The distribution of the orbital inclinations of the asteroids reach a maximum near 22°. This maximum is due to the objects of the Hungaria group. However,...
Jean Meeus
JMeeus@...
May 2, 2008 10:54 am
20716
Dear Jean, The concentrations around some typical values of inclinations you indicate look to be caused by the following families : 2.2 deg : Koronis 5.2 deg :...
Jean-Claude Merlin
jcmerlin@...
May 2, 2008 2:02 pm
20717
C. Bell wrote: < Is there a histogram plot of inclination or other asteroid < orbital data somewhere on the internet that shows these < maxima or minima? I...
Jean Meeus
JMeeus@...
May 2, 2008 3:33 pm
20718
The MPC maintains a set of plots for the various elements the one for inclination is at http://www.cfa.harvard.edu/iau/plot/OrbEls03.gif David ... From:...
While not histograms, Petr Scheirich has many ploys of Asteroid (and Comet) Groups well worth bookmarking: http://sajri.astronomy.cz/asteroidgroups/groups.htm ...
Belated Happy birthday. (April 28, 1928 – July 18, 1997) R.I.P. Gene Shoemaker did more than any other person to advance the idea that sudden geologic...
This probably already exists somewhere, but I couldn't find it yesterday: observatories from the MPC list viewable on Google Earth. Where available, I added a...
http://bbs.keyhole.com/ubb/showthreaded.php/Cat/0/Number/89986/page/0 Be aware that there is discussion on this file that many of the obsolete and no longer...
Re altitudes.... Prior to GPS, altitudes were almost universally referenced to Mean Sea Level. Because GPS computes the location of the observer in 3-D space,...
The program of the ACM 2008 meeting has just been posted online: http://acm2008.jhuapl.edu/ http://www.lpi.usra.edu/meetings/acm2008/pdf/program.pdf Cheers, ...
Hi Dave, Thanks for the clarification on this. In particular, I remembered (from working at a mapping company before 1992) that the difference between MSL...
... http://scully.cfa.harvard.edu/~cgi/FeedBack?U=/iau/ContactUs.html&S=Observatory%20Code%20Correction ... Please do not use this link directly! If you do,...
Good question. You are correct in saying that for astronomical applications you need to convert the coordinates of the observatory to geocentric-referenced XYZ...
Media Relations Indiana University Contact: David Bricker, University Communications 812-856-9035 FOR IMMEDIATE RELEASE: May 5, 2008 65-million-year-old...
Ron Baalke
baalke@...
May 7, 2008 9:17 pm
20733
Hey everybody. My name is Gloria Park, a science high school student from South Korea. Here is a project that I want to conduct. The project is figuring out...
Your question does not have a straight-forward answer - as the NOMAD catalogue contains fields for B, V, R, J, H, and K magnitudes - with no one field being...
... which can use NOMAD ... Vizier access - the ... otherwise it works very ... last month. ... Hi all, The latest official version of Astrometrica (4.4.2.366)...
The version I'm testing is not public.... You will have to wait until Herbert finds time to sort out te issue of field size with Vizier.... Re MPC - the...
... Folks thinking about using NOMAD for, well, anything, should know that it is basically a compilation catalogue (roughly USNO-B1.0 + UCAC2 + 2MASS +...
Brian Skiff
bas@...
May 13, 2008 7:57 am
20740
If anyone is in the situation of having to use USNO-B1 to get a decent stellar reference frame, NOMAD has to be a MUCH better solution - in that it provides...
On a related topic... has anyone tried GSC-2.3, CMC-14, or SDSS for astrometry? Any comments about what you found? The former is a "megacatalogue" with a...
... I've been working with Dave Monet to get a good astrometric reference catalog out of NOMAD. It is true that NOMAD inherits the problems of the source ...
Dave Herald's and Scott Stuart's responses are indicative mainly that NOMAD is a useful catalogue --- if you are really familiar with the stuff that went into...
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