Trending
Pedro Bernardinelli's Avatar

Pedro Bernardinelli

@pbernardinelli.com

Professor of astronomy @ University of São Paulo, PhD from Penn, formerly at UW. Discoverer of minor planets and C/2014 UN271, Brazilian, coffee dependent, geek. He/him/ele, pt-br/en

132
Followers
147
Following
64
Posts
19.12.2023
Joined
Posts Following

Latest posts by Pedro Bernardinelli @pbernardinelli.com

I am so sorry for your loss, Michele 💔

09.03.2026 17:08 👍 2 🔁 0 💬 0 📌 0

The guidelines of the hipster coffee shop union say you gotta shave your head and/or mustache now (or start wearing a toupee if bald). Sorry, I don't make the rules

27.02.2026 14:23 👍 2 🔁 0 💬 0 📌 0
Post image

Bye, Seattle!
For those who didn’t know: as of today I’m moving out of the US to start a faculty job at the University of São Paulo, in Brazil. I’m excited to be back home, but it’s sad to leave this amazing region of the US

15.01.2026 17:41 👍 3 🔁 0 💬 0 📌 0

Oh gods…

15.11.2025 05:37 👍 6 🔁 0 💬 0 📌 0

Oh god……

15.11.2025 05:35 👍 4 🔁 0 💬 0 📌 0

Hello! I'm the grad program coordinator and past admissions chair summoned to answer your questions.
It is a multi-part decision (one many departments are currently navigating.) For us, we got an awesome class last year that was larger than our larger than our target by ~x2.

09.10.2025 17:25 👍 18 🔁 3 💬 1 📌 0
Graduate Admissions | Department of Astronomy | University of Washington The Department of Astronomy has  suspended graduate admissions for the 2026-2027 Academic Year. General Information for applying to UW Astronomy Graduate Program. Applications must be submitted using ...

Sad to see the University of Washington Astronomy Department has suspended graduate admissions for the 2026-2027 Academic Year. astro.washington.edu/graduate-adm...

07.10.2025 19:48 👍 53 🔁 28 💬 2 📌 9
Postdoctoral Scholar - Institute for Data Intensive Research in Astrophysics & Cosmology | American Astronomical Society We invite applications for the 2026 DiRAC Fellowship in the Department of Astronomy at the University of Washington. These up to 3-year full time postdoctoral positions are available to promising earl...

On the 🔭🧪 postdoc job market? Excited about science with Rubin and big surveys? Come join us at DiRAC. I’m so excited that we’re able to offer a few of these Fellowship positions this year!

Please share, LMK if you have Q’s!

aas.org/jobregister/...

17.09.2025 05:02 👍 34 🔁 20 💬 1 📌 1
Preview
51 Pegasi b Fellowship The 51 Pegasi b Fellowship provides exceptional postdoctoral scientists with the opportunity to conduct theoretical, observational, and experimental research in planetary astronomy.

Are you looking graduating and looking for fellowship opportunities? The UW is a host institution for 51 Peg b!

Applications are open now, and due October 3rd.

We have faculty available in multiple departments available to host, across subfields in Planetary Science. Reach out for more info!

08.09.2025 19:26 👍 4 🔁 9 💬 0 📌 0

Cool thread with one of my favorite plots of all time!

15.08.2025 02:03 👍 2 🔁 2 💬 1 📌 0
Preview
NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1) We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS), with the NSF-DOE Vera C. Rubin ...

It's paper day! The first science paper with data from @vrubinobs.bsky.social's survey camera, the mighty LSSTCam, is a VERY quick turnaround of Rubin's observations thus far of interstellar comet 3I/ATLAS. ☄️
Chandler et al., submitted 🔭
A 🧵

21.07.2025 05:28 👍 157 🔁 45 💬 5 📌 11
Post image

Lots of science aside, I love this (unintentionally!) out of focus image of 3I taken on June 24

21.07.2025 01:32 👍 3 🔁 0 💬 1 📌 0
Preview
NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1) We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS), with the NSF-DOE Vera C. Rubin ...

New paper on arXiv, analyzing Rubin Observatory data of interstellar object 3I/ATLAS. This is the first science paper with data from LSSTCam!!!!!

arxiv.org/abs/2507.13409

21.07.2025 01:29 👍 61 🔁 17 💬 1 📌 2

Cool! Very happy to see this out. Looking forward to reading it when I don’t have hundreds of Slack messages to go through ;)

15.07.2025 12:41 👍 1 🔁 0 💬 0 📌 0

That was quick!

04.07.2025 01:37 👍 2 🔁 0 💬 0 📌 0

Half of our timeline: “Oh sh…. How did you hack my overleaf?!?!?!?”

02.07.2025 14:20 👍 2 🔁 0 💬 0 📌 0

Oh look, a point source!

02.07.2025 13:00 👍 3 🔁 0 💬 1 📌 0
Rubin Observatory beneath the vibrant blue sky of twilight. The observatory is a boot-shaped structure at center, with long white service building and vertical silver dome. The thin, faint streak of a comet appears to the left of the observatory. Text reads "New citizen science project using NSF–DOE Rubin Observatory data. Introducing: Comet Catchers. Join the hunt for comets in Rubin data!"

Rubin Observatory beneath the vibrant blue sky of twilight. The observatory is a boot-shaped structure at center, with long white service building and vertical silver dome. The thin, faint streak of a comet appears to the left of the observatory. Text reads "New citizen science project using NSF–DOE Rubin Observatory data. Introducing: Comet Catchers. Join the hunt for comets in Rubin data!"

Think you can spot a comet? ☄️

Try your eye with the *very first* citizen science project on @zooniverse.bsky.social that uses data from NSF-DOE Rubin Observatory, Comet Catchers! 🔭🧪

We can't think of a more fitting project for #AsteroidDay 🤩

☄️ cometcatchers.net ☄️

30.06.2025 20:51 👍 67 🔁 27 💬 1 📌 6
A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. The image focuses on a collection of interacting galaxies connected by delicate streams of stars. At top center lies a large elliptical galaxy that is dense and smooth, like a polished stone glowing with golden light. Like delicate spider silk or stretched taffy, these stellar bridges link the large elliptical to the few larger galaxies beneath, evidence of past collisions.

All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. The image focuses on a collection of interacting galaxies connected by delicate streams of stars. At top center lies a large elliptical galaxy that is dense and smooth, like a polished stone glowing with golden light. Like delicate spider silk or stretched taffy, these stellar bridges link the large elliptical to the few larger galaxies beneath, evidence of past collisions. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

A cosmic tapestry of glowing tan and pink gas clouds with dark dust lanes. In the upper right, the Trifid Nebula resembles a small flower in space. Its soft, pinkish gas petals are surrounded by blue gas, and streaked with dark, finger-like veins of dust that divide it into three parts. It radiates a gentle, misty glow, diffuse and soft like the warmth of breath on a cold hand. To the lower left, the much larger Lagoon Nebula stretches wide like a churning sea of magenta gas, with bright blue, knotted clumps sprinkled throughout where new stars are born. Both nebulae are embedded in a soft tan backdrop of gas that is brighter on the left than on the right, etched with dark tendrils of dust and sprinkled with the pinpricks of millions of stars.

A cosmic tapestry of glowing tan and pink gas clouds with dark dust lanes. In the upper right, the Trifid Nebula resembles a small flower in space. Its soft, pinkish gas petals are surrounded by blue gas, and streaked with dark, finger-like veins of dust that divide it into three parts. It radiates a gentle, misty glow, diffuse and soft like the warmth of breath on a cold hand. To the lower left, the much larger Lagoon Nebula stretches wide like a churning sea of magenta gas, with bright blue, knotted clumps sprinkled throughout where new stars are born. Both nebulae are embedded in a soft tan backdrop of gas that is brighter on the left than on the right, etched with dark tendrils of dust and sprinkled with the pinpricks of millions of stars.

A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. To the lower left is a region filled with the hundreds of golden glittering gems of a distant galaxy cluster. In the foreground, below and right of center, two blue spiral galaxies look like eyes beneath the entangled mass of a triple galaxy merger in the upper right. A few bright blue points of foreground stars pierce the glittering tapestry.

All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

A sprawling, textured field of galaxies scattered across the deep black of space. It is filled with the delicate smudges and glowing cores of galaxies of many shapes, sizes and colors, as well as the bright multi-colored points of stars. To the lower left is a region filled with the hundreds of golden glittering gems of a distant galaxy cluster. In the foreground, below and right of center, two blue spiral galaxies look like eyes beneath the entangled mass of a triple galaxy merger in the upper right. A few bright blue points of foreground stars pierce the glittering tapestry. All throughout the image, thousands of galaxies gather in clusters or are spread throughout, like glittering gems strewn on a table. Some are sharp-edged and spiral, like coiled ribbons; others round and diffuse, like polished pebbles. Still others are just smudges of various colors against the black of space. The background is peppered with pinpoint stars in reds, yellows, and blues, crisp against the velvet black.

Introducing...your sneak peek at the cosmos captured by NSF–DOE Vera C. Rubin Observatory!

Can you guess these regions of sky?

This is just a small peek...join us at 11am US EDT for your full First Look at how Rubin will #CaptureTheCosmos! 🔭🧪

#RubinFirstLook
ls.st/rubin-first-look-livestream

23.06.2025 04:06 👍 701 🔁 332 💬 22 📌 105

[space coven]
Mary Robinette Kowal: listen up, boys!
Kowal: I've got a story for you... the story of the lady astronaut!
Kowal: that's right
Kowal: a lady wants to be an astronaut
Kowal: how about that?!

07.06.2025 16:20 👍 390 🔁 73 💬 4 📌 22

Always great to see wide coverage of our papers!

05.06.2025 17:03 👍 0 🔁 0 💬 0 📌 0
The glowing, dense band of stars of our home Milky Way galaxy appears to spill across the image from the open dome slit of Rubin Observatory at bottom right.

The glowing, dense band of stars of our home Milky Way galaxy appears to spill across the image from the open dome slit of Rubin Observatory at bottom right.

The sky doesn’t wait—and neither will we!💨

NSF–DOE Rubin Observatory has an automated scheduler that takes into account current weather conditions, moon phases, and observatory capabilities to determine the best next place to point the telescope. 🌙 #CaptureTheCosmos

🔭🧪
📷: P. Assunção Lago (Rubin)

04.06.2025 20:40 👍 78 🔁 13 💬 1 📌 0
Post image

The best part of the main sorcha paper is the Acknowledgements section ( @megschwamb.bsky.social , I had forgotten we had this paragraph!)

04.06.2025 18:42 👍 0 🔁 0 💬 0 📌 1
Preview
Sorcha: Optimized Solar System Ephemeris Generation Sorcha is a solar system survey simulator built for the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) and future large-scale wide-field surveys. Over the ten-year survey, the LSST...

And, finally, our approach to optimize ephemerides calculations: arxiv.org/abs/2506.02140

04.06.2025 17:46 👍 1 🔁 1 💬 1 📌 0
Preview
Sorcha: A Solar System Survey Simulator for the Legacy Survey of Space and Time The upcoming Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory is expected to revolutionize solar system astronomy. Unprecedented in scale, this ten-year wide-field survey will c...

The main paper describing Sorcha: arxiv.org/abs/2506.02804

04.06.2025 17:45 👍 0 🔁 0 💬 1 📌 0
Preview
Predictions of the LSST Solar System Yield: Discovery Rates and Characterizations of Centaurs The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will start by the end of 2025 and operate for ten years, offering billions of observations of the southern night sky. One of its ma...

arxiv.org/abs/2506.02779 for @astjoephysics.bsky.social ‘s simulations of Centaurs

04.06.2025 17:45 👍 0 🔁 0 💬 1 📌 0
Preview
Predictions of the LSST Solar System Yield: Near-Earth Objects, Main Belt Asteroids, Jupiter Trojans, and Trans-Neptunian Objects The NSF-DOE Vera C. Rubin Observatory is a new 8m-class survey facility presently being commissioned in Chile, expected to begin the 10yr-long Legacy Survey of Space and Time (LSST) by the end of 2025...

And also, four papers on arXiv! arxiv.org/abs/2506.02487 for our simulations of near Earth objects, main belt asteroids, Jupiter Trojans and trans-Neptunian objects

04.06.2025 17:44 👍 3 🔁 0 💬 1 📌 0

How many objects of your favorite (main) Solar System population will @vrubinobs.bsky.social discover? See thread for the answer and sorcha.space for more details

04.06.2025 17:42 👍 7 🔁 3 💬 2 📌 0
Save-the-date graphic for the worldwide "First Look" at Rubin Observatory first revealed images. Text reads, "Save the date! June 23, 2025. NSF–DOE Rubin Observatory First Look"

Save-the-date graphic for the worldwide "First Look" at Rubin Observatory first revealed images. Text reads, "Save the date! June 23, 2025. NSF–DOE Rubin Observatory First Look"

🚨 SAVE THE DATE: The world's First Look at images from NSF–DOE Rubin Observatory is coming June 23, 2025! 🔭🧪

Get ready for a preview of how Rubin will soon #CaptureTheCosmos in its decade-long survey 🌌

More details soon—stay up to date at rubinobservatory.org/news/rubin-first-look

23.05.2025 16:10 👍 104 🔁 44 💬 4 📌 18
Preview
Discovery of a dwarf planet candidate in an extremely wide orbit: 2017 OF201 We report the discovery of a dwarf planet candidate, 2017 OF201, currently located at a distance of 90.5 au. Its orbit is extremely wide and extends to the inner Oort cloud, with a semi-major axis of ...

Cool paper on arXiv: arxiv.org/abs/2505.15806

I for a minute thought this was DES data and I missed it, but it’s not

22.05.2025 02:20 👍 9 🔁 2 💬 0 📌 0