Abyssoft
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NEO masses
editHi Abbysoft, I just noticed your comment in List of solar system objects by mass:
- Masses for NEOs listed in the table come from the JPL Near Earth Object Program.
You wouldn't happen to have a weblink or reference for that, would you? It would go very well in the article, for e.g. tracking down future NEO discoveries of interest. See you. Deuar 22:25, 3 September 2006 (UTC)
- Right, that's the link to the NEO program homepage. Do they actually list masses somewhere in there? If as I suspect not, are they just calculated based on the size and an assumed density? Then it'd be good to a) know what is that assumed density, and b) indicate in the list that it's just a very rough estimate by using a tilde. Cheers, Deuar 17:50, 4 September 2006 (UTC)
Re your recent additions of asteroid mass estimates: most of these are only order-of-magnitude numbers, from approximate sizes and densities as Deuar said. The NEO database at JPL lists both those numbers and measured masses for all objects. In most cases, there is the order-of mass and the measured mass is flagged not available.Michaelbusch 19:11, 4 September 2006 (UTC)
Many neo's have individual pages. Here are a few examples...
| Name | Mass in kg | Page |
|---|---|---|
| 2000 SG344 | ~(7.1e+07 kg) | http://neo.jpl.nasa.gov/risk/2000sg344.html |
| 2004 VD17 | ~(2.6e+11 kg) | http://neo.jpl.nasa.gov/risk/2004vd17.html |
| 1994 GK | ~(1.5e+08 kg) | http://neo.jpl.nasa.gov/risk/1994gk.html |
Abyssoft 20:59, 4 September 2006 (UTC)
- REDIRECT User:Abyssoft/archive/pre-oct2008
Radioactive Decay Chains
editYou said: "I'm currently working on a comprehensive Periodic Decay Chart from n to uuo including all forms of decay that I can find".
Thank you for volunteering for this Herculean task. I don't know if such a thing exists on Wikipedia, but I believe the Encyclopedia Britannica had such a chart back in the 1960s, when there were fewer known elements (and far fewer isotopes). There were even fewer decay modes (no double-beta!).
And now your chart can go to Oganesson instead of uuo.
76.254.31.171 (talk) 04:21, 13 January 2017 (UTC)
I am continuing on this task although work has slowed considerable due to life's constraints. Abyssoft (talk) 15:11, 13 January 2017 (UTC)