#astrometry — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #astrometry, aggregated by home.social.
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New in the #VirtualObservatory: “CAFOS DR1 point photometric catalog” by Cortes-Contreras M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/521/3127
#Astrometry #SloanPhotometry #OpticalObservation #Catalogs -
New in the #VirtualObservatory: “HASH. The Hong Kong/AAO/Strasbourg Ha PN DB” by Parker Q.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/V/163
#Astrometry #SupernovaRemnants #Surveys #WhiteDwarfStars -
New in the #VirtualObservatory: “SMaSH+ physical properties of O-Stars pairs” by Tramper F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/711/A236
#StellarDistance #OStars #Astrometry #Interferometry -
New in the #VirtualObservatory: “NETS. II. RV & astrometry of 7 star systems” by Giovinazzi M.R. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/52
#Spectroscopy #VisibleAstronomy #InfraredAstronomy #Astrometry -
New in the #VirtualObservatory: “HECATE nearby galaxies stellar properties” by Kovlakas K. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/506/1896
#Redshifted #RadialVelocity #GalaxyClassificationSystems #Astrometry -
New in the #VirtualObservatory: “Galaxy Zoo barred galaxies properties with MaNGA” by Geron T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/521/1775
#GalaxyRadii #Astrometry #Redshifted #Galaxies -
New in the #VirtualObservatory: “NESSI: resolving wide binaries in Gaia & SUPERWIDE” by Hartman Z.D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/91
#Photometry #MultipleStars #Astrometry #ProperMotions -
New in the #VirtualObservatory: “ALMA observations counterparts of SDSS dr14Q” by Wong A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/523/23
#VisibleAstronomy #Photometry #Spectroscopy #Astrometry -
Ho integrato lo spazio profondo nella mia dashboard di Home Assistant! #APOD della #NASA, posizione della #ISS e lanci spaziali live. Con REST sensor, API e multiscrape, il tuo pannello domotico può diventare una finestra sul #cosmo. Voi cosa ne pensate? #HomeAssistant #automazione
https://gabrielebaldassarre.com/home-assistant/dashboard-astrometria-parte-3/
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New in the #VirtualObservatory: “AST3-2 SN point source automatic survey” by Yang X. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/520/5635
#Supernovae #Photometry #Astrometry #Exoplanets -
New in the #VirtualObservatory: “The gamma/optical flares of 4FGL-DR3 blazars” by De Jaeger T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/519/6349
#Galaxies #GammaRayBursts #Redshifted #Astrometry -
New in the #VirtualObservatory: “Properties of new members in stellar group ASCC 127” by Wang F. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/24
#StarFormingRegions #Astrometry #RadialVelocity #ProperMotions -
New in the #VirtualObservatory: “New ASAS-SN variable stars using g band lcs” by Christy C.T. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/519/5271
#Photometry #Astrometry #VisibleAstronomy #AstronomicalObjectIdentification -
New in the #VirtualObservatory: “Accretion diagnostics with JWST/MIRI of YSOs” by Shridharan B. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/708/A22
#StellarDistance #StellarMassLoss #Extinction #Astrometry -
New in the #VirtualObservatory: “Rotation-based census of blue lurkers” by Jadhav V.V. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A275
#MilkyWayGalaxy #OpenStarClusters #Astrometry #UltravioletAstronomy -
New in the #VirtualObservatory: “Gaia DR3 eclipsing binaries light curves SSA” by GAIA Collaboration
https://skvo.science.upjs.sk/gaiadr3_eb/q/ssa/info
#LightCurves #Surveys #Astrometry #VariableStars -
New in the #VirtualObservatory: “Gaia DR3 EB Cone Search” by GAIA Collaboration
https://skvo.science.upjs.sk/gaiadr3_eb/t/gdr3cone/info
#Astrometry #Surveys #VariableStars -
New in the #VirtualObservatory: “SMGPS cross-matched with eROSITA/ROSAT and GaiaDR3” by Egbo O.D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A193
#Astrometry #VisibleAstronomy #XRaySources #RadioSources -
New in the #VirtualObservatory: “Discovery of bright z~=7 LBGs in Euclid COSMOS” by Varadaraj R.G. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A239
#Galaxies #Astrometry #Redshifted #AbsoluteMagnitude -
New in the #VirtualObservatory: “ALMACAL IX calibrators for DSFGs/SMGs sources” by Chen J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/518/1378
#Astrometry #Quasars #RadioSources #SubmillimeterAstronomy -
New in the #VirtualObservatory: “H I gas properties in paired galaxies with WALLABY” by Kim S.-J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/519/318
#GalaxyKinematics #RadialVelocity #Astrometry #Spectroscopy -
New in the #VirtualObservatory: “Lensing/SED-fit of 78 high-z RELICS galaxies” by Neufeld C. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/516/2162
#Astrometry #StellarMasses #Galaxies #GravitationalLensing -
New in the #VirtualObservatory: “Tidal tails of nearby open clusters” by Risbud D. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/694/A258
#OpenStarClusters #MilkyWayGalaxy #VisibleAstronomy #Astrometry -
New in the #VirtualObservatory: “Bar morphologies of HSC-SSP disc galaxies” by La Marca A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A152
#InteractingGalaxies #ActiveGalacticNuclei #Astrometry #InfraredPhotometry -
New in the #VirtualObservatory: “Isolated single-pulse pulsar candidates” by Houben L.J.M. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A10
#RadioSources #Pulsars #Astrometry #GalaxyKinematics -
New in the #VirtualObservatory: “MUSE M33 HII regions catalog” by Feltre A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/706/A367
#VisibleAstronomy #Astrometry #Extinction #ChemicalAbundances -
New in the #VirtualObservatory: “Phoebe precise CCD positions using Gaia DR3” by Wang N. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/PSS/271.07240
#SolarSystem #SolarSystemPlanets #Astrometry -
New in the #VirtualObservatory: “Zorro/Gemini-South astrometric data of binary stars” by Mendez R.A. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/226
#Astrometry #InfraredPhotometry #MultipleStars #Orbits -
New in the #VirtualObservatory: “Binaries orbital parameters comparison with Gaia DR3” by Ding Ye et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/211
#Astrometry #MultipleStars #Orbits #TrigonometricParallax -
Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Third Interstellar Object Discovered
https://minorplanetcenter.net/mpec/K25/K25N12.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
New dwarf planet found in our solar system
https://www.minorplanetcenter.net/mpec/K25/K25K47.html
#ycombinator #astrometry #observations #orbits #minor_planets #asteroids #comets #near_earth_objects #potentially_hazardous_asteroids -
Does anyone have an alternative to Astrometry.net? It appears to be down right now.
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Inktober 52 2025 - Week 4 - 'Aquarius'
Combining the Lunar new year animal with the star sign it's rising from!
#inktober #inktober52 #snake #aquarius #water #stars #starsign #constellation #zodiac #astrology #astrometry -
Join us as we dive into the fascinating world of radio astronomy at the Hartebeesthoek Radio Astronomy Observatory in South Africa. From its NASA origins to cutting-edge VLBI technology,discover how HartRAO plays a crucial role in space exploration and precision measurements of celestial objects.
https://webgal.nemethstarproductions.eu/index.php?/category/ep01-hartrao (CC-BY 4.0)
#SpaceFridayPhotography #HartRAO #Hartebeesthoek #RadioAstronomy #SpaceScience #Astronomy #Astrometry #SpaceExploration #BlueSkyScience #SouthAfrica #Johannesburg
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Here is a lesser-known nebula: #NGC6820, and the open cluster #NGC6823 .
This shot covers about 1 degree by 1.5 degrees, and is the result of about five hours of data collection over the course of three nights, using two #DwarfII smart telescopes.
1 hour's worth is without any filters, 1 hour is with a Svbony CLS light pollution filter, and 3 hours with a OIII/HII filter.
Then I fed the 1237 frames into #Siril and started crunching numbers. 72 frames were not usable, leaving me with 1165. These I stacked, and then ran through the "Hubblematic" #HubblePalette emulator and DSA Star Reduction scripts. Finally I did some additional reprocessing and smoothing with #GooglePhotos.
Most images of the area cover the cluster, rather than the rather large area of nebulosity that surrounds it, and just concentrate on the (admittedly very pretty) nebula around the cluster. This shot covers a much wider field, and even it does not show the true extent of this faint but magnificent region.
#Astrometry by Astrometry.net .
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Earth orientation parameters (Earth 🌍)
In geodesy and astrometry, earth orientation parameters describe irregularities in the rotation of planet Earth. EOP provide the rotational transform from the International Terrestrial Reference System to the International Celestial Reference System, or vice versa, as a function of time. Earth's rotational velocity is not constant over time.
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Images of the lowest-mass extrasolar #planet ever discovered that has both a direct mass measurement and an orbit similar to the giant planets in our own solar system.
It’s also among the first ever discovered using a technique called #astrometry, which relies on subtle movements of a host #star over many years.
The planet is about three times the mass of #Jupiter orbiting AF Leporis, a young sun-like star about 87.5 light years away.
#astronomy #exoplanets
https://mcdonaldobservatory.org/news/releases/20230622 -
Long article on the combined #exoplanet hunting method from the previous post in the thread: https://www.expressnews.com/business/article/hunting-planets-san-antonio-astrophysicist-uses-18090895.php - the first author "says combining #astrometry and direct imaging strategies should lead to the discovery of more exoplanets — and he’s already been reviewing data from #Gaia and Hipparcos to get a bead on more catalogued stars with orbiting companions."
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@greggadams I suspected #Pixel7 was making a lot of these #stars up while losing many others in #computationalphotography #postprocessing cleanup, so I took the liberty of running your photo through an online #astrometry tool. Well, after giving it a decently thorough try of over 10 minutes, it failed to identify the part of the sky your photo shows https://nova.astrometry.net/status/6992627 I mean it's a nice looking photo, it just doesn't align particularly well with reality.
One thing that bugged me the most with it is that it made all the stars the same colour and there's a sudden cutoff at a certain apparent magnitude of stars in the clearest portion of the sky where there should be more fainter stars visible than behind the clouds, and yet it's exactly the opposite in your photo.
I'm attaching a quick test of a similar scene but using a "dumb" #Canon #R6 for comparison (just using a kit lens, wanted to see how well it'd do). Astrometry tool identified the #starfield in 50s https://nova.astrometry.net/status/6992748
I guess we'll have to invent new branch of #ethics with "computational photography" just as we're overdue having one for #AI generated contents like #ChatGPT, #DALLE or similar. :breadthink: #FoodForThought
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Constraints for the orbital #inclination and the true mass of long-period single companions.
This work illustrates how #Gaia and #Hipparcos allow for the orbital properties and masses of long-period RV companions to be further constrained.
The first constraints for nearby long-period #planets from Gaia have started getting published.
#astronomy #exoplanets #radialvelocity #astrometry
https://arxiv.org/abs/2301.01263 -
Stellar and substellar companions from Gaia EDR3.
According to this new paper, #Gaia #astrometry sensitivity would be just enough to independently verify the existence of Proxima c.
Although the existence is in serious doubt, Gaia could help resolve the situation by providing a clear detection or by ruling out the existence of the planet.
#astronomy #exoplanets #Proximab
Paper by Kervella et al (2022): https://arxiv.org/abs/2109.10912
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"HIP 99770 b is the first #exoplanet ever discovered jointly through direct imaging and #astrometry and the first discovery leveraging on μ-arcsecond precision #Gaia astrometry": https://arxiv.org/abs/2212.00034
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A detection of a superjovian #exoplanet around the dusty A star HIP 99770 using precision #astrometry and direct imaging.
The #planet HIP 99770 b is in a low-eccentricity orbit 16.9 au from the primary, receiving about as much light as #Jupiter does from the Sun.
This discovery is a proof-of-concept for a fundamentally new strategy for finding imageable planets: selecting targets based on dynamical evidence from indirect methods like astrometry.