... We researched the regions with latitude higher than 60° for both hemispheres of the Moon. 944 craters and 1119 craters with diameters larger than 10 km was considered for North and South polar regions respectively. ... The total number of craters with a wholly shadowed floor is 44 for the North polar region and 43 for the South polar region. 111 and 122 craters have a floor permanently shadowed less than 10% at the North and South poles consequently. ... PERMANENTLY SHADOWED AREAS. ...

Key Abbreviation (Click on the key for the list of scientists with this affiliation) . N of Sci Number of Scientists from main and active lists affiliated in this institute . CI 86 Main citation index (total number of citations made after 1986.) ... Landau Institute for Theoretica l Physics RAS . ... Lebedev Physical Institute RAS . ... MSU Chem . ... Steklov Mathematical Institute RAS . ... B.P.Konstantinov Petersburg Nuclear P hysics Institute RAS . ... Institute of Solid State Physics RAS . ...

Cross-sections, albedo, asymmetry factor for core-mantle spheres . ... The dependence on the size parameter x for different ratio of core to total volume V core /V total . ... Parameters: V core /V total = 0, 0.25, 0.5, 0.75, 1; m mantle = 1.3; m core = 2.5+1.5i; x = 0--20 . ... The dependence on the size parameter x for different refractive index of the core m core . ... 1.3. The dependence on the size parameter x for different refractive index of the mantle m mantle . ...

Comparison of reusable space systems . Space Shuttle " (USA) and " Energiya-Buran " (USSR) . ... Official beginning of development: 1972 г. The first space flight : 12.04.1981 . Total cost to 1983: $17,8 billions (1982) . ... Total cost to January 1 1991: 16,4 billions rub. ... Certainly the "Energiya-Buran" system is more effective space complex. ... Certainly for past years "Space-Shuttle" was exposed to numerous updatings but it has main advantage before "Buran": it flies.. ...

Supernova 1999gs in NGC 4725 . This is a prediscovery image of 1999gs in NGC 4725 taken by Marco Migliardi on December 23.21 1999, during the CROSS Program with the Col DrusciХ 20" "Helmut Ullrich" telescope. This image was taken 5 days before the "discovery" image of 1999gs which was taken by LOSS this image shows a significantly brighter SN than the discovery image shows. ... Back to Bright Supernovae . Back to Bright Supernovae - 1999 . ...

ARCSAT ID NUMBER: AS08 DESCRIPTIVE TITLE: Short Term Variability for Stars of Similar Temperatures but Different Luminosities PI: Tiffany Pewett OBSERVER(S): Tiffany Pewett (GSU), Michele Silverstein (GSU), Todd Henry (GSU) UNCERTIFIED/UNTRAINED OBSERVERS: COLLABORATORS: Wei-Chun Jao (GSU) CONTACT INFORMATION: Tiffany Pewett, pewett@astro.gsu.edu, 419-460-0072 TIME REQUESTED: 1. ... December 15 - December 21 One week is requested to observe ~14 stars for photometric variability. ...

GPS GP-37 () GPS . ... GPS- (John A. Klobuchar) [3]. ... GPS GP-37, Furuno. ... Datta-Barua S., Doherty P.H., Delay S.H., Dehel t., Klobuchar J.A. Ionospheric scintillation effects on single and dual frequency GPS positioning. ... Air Force Surveys in Geophysics, No. ... Klobuchar, J. A. Ionospheric Time-Delay Algorithm for Single-Frequency GPS Users. ... Global Positioning System Standard Positioning Service (SPS) Signal Specification. 2nd Edition. ... Klobuchar, J. A. Ionospheric Effect on GPS. ...

... Module Kvant-2 was launched from Baikonur on November 26, 1989 by the LV Proton-K. It is divided into three air-tight parts with the total volume 59 m3. The total length of the module is 13.7 m; maximum diameter 4.3 m; mass at the launch 19565 kg. Mass of the useful load of the module is 5000 kg, of the fuel- 1100 kg. The area of the solar batteries is 53.2 m2 (6.9 kW). ... It docked to the nose docking port of the core vehicle and by its robot arm redocked to the side port. ...

In 1848 the Swiss astronomer Johann Rudolph Wolf introduced a daily measure- ment of sunspot number. His method, which is still used today, counts the total number of spots visible on the face of the sun and the number of groups into which they cluster, because neither quantity alone satisfactorily meas- ures sunspot activity. An observer computes a daily sunspot number by multiplying the number of groups he sees by ten and then adding this product to his total count of in- dividual spots. ...

... SHORT TERM PREDICTION OF POWER SOLAR FLARES FROM SSRT DATA . The algorithm for short term prediction of powerful solar flares, based on SSRT data, includes microwave emission characteristics in total and polarized flux, the structure of active region (AR) magnetic field at the photospheric level, and H a patrol data. ... During this period, 7 AR's crossed the solar disk, in which 20 flares of importance ? ... Data on AR's and magnetic fields were received from the Sayan observatory by teletype. ...

... Classes . ... gTimeSpan Class Reference . ... gTimeSpan (const gTimeSpan &timeSpanSrc) . ... Operation: getDays() This method returns the integer days number stored in the gTimeSpan object. ... Operation: getHours() This method returns the integer hours number stored in the gTimeSpan object. ... Operation: getMinutes() This method returns the integer Minutes number stored in the gTimeSpan object. ... Operation: getSeconds() This method returns the integer seconds number stored in the gTimeSpan...

Goals: September We introduce our countries and ourselves. November The most important event of the century in Our countries. December discussing about preparation for the Millennium. ... USA, Washington, Seattle, St. Joseph School, Leslie Boniface . ... Japan, Shotoku Elementary School, Katsumi Fujiishi . ... Denmark, Kaare Oester, Kaare Yster . ... USA, Florida, Cooper City, Embbassy Creek Elementary, Ellen Sabety ; . ... USA, Missouri, Kansas City, Maple Park Middle School, Doug Barry . ...

... What's New? Bad Astronomy . ... News . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... December 8, 2000 . In the early evening hours of Monday, December 4, something fell from the sky in the small town of Salisbury, New Hampshire. Witnesses claim a fast-moving fiery object streaked down and impacted into David and Donna Ayoub's back yard, where it started two small fires. ... A lot of the story supports the idea that it was a meteorite that did the damage. ...

... Telescopes ћ Binoculars ћ Microscopes . Meade Ultra-High Transmission coatings (UHTC ) Group . ... Meade Standard Coatings: The optical surfaces of all Meade telescopes include high-grade optical coatings fully consistent in quality with the precision of the optical surfaces themselves. ... These specialized, and extremely advantageous, coatings are offered here as the Meade Ultra-High Transmission Coatings (UHTC) group, a coatings group available optionally on many Meade telescope models. ...

Wales is approximately 242 kilometres from north to south. About two-thirds of the total population live in the South Wales coastal area, where the three biggest towns are located: Swansea, Cardiff and Newport. The Welsh are very proud of their language and culture. These are best preserved in the north and west of the country, for in the south and east they have been more challenged by industrialization. The west coast, mid Wales and North Wales are wild and beautiful! ...

FIGURE 4: PATH Total Solar Eclipse of 2009 July 22 Handan Linfen Tongchuan Pingliang Xingtai OF THE E CLIPSE THROUGH C HINA 0 80% 200 NASA 2009 Eclipse Bulletin , Espenak Anderson Kilometers Xining 400 Lanzhou Baiyin 600 Anyang Jining-Shandong Tianshui 90% CHINA 01:10 UT 04m43s 34° Guangyuan Hanzhong Xi'an ...

O-C for observatory with code - 046. December , 2004 . ... 0.16 0.22 +/- 0.11 +/- 0.12 Internal error of single observation 0.24 0.26 ----------------------Compressed Ephemeris DE200/LE200 -------------- MP Obs Dynamical Time RA ( O-C )cosDEC DEC ( O-C ) h m s ' 33342 046 2004 12 12.796066 23 54 25.365 0.34 - 9 14 38.23 0.30 33342 046 2004 12 12.798736 23 54 25.545 -0.24 - 9 14 30.06 0.26 33342 046 2004 12 12.799866 23 54 25.637 -0.24 - 9 14 26.88 -0.03 33342 ...

When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ... If you system falls into 1 or 2 (above), then increase the file descriptor limit before starting Apache, using a script like #!/bin/sh . ...

The Official Publication of the Amateur Astronomers Association of Princeton Director Bill Murray (609) 298-1179 strgazr@comcast.net Assistant Director John Church (609) 799-0723 j.church@mindspring.com Treasurer Program Chairman Michael Mitrano OPEN (609)-737-6518 michael.mitrano@worldnet ... (609) 273-1456 (908) 859-1670 and (609) 448-8644 kane@princetonastronomy.org editors@princetonastronomy.org Volume 38 From the Director December ... The speaker will be the AAAP's own John Church. ...