Электронная библиотека астронома-любителя. Книги по астрономии, телескопостроению, оптике.

Май 1998


  • Обзоры оружия и снаряжения
  • m31.spb.ru

  • AstroTop-100

    Яндекс цитирования


    Архив RU.SPACE.NEWS за 08 мая 1998

    Дата: 08 мая 1998 (1998-05-08) От: Alexander Bondugin Тема: Lunar Prospector Update - May 1, 1998 Привет всем! Вот, свалилось из Internet... Lunar Prospector Mission Status Report #30 May 1, 1998 - 1:00 p.m. EST (10:00 a.m. PST) The Lunar Prospector spacecraft continues to perform very well and instruments are collecting good data. Several maneuvers were performed in the last week: a test pulse firing in preparation for the larger precession maneuver (planned for 3 days later), a reorientation of the spin axis to improve the Sun angle, a circularization set of burns to adjust the orbit, and a spin trim to maintain nominal rate. On April 23 (DOY 113), commands were sent to set the telemetry to read out thruster temperatures at a high rate for the test on April 24 (DOY 114). Lunar Prospector executed a 2-pulse reorientation maneuver at 8:31AM (PDT) April 24 (GMT 114/1531). Engines used were A1 and A4, each executed one 0.2 second pulse, for a total reorientation of approximately 0.15 degrees. On April 27 (DOY 117), the spin axis was precessed by 8.5 deg by firing 40 0.2-sec pulses. Engines A1 and A4 were fired at 8:08AM (PDT) (117/1508). A set of circularization burns were fired on May 1 (DOY 121). At 8:50AM (15:50 GMT), thrusters A3 and A4 were fired for 38.8 seconds to increase the s/c velocity by 6.0 m/s, raising periapsis (lowest point in orbit) from 85 km to 112 km. At 9:54 (16:54), thrusters A3 and A4 were fired for 37.1 seconds at the ascending node to make a new periapsis with altitude 88 km by slowing the spacecraft down by 5.74 m/s. The target orbit is now 88 x 112 km but with apoapsis (highest point in orbit) and periapsis flipped. The spin rate was trimmed with a spin down maneuver at 10:35 (17:35 GMT). Thruster T1 was fired for 0.7 seconds to reduce the spin rate from 12.15 to 11.95 rpm. After the maneuver burns, the high-level voltage on the GRS instrument was increased by one count with a GHV1LEV command. Current spacecraft state 9:00 (1600 GMT 5/1/98) [before all burns today]: Orbit: 1330 Downlink: 3600 bps Spin Rate: 11.96 rpm Spin Axis Attitude (ecliptic): Latitude: 88.9 deg Longitude: 79.1 deg Trajectory: Periselene Alt: 85 km Aposelene Alt: 114 km Period: 118 minutes Occultations: none Eclipses: 45 minutes The navigation team will need several hours to confirm the orbit burns, but preliminary data shows that everything went nominally. Lisa Chu Thielbar NASA Ames Research Center Moffett Field, CA 94035-1000 Hа сегодня все, пока! =SANA=
    Дата: 08 мая 1998 (1998-05-08) От: Alexander Bondugin Тема: Space Science Upate To Show How To Feed A Black Hole Привет всем! Вот, свалилось из Internet... Douglas Isbell Headquarters, Washington, DC May 7, 1998 (Phone: 202/358-1547) Ray Villard Space Telescope Science Institute, Baltimore, MD (Phone: 410/338-4514) NOTE TO EDITORS: N98-32 SPACE SCIENCE UPDATE TO SHOW HOW TO FEED A BLACK HOLE New visible and infrared images of Centaurus A, the nearest active galaxy to Earth, are the focus of the next Space Science Update. These images, obtained by NASA's Hubble Space Telescope, are providing astronomers with unique insights about the supermassive black hole at the galaxy's center, which is actively "feeding" due to a recent galactic collision. The press briefing will be held at 1 p.m. EDT on Thursday, May 14, at NASA Headquarters. Participants will include: Dr. Ethan J. Schreier Astronomer and associate director for operations, Space Telescope Science Institute, Baltimore, MD Dr. Alessandro Marconi Astronomer, Astrophysical Observatory of Arcetri, Florence, Italy Dr. Anne Kinney Astronomer, Space Telescope Science Institute, Baltimore, MD Dr. Bruce Margon Astronomy professor and former chairman of the Astronomy Department, University of Washington, Seattle, WA Dr. Dave Leckrone Senior project scientist, Hubble Space Telescope Project, NASA Goddard Space Flight Center, Greenbelt, MD The Space Science Update will originate from the NASA Headquarters Auditorium, 300 E St., S.W., Washington, DC. It will also be carried live on NASA TV with two-way question-and-answer capability for reporters covering the event from participating NASA centers, including the Johnson Space Center in Houston, site of the media workshop on the International Space Station. NASA Television is broadcast on the GE-2 satellite, located on Transponder 9C, at 85 degrees West longitude, vertical polarization, frequency 3880.0 Mhz, audio 6.8 MHz. Live audio of the broadcast will be available on voice circuit at NASA's Kennedy Space Center, FL, on 407/867-1220. -end- Hа сегодня все, пока! =SANA=
    Дата: 08 мая 1998 (1998-05-08) От: Alexander Bondugin Тема: WDC-A R&S Launch Announcement 12936: Cosmos 2351 Привет всем! Вот, свалилось из Internet... COSPAR/ISES WORLD WARNING AGENCY FOR SATELLITES WORLD DATA CENTER-A FOR R & S, NASA/GSFC CODE 633, GREENBELT, MARYLAND, 20771. USA SPACEWARN 12936 COSPAR/WWAS USSPACECOM NUMBER SPACECRAFT INTERNATIONAL ID (CATALOG NUMBER) LAUNCH DATE,UT COSMOS 2351 1998-027A 25327 07 MAY 1998 DR. JOSEPH H. KING, DIRECTOR, WDC-A-R&S. [PH: (301) 286 7355. E-MAIL: KING@NSSDCA.GSFC.NASA.GOV 07 MAY 1998, 19:00 UT] Further details will be in the next SPACEWARN Bulletin Dr. Edwin V. Bell, II _/ _/ _/_/_/ _/_/_/ _/_/_/ _/_/ Mail Code 633 _/_/ _/ _/ _/ _/ _/ _/ _/ NASA Goddard Space _/ _/ _/ _/_/ _/_/ _/ _/ _/ Flight Center _/ _/_/ _/ _/ _/ _/ _/ _/ Greenbelt, MD 20771 _/ _/ _/_/_/ _/_/_/ _/_/_/ _/_/ +1-301-286-1187 ed.bell@gsfc.nasa.gov SPACEWARN home page: http://nssdc.gsfc.nasa.gov/spacewarn/ Hа сегодня все, пока! =SANA=
    Дата: 08 мая 1998 (1998-05-08) От: Alexander Bondugin Тема: Sam Armstrong Named Associate Administrator For Aeronautics And Space Subject: Sam Armstrong Named Associate Administrator For Aeronautics And Space Привет всем! Вот, свалилось из Internet... Dwayne C. Brown Headquarters, Washington, DC May 7, 1998 (Phone: 202/358-1726) RELEASE: 98-78 ARMSTRONG NAMED ASSOCIATE ADMINISTRATOR FOR AERONAUTICS AND SPACE TRANSPORTATION TECHNOLOGY Lt. Gen. Spence M. (Sam) Armstrong (USAF, Ret.) has been named to head NASA's Aeronautics and Space Transportation Technology Enterprise at NASA Headquarters in Washington, DC, effective May 11, 1998, Administrator Daniel S. Goldin announced today. Armstrong's extensive career includes experience in flight testing and astronautical engineering as well as command at five different levels within the U.S. Air Force. He has served as NASA's Associate Administrator for Human Resources and Education since September 1991. (Stanley S. Kask Jr. will serve as acting Associate Administrator for this office.) Prior to that assignment, Armstrong served as director of program architecture for the Synthesis Group, formed as a temporary organization from 1990-1991 to develop long-range program architectures for the U.S. human space flight program. As Associate Administrator, Armstrong will be responsible for strategic planning, requirements definition and budgetary formulation of NASA's aeronautics research and space transportation technology activities. Armstrong's duties will include overall responsibility for each of NASA's four aeronautical research centers -- Ames, Moffett Field, CA; Dryden, Edwards Air Force Base, CA; Langley, Hampton, VA; and Lewis, Cleveland, OH. "We are at a crucial time for NASA, the Nation and the world in aerospace technology," Goldin said. "We have the traditional aeronautics research and we have the technologies that are emerging from the efforts in space transportation. NASA needs to fully integrate the two to get the leverage and synergy needed if we are to be the future aerospace leader. I've chosen Sam Armstrong because he has the technical background and proven track record as a leader. He has my complete backing to make this happen through organizational changes within the enterprise and through cooperation with other government agencies, the aerospace industry and the international community." Armstrong is a retired U.S. Air Force Lieutenant General and command pilot with over 4,500 hours (including 100 missions over North Vietnam in the F-105) flying time in 50 different aircraft. He was Vice Commander of Air Force Systems Command from July 1987 to April 1990, and prior to that was Vice Commander in Chief, Military Airlift Command. From July 1983 to July 1985 he was Chief of the U.S. Military Training Mission to Saudi Arabia. He also served as Commander, Air Force Military Training Center, San Antonio, TX; Deputy Chief of Staff for Technical Training, Air Training Command; Deputy Director for Space and C3, DCS Research, Development, and Acquisition, Headquarters USAF, the Pentagon; Assistant Deputy Chief of Staff for Operations, Air Training Command; Commander, 80th Flying Training Wing, Sheppard Air Force Base, TX; Base Commander and, later, Deputy for logistics, 12th Flying Training Wing, Randolph AFB, TX. He graduated from the U.S. Naval Academy, Annapolis, MD, with a BS in engineering. Armstrong also received master's degrees in both astronautical and instrumentation engineering from the University of Michigan. He also attended Harvard University's Senior Managers in Government Program; Columbia University's Executive Program in Business Administration; the USAF Aerospace Research Pilot School, Edwards Air Force Base, CA; and the Air War College. He is married to the former Beth Webb of Myrtle Beach, SC, and they have two children and three grandchildren. -end- Hа сегодня все, пока! =SANA=
    Дата: 08 мая 1998 (1998-05-08) От: Alexander Bondugin Тема: Full Data Sets From Galileo's First 7 Orbits Now Available Привет всем! Вот, свалилось из Internet... Galileo Solid State Imaging Full Data Releases ALL IMAGES obtained by the Galileo Solid State Imaging (SSI) system during the spacecraft's first seven orbits (G1, G2, C3, E4, E6, G7) of Jupiter are now validated and available. Images and data obtained by NASA/JPL's Galileo mission have been available on an ongoing basis during the spacecraft's journey through the Jovian system in order to share with the public the excitement of exploration and new discoveries being made via the NASA/JPL Galileo spacecraft. Galileo scientists have a one year period set aside for the process of calibrating and validating the data. The full digital images necessary for scientific analysis are released within one year of receipt of an orbit's last data. * IMAGE PRODUCTS from the ongoing public releases are available now in multiple formats (including tiff, gif, pict, jpeg). * ALL IMAGES from the first seven orbits (G1, G2, C3, E4, E6 & G7) are merged and validated and available via the Planetary Data System. * Nominal Mission (6/96 - 12/97) Release Schedule for validated data sets * ALL Galileo Cruise Phase (10/89 - 12/95) Data ALL IMAGING DATA from Orbits 1 through 7 is available via the Planetary Data System (PDS) Imaging Node For Galileo SSI data, go to URL: http://www-pdsimage.jpl.nasa.gov/PDS/public/Atlas/Atlas.html and select the option: "Galileo SSI REDRs of Earth and the Moon, Venus, Gaspra, Ida, and Jupiter and its satellites " The PDS homepage is: http://www-pdsimage.jpl.nasa.gov/PDS/ The PDS offers a simple query interface to access all fully released SSI data. It allows the user to search by various parameters such as target name, spacecraft clock, latitude/longitude, filter, phase angle, exposure, gain, and compression ratio. PDS will continue to expand and improve this interface which will eventually include a format to select data via a map interface. To accomodate the various needs of the scientific community, the archived files are raw data files which merge the multiple downlinks of data to provide the best final version of an image. Supporting data such as calibration files are also available. Such files include dark currents, radiometric calibrations, blemishes, hot pixels, etc.. Galileo Primary Mission (6/96-12/97) Solid State Imaging Orbital Data Sets Public Release Schedule Orbit 1 (G1) September 06, 1997 Orbit 2 (G2) November 04, 1997 Orbit 3 (C3) December 19, 1997 Orbit 4 (E4) February 20, 1998 Orbit 6 (E6) April 05, 1998 Orbit 7 (G7) May 07, 1998 Orbit 8 (G8) June 25, 1998 Orbit 9 (C9) September 17, 1998 Orbit 10 (C10) November 06, 1998 Orbit 11 (E11) & GEM Schedules will be posted when available. NASA/JPL's Galileo Project gratefully acknowledges the collaborative efforts of NASA's Planetary PhotoJournal and the Planetary Data System in making Galileo mission images and data available to the public and scientific communities. Hа сегодня все, пока! =SANA=

    сайт служит астрономическому сообществу с 2005 года