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Malena Rice 17. ruj
How can we tie together our understanding of ISOs like and with disks+exoplanet statistics? If 'Oumuamua came from a DSHARP-like disk (below), we should be seeing a lot more ISOs in the coming years -- read all about it in my new Letter:
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Simon Porter 14. ruj
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Anton Petrov 13. ruj
Another confirmed object also known as spotted by an independent Gennady Borisov. More detail here:
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Paul Eremenko 12. ruj
First water on an planet in the habitable zone. Now an interstellar comet. What a week for astronomy. And what a time to be alive!
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Ernesto Guido 12. ruj
New Comet C/2019 Q4 (Borisov) (of possible interstellar origin; see previous tweet) just imaged (with the comet +25 degree on the horizon and the Sun -16 degree). Stacking of 13 unfiltered exposures, 90 seconds each with a 0.25-m f/3.4 reflector + CCD
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David Blanchflower 12. ruj
Whoever came up with this is a genius.
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الفلكي مُلهَم هندي 12. ruj
Odgovor korisniku/ci @MulhamH
تم تغير مسمى الزائر الغامض الجديد الذي أتى من بين النجوم من اسمه المرمز إلى اسم مكتشفه ( Gennadii Borisov) ليصبح اسمه العلمي C/2019 Q4 (Borisov) لاتحتاج السماء لملايين الأموال من أجل أن تكتشف شيء جديد .. يحتاج معدات مناسبة وصبر في المتابعة صورة المُكتشف ومعداته
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GreatAmericanEclipse 12. ruj
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Dave Dickinson 11. ruj
There it is. Interstellar suspect is now C/2019 Q4 Borisov. There was some confusion earlier today as to which new object was being referenced. It does indeed have an eccentricity greater than 1.0 (3.5). One to watch, too bad its soooo faint.
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Tony Dunn 11. ruj
is now recognized as a hyperbolic comet called C/2019 Q4. /2019Q$ Here is a simulation of its hyperbolic trajectory through our solar system. It will run in your browser.
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Ernesto Guido 11. ruj
MPEC is out for new comet C/2019 Q4 (Borisov). Based on available obs the orbit solution converged to hyperbolic elements that would indicate an interstellar origin. More obs are very desiderable. Congrats to Gennadii V. Borisov for this discovery
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Simon Porter 11. ruj
Formal announcement of Comet C/2019 Q4 Borisov, aka
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Simon Porter 11. ruj
Alright, after fixing a few things in my code to more properly handle hyperbolic orbits, I now get for potential interstellar object an eccentricity of ~3.0, in line with other estimates. That means a solar system approach velocity of ~30 km/s!
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Becky Smethurst 11. ruj
Lost of discussion about whether this new object is an asteroid or another interstellar object passing through our Solar System like 'Oumuamua did in 2017 Excited to see more and more observations roll in over the next few weeks to try and pin this down 🤓👏
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الفلكي مُلهَم هندي 11. ruj
Odgovor korisniku/ci @MulhamH
يذكر أن أول زائر من خارج المجموعة الشمسية يكتشف أثار كثير من الأسئلة حوله خاصة في شكله وزيادة في سرعته مما جعل البعض يعتقد أنها مركبة فضائية. أما فيعتقد العلماء أنه سيعطينا معلومات أفضل بسبب حجمه ورصدنا له قبل ان يدخل مجموعتنا ستكون دراسة أجسام مابين نجوم ثرية
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الفلكي مُلهَم هندي 11. ruj
هاوي فلكي أوكراني يلفت أنظار علماء الفلك بإكتشافه جسم آتي إلينا من فضاء مابين النجوم الجسم الذي أطلق عليه اسم يُعتقد من التحليل الاولي أنه مذنب وقطره حوالي ١٠كلم ومساره يفترض أن يصل لاقرب مسافة للشمس في ديسمبر ثم يغادر يعتبر هذا ثاني زائر يكتشف من خارج مجموعتنا الشمسية
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Maik Meyer 11. ruj
: A Thread: I am doing (initial) orbit determinations of minor bodies since about 20 years. I may call myself a pupil of Brian G. Marsden, who always was conservative with initial orbits and assumed e=1 for comets when the nominal solutions were +-5% around 1. 1/10
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Jason Major 11. ruj
An amateur Ukranian astronomer has discovered what could be another interstellar object (like 'Oumuamua) on a hyperbolic trajectory through our solar system. is ~10km across and will come as close as 1.86 AU to Earth in December.
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David Blanchflower 11. ruj
From the available data there are indications is an Interstellar object but much more observations are required to confirm it. I've got my fingers crossed astronomically speaking. I've got all my doings crossed unastronomically speaking 😉
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Jonathan O’Callaghan 11. ruj
Here's a remarkable animation of , which may be our second known interstellar visitor, taken by astronomer Gennady Borisov - who discovered the object. 2l/Borisov, perhaps? (source: )
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