. Information for database users . Go to previous page . Description and abbreviations (minor planets) . Description and abbreviations (planets and satellites) . Information about observations . List of publications .

O.R. Hainaut, ESO, H. Boehnhardt, MPS, and S. Protopapa, UMd . ... These pages contains photometric information on Minor Bodies in the outer Solar System, i.e. comets, transneptunian objects, centaurs and trojans. ... The methods used are described in detail in the companion paper, Hainaut, Boehnhardt Protopapa (2012), which is an update of the original paper on this topic, by Hainaut Delsanti (2003). MBOSS-2: reference paper . O.R. Hainaut, H. Boehnhardt S. Protopapa (2012) . ... Full PDF . ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

The basic problems of the Laboratory are connected with researches of dynamics of minor planets and comets. ... THE ORBIT IMPROVEMENT of minor planets from optical and radar observations, . the utilization of minor planet observations for THE DETERMINATION OF ORIENTATION OF STAR CATALOGUES and DETERMINATION OF MASSES OF MINOR PLANETS BY DYNAMICAL METHOD, . THE ESTIMATION OF COLLISION PROBABILITY of minor planets with other bodies and with each other, . ...

... 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. ...

CHIANTI - an atomic database for emission lines. ... K.P.Dere, E.Landi, H.E.Mason, B.C.Monsignori-Fossi, P.R.Young, 1997, A , 125, 149 . Article: Available from ADS . The Arcetri Spectral Code for thin plasmas . E.Landi M.Landini 1998, A , 133, 1 . ... E.Landi, M.Landini K.P.Dere, P.R.Young, H.E.Mason, 1999, A , 135, 339 . ... K.P.Dere, E.Landi, P.R.Young, G.Del Zanna, 2001, ApJS, 134, 331 . ... G.Del Zanna, B.J.I.Bromage, E.Landi, M.Landini, 2001, A , 379, 708 . ...

... PLANET . If the target is the center of a planet, enter PLANET followed by its name (e.g., PLANET JUPITER , PLANET SATURN ). ... COMET . ... If the target is a surface feature, enter FEATURE followed by the name of the parent body (e.g., FEATURE JUPITER , FEATURE IO ) . ... If the target is an offset position with respect to a solar system body (but not a feature on its surface), enter OFFSET followed by the name of the parent (reference) object (e.g., OFFSET COMET HALLEY , OFFSET JUPITER ) . ...

GENERAL DESCRIPTION OF DATABASE . It is a matter of common knoledge, that solar magnetic fields and, in particular, magnetic fields of sunspots, play important role in many solar events. In Pulkovo observatory the long-term data set of daily observations of magnetic fields of solar sunspots was accumulated, which contains great potential for further researches in solar physics. ... Second section includes files containing sum data about magnetic fields for every observational day. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... Chapman, R. and Brandt, J.: The Comet Book: A Guide for the Return of Halleys Comet (1984, Jones and Bartlett) ? ... Branley, F.: Comets (1984, T.Y. Crowell) ? good picture book for students in grades K-3. ... Schatz, D.: The Comet Cometh: An Activity Book for the Return of Comet Halley ? ... Glenn, W.: "Halley's Comet Makes a Comeback'' in The Science Teacher Jan. 1984, p. 38. ... To construct a model of an Alien Being that could exist on another planet or satellite in our solar system. ...

MPEC 2010-A35 : 2010 AL2 http://www.cfa.harvard.edu/mpec/K10/K10A35.html Printer-friendly version MPC Ope rations Status Processing (Info) ECS: Accessible Obse rv e r Se rv ice s (NEOs) NEO Services Overview NEO Confirmation NEO Confirmation (RA order) NEO Ratings NEO Page NEO Observation Planning Aid NEOChecker NEOCMT Checker Obse rv e r Se rv ice s Services Overview IAUMail Minor Planet & Comet Ephem. ... Orbital elements: 2010 AL2 Epoch 2010 Jan. ...

... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .

U nlike the other small bodies in the solar system, comets have been known since antiquity. There are Chinese records of Comet Halley going back to at least 240 BC. ... W hen they are near the Sun and active, comets have several distinct parts: . ... A comet whose orbit takes it near the Sun is also likely to either impact one of the planets or the Sun or to be ejected out of the solar system by a close encounter (esp. with Jupiter). ... more comet images . ... Comet Hale-Bopp (C/1995 O1) . ...

... In addition to the planets and their satellites the solar system contains a large number of smaller but interesting objects. There are thousands of known asteroids and comets and undoubtedly many more unknown ones. ... There are also some asteroids whose orbits carry them closer to the Sun than the Earth (Aten, Icarus, Hephaistos). Most comets have highly elliptical orbits which spend most of their time in the outer reaches of the solar system with only brief passages close to the Sun. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Slacker Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Life Under the Moon . ... Seeing Jupiter's Moons . ... Time Zones and the Spherical Earth . A Companion to the Earth? ... December 19, 1999) . ... Big Moon, Little Moon . ... How Big is the Moon? ... 14, 2000) . ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... The package includes a new ``hybrid'' symplectic integrator capable of handling close encounters, described at the conference: The Impact of Modern Dynamics in Astronomy , Namur, Belgium (Chambers 1998). ... NRC Research Associate, NASA/Ames Research Center , Moffett Field CA, USA, planetary accretion, formation of the asteroid belt and extra-solar planets. ... G.Laughlin and J.E.Chambers (2002) Astronomical Journal, , in press. ... American Astron. ... Home page of planet hunters Marcy and Butler ....

Radar Astronomy Group . ... This instrument will enable the Observatory to detect asteroids over a very much wider radial range than with the old 420 kilowatt system. ... Here are some recent images of asteroids obtained with the Arecibo Planetary Radar. ... The following data were taken by various observers using the Arecibo Observatory 12.6 cm radar. ... Chris De Vries wrote a description of how to reduce planetary radar data , using the 1988 Venus data taken at the Arecibo Observatory as a model. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . Comets and Asteroids . ... Stars . Exoplanets . ... Space Flight . ... The exoplanet HD 209458b has a mass more than 200 times Earthт??s and has a diameter greater than Jupiterт??s. It orbits its star at about an eighth of the distance Mercury orbits the sun, so the exoplanet takes only 3.5 days to complete an orbit. This proximity to a star means that the planet is hot, perhaps 1000ТАC, hence it is classed as a т??hot Jupiterт?? ...

DSS input form . The SuperCOSMOS Sky Survey . ... Pi of the Sky . The Sloan Digital Sky Survey . ... Extragalactic DataBase . ... SIMBAD Astronomical Database . ... Query form . ... The Two Micron All Sky Survey. ... The NRAO VLA Sky Survey . ... NIST Atomic Spectra Database (Lines Form) . ... The UVES Paranal Observatory Project . ... Rochester Astronomy . ... European Southern Observatory . European Astronomical Society . ... Astronomical Society of the Pacific . ... Sat24 BTA on line . ...