... AAS 225 . ... Here are a few features of the tweets from the 225th meeting of the American Astronomical Society . ... The retweet numbers are close to the values that Twitter has for the tweets, which means that I can't have messed up too much (I wouldn't expect perfect agreement since Twitter does not guarantee that any search will return all matching tweets; also, the Twitter values are updated whereas mine are fixed until the next set of tweets gets analyzed). The most re-tweeted accounts. ...

... Prompt and Follow Up Observations of Gamma-Ray Bursts . ... Video weather at MASTER-Domodedovo . Video weather at MASTER-Kislovodsk . ... Survey data . GCN sites and links . ... GCN . ... Conus data . HETE data . ... Weather . ... Last SN . Last SN: full list . Comet Observation Home Page . Gaia Science Alerts Working Group . ... The Earth-Orbiting Space Junk Tracking Page . ... GCN Circulars . ... Internet observations . Hete pointing direction . ...

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

... Tonight's Sky . ... 50 Greatest Mysteries . ... Accurate distance measurement resolves major astronomical mystery . Astronomers have resolved a major problem in their understanding of a class of stars that undergo regular outbursts, called dwarf novae, by accurately measuring the distance to SS Cygni. ... Astronomers have resolved a major problem in their understanding of a class of stars that undergo regular outbursts by accurately measuring the distance to a famous example of the type. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Earth Satellites . ... According to Velikovsky, about 4000 years ago a giant volcano on Jupiter erupted and spewed a vast glob of debris into space, leaving the Great Red Spot behind as a permanent scar. The red hot lump ejected from Jupiter (referred to as a comet by Velikovsky) wandered into the inner Solar System, repeatedly crossing the Earth?s orbit and in fact often passing close to our helpless planet in the following millennia. ...

... The task clearly needs to know the direction in space of the focal axis of the relevant instrument at the time of the observation of interest. There are three necessary pieces of information: the name of the instrument, the date-time of the observation and the spacecraft pointing direction (attitude) at this time. ... There are two ways to pass the `cal' information to esky2det , governed by the parameter calinfostyle : . ...

EPHEMERIDES OF MINOR PLANETS . The yearbook "Ephemerides of minor planets" (published since 1948) contains information on orbital elements of numbered minor planets and the circumstances of their observations during the best observation periods. ... orbital elements of 430405 minor planets, numbered as of March 5, 2015 and dates of their oppositions in 2016; . ... opposition ephemerides of minor planets; . ... information on the "Updated Ephemerides of Minor Planets" service; . ...

Astronomical Data Center . ... You can access the files described here in three ways: . ... Use CDS' VizieR Service at ADC to explore the data files. ... Get the data files via anonymous FTP. ... 1981) -------------------------------------------------------------------------------- Byte-per-byte Description of file : table1a Byte-per-byte Description of file : table1b -------------------------------------------------------------------------------- Bytes Format Units Label Explanations ...

... Cross-shaped galaxy ZGC 2315+03 (Fig.1) has been described by Zwicky (1971) as ``post-eruptive or the result of the crossing of a compact galaxy through an edge-on spiral'' . This object was included in the Polar-Ring Catalog (C-71) by Whitmore et al. (1990) as a possible candidate for Polar-Ring Galaxies (PRG). ... One of them is galaxy 'disk' and the other is 'polar-ring'. ... The facts against the polar-ring nature of ZGC 2315+03 can be summarized as follows: . ...

Astronomy Department was found in Kyiv University in 1834 together with other twelve departments of the Faculty of Philosophy. ... At that time V.Struve was a World famous astronom, and helped V.Fedorov in creation of Kyiv University Astronomical Observatory. ... M.Khandrikov successfuly modernized the Observatory. ... Researches of the history of Kyiv Observatory say about an important contribution into development of orbits theory made by the famous Kyiv astronoms I.Illinsky and I.Putilin. ...

... This glossary is not meant to be an exhaustive list of techno-definitions. ... Is there a term you don't see here? ... Do you know how to pronounce the CONSTELLATIONS , STARS , or the PLANETS and their MOONS ? ... First Law - the orbit of each planet is an ellipse with the sun at a focus . ... LIGHT BUCKET: A common slang term for a large apertures . ... LIGHT POLLUTION: The illumination of the night sky caused by artificial light sources on the ground (streetlights, billboards, etc.) ...

. Home . Structure of Data . Description . Catalog . Publications . VO . ЮБ 2000 . 23:56:37.5 . ЮД 2000 . +61:24:02 . l . 116.420 . b . -0.776 . diameter . 4.0' . (m - M) 0 . 12.2 0.17 . distance . 2750 220 pc . E(B - V) . 0.49 0.02 . log(t) . 8.2 0.05 . SAO 1-m, BVRI observations (777 measurements) VOTable . 2MASS data VOTable . IPHAS IDR data VOTable . Developed by the Team . Send us your questions or feedback

... Contact A Problem of an estimation of accuracy of the asteroid CCD observations . The Minor Planet Center supported by the Interntional Astronomical Union is the main office for keeping observational data of the small Solar System bodies and their investigations. ... At Pulkovo Observatory we are estimating an accuracy of the CCD asteroid observations obtained by amateurs and professional astronomers all over the World using the MPC database. ...

OBSERVATIONS OF COORBITAL SATELLITES OF SATURN Emel'yanov N., Varfolomeev M. Sternberg State Astronomical Institute, Moscow, e-mail : emelia@sai.msu.ru Institut de MИcanique CИleste et de Calcul des иphИmИrides, Paris, e-mail : emelia@imcce.fr Abstract. To improve the orbital parameters and masses of coorbital satellites of Saturn, Janus and Epimetheus, new observations of these satellites are necessary. ... IN: Saturn. ... New observations of Saturn's coorbital satellites" - Icarus. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

ISSN 0236-2457 . Sincerely yours . Georgij Rudnitskij . Editor-in-Chief . gmr@sai.msu.ru . visit since March 12, 2010.

. IKI follow-up GRB team . Crimean Astrophysical Observatory . Special Astrophysical Observatory . Contact information | IKI main page .

... The software systems are described following the forward and back­ ward data flow to/from the satellite: starting from the Observation Pro­ posal reception and archiving, the long term observation scheduling up to the detailed weekly planning and telecommands sequence uplinking, and vice versa the scientific and housekeeping raw telemetry acquisition and archiving, quick look data analysis, data reformatting and distribution as a Final Observation Tape to the Observation Proposal PI. ...

Posting Observations . ... You will need to subscribe to vsnet-acc (to allow you access to post your observations). ... VSNet has several different e-mail sigs, and sub sigs. ... These list are controlled by a software package called " Majordomo ", which allows you to subscribe and unsubscribe yourself from these list with an e-mail message (automated). ... Once you have subscribed to vsnet-acc (which will only send you a welcome message back and nothing else) you can post to the other list. ...

P.N. Lebedev Physical Institute Astro Space Center Russian Academy of Sciences S.A. Lavochkin Association, Roscosmos RADIOASTRON The Ground ­ Space Interferometer: radio telescope much larger than the Earth The Spectr-R Project http://www.asc.rssi.ru/ radioastron / High- Resolution HI 21 cm Mosaic of M 33 galaxy GENERAL OUTLINE The RadioAstron ... Such forecast could be used to prepare a long time-scale schedule of scientific observations. ...