... Behemoth black hole found in an unlikely place . ... black holes . ... Distance measurement is key to producing first "complete description" of a black hole . ... For the first time, astronomers have produced a complete description of a black hole, a concentration of mass so dense that not even light can escape its powerful gravitational pull. ... That movement, the scientists said, is too slow for the black hole to have been produced by a supernova explosion. ...

ABSOLUTE PROPER MOTIONS OF 331 OPEN CLUSTERS . ... The proper motions of stars in the fields of 331 open clusters were taken from Four-Million Star Catalog (4M-catalog) of positions and proper motions (Volchkov et al. ... The absolute proper motions for 21 young open clusters have been derived by comparison of precise relative proper motions of individual stars and their corresponding absolute proper motions. ... Sign of proper motions in RA . ... 0.0001 arcsec/yr . ... rms error in RA proper motion . ...

Shareable Data Center "East Siberian Center for the Earth's Ionosphere Research" (SDC ESCEIR) maintains fundamental researches for nothing  if these projects are supported by RFBR. ... SDC ESCEIR performs work on a commercial basis. Financing is supported by RFBR. RFBR Grant № 00-05-72026. ... RFBR grant . Work description (obligatory) . ... Request for work | ...

This section of library contains information about "classic" Star Catalogs. ... For a Henry Draper Catalog 272149 stars have received a total of 531,211 identifications in 7 сatalogs: . 270456 - in Astrographic Catalogue ( "Carte du Ciel", 4M), . 251943 - in Guide Stars Catalog (GSC), . ... A file with information on the components of 1788 of multiple systems in catalog HDEC (3681 component, or a combination thereof, with 4054 recording). ... A file with information about 21971 variable stars. ...

... Киевский клуб любителей астрономии "Астрополис" > . ... Запорожский клуб АЛЬТАИР > . SUN: Apparent Geocentric Positions, astronomical script . ... Жизнь клуба . ... 05 Май 2006, 03:02:20 ? ... SUN Apparent Geocentric Positions . ... 2006 May 05 00h00m00s 2h 47m 38.744s +16* 09' 09.47" . 2006 May 06 00h00m00s 2h 51m 30.299s +16* 26' 14.04" . 2006 May 07 00h00m00s 2h 55m 22.396s +16* 43' 02.11" . ... 2006 May 05 00h00m00s 2h 47m 38.729s +16* 09' 09.43" . ...

The starting page - The catalogues page - The list of the PUL2 fields - The list of the Pul-3(Pul-3SE) fields - The list of the PUL_ERS fields . please read short description of the access form controls . ... catalogue number of star (Obligatory parameter) . ... Right Ascension (ICRF/Tycho-1) J2000 at the central epoch of obs. (hours, minutes, seconds) (Obligatory parameter) . ... Declination (ICRF/Tycho-1) J2000 at the central epoch of obs. (degrees, arcmin, arcsec) (Obligatory parameter) . ...

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

... Une note trє¦s prєµcise, contenant des questions spєµciales, fut donc rєµdigєµe et adressєµe єђ l'Observatoire de Cambridge, dans le Massachusetts. ... L'Observatoire de Cambridge. ... л1€ђ Est-il possible d'envoyer un projectile dans la Lune? . ... л3€ђ Quelle sera la durєµe du trajet du projectile auquel aura єµtєµ imprimєµe une vitesse initiale suffisante, et, par consєµquent, єђ quel moment devra-t-on le lancer pour qu'il rencontre la Lune en un point dєµterminєµ? . ...