjärvi, Tähtikallio (II)
Kari Laihia, Porin Karhunvartijat

(215188) 2000 NM (2000 NM) Apollo NEO +1km asteroid imaged during the third evening of the 2022 August extra talcos. The asteroid was discovered by American amateur astronomer Leonard L. Amburgey Scott Observatory (823 – Fitchburg) on July 2, 2000. School teacher Leonard Amburgey has discovered a total of 2 asteroids in his backyard observatory in the town of Fitchburg in northern Worcester County, Massachusetts. Source Wikipedia https://en.wikipedia.org/wiki/Leonard_L._Amburgey . The entire estimate for the asteroid is 2.9km and rotation speed 9.24hr. Spectral class Spec_B=>Sr . When photogra...

Images: 3 pcs

(2105) Gudy

28.8.2022 at 23.07 - 23.16 - Orimattila, Artjärvi, Tähtikallio (III)
Kari Laihia, Porin Karhunvartijat

(2105) Gudy (1976 DA) A main-belt inner-edge asteroid imaged during the third evening of the 2022 August extra talcos. The asteroid was discovered by the German astronomer Hans-Emil Schuster at the ESO La Silla Observatory (809 European Southern Observatory, La Silla) on February 29, 1976. Hans Schuster has discovered a total of 25 asteroids and comets 106P/Schuster and C/1976 D2. The asteroid got its name from Hans-Emil Schuster's friend Gudrun Werner, who discovered this asteroid in the same blue survey plates as comet 1976c = 1975 II. [Ref: Minor Planet Circ. 4645]. We have imaged this ...

Images: 3 pcs

Vallis Capella

13.11.2022 at 03.18 - 04.24 - Harjavalta (IV)
Jari Kuula, Porin Karhunvartijat

An attempt to draw the Capella valley, but it was too late this time. The evening terminator had time to darken the bed, you can't really choose the timing like this in November! The length of Vallis Capella is stated to be 110 km, but old maps and my stray eye see it as at least double, up to Montes Pyrenaeus. In the morning of Father's Day, exploring the Moon was pleasant, our companion was at an altitude of 56 degrees. Picture 2 is a cell phone snap at 04:11.

Images: 2 pcs

A fireball at night, brighter than the venus

13.11.2022 at 19.33 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

Also pictures of this evening's (13.11.2022) fireball. Foggy and partly cloudy weather interfered with detection from the ground, but the Bear Camera was able to catch a trace of this ball as well...

A fireball at night, brighter than the venus

13.11.2022 at 05.52 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

Father's Day morning fireball. The time stamp shows that the flare was a few seconds short of 05:53. --- (a little 'bump' in the movement in this video as well -> let's focus on information technology)

Comments: 3 pcs

A fireball at night, brighter than the venus

13.11.2022 at 00.47 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

In addition to the observations in Pylkönmäki and Jyväskylä, this one as well. Stupid video, sorry about that...

A fireball at night, brighter than the venus

12.11.2022 at 20.25 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

A short-lived fireball over Pori ... approx. ~20:25:20 Around the constellation of Hercules

A fireball at night, brighter than the venus

12.11.2022 at 19.06 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

This fireball remained rather modest in the observations of the Bear Camera: a small puff behind the cloud gauze.

A fireball at night, brighter than the venus

12.11.2022 at 23.38 - Ulvila (III)
Vesa Puistovaara, Porin Karhunvartijat

Video clip of Saturday night's fireball

Comments: 4 pcs

Search result contains observations from time period 9.4.2021 klo 01.20 - 05.12.2022 klo 04.22.