Tab Content
kzb's Activity
About Me
Tab Content
  • kzb's Avatar
    2021-May-13, 09:30 PM
    kzb replied to a thread Meteor speed in Science and Technology
    Isn't the fine dust meant to reach the ground unscathed, because it is decelerated gently in the very outer reaches of the atmosphere? Sure I read...
    5 replies | 109 view(s)
  • kzb's Avatar
    2021-May-13, 09:19 PM
    kzb replied to a thread Uncertainty in Science and Technology
    That's what I've been trying to say, but probably not very well. However now we have the full email, it appears they are publishing erroneous...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-12, 10:22 PM
    kzb replied to a thread Uncertainty in Science and Technology
    I'm not sure he has been told that. It seems to me some of the uncertainty bounds still include hyperbolic solutions even with this "manual...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-12, 06:24 PM
    kzb replied to a thread Uncertainty in Science and Technology
    Hang on a minute I have just recalled something ! And that is, eccentricities >1 are hyperbolic. On the fireballs thread there is a list of...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-12, 06:07 PM
    kzb replied to a thread Uncertainty in Science and Technology
    That's a different thing to excluding all hyperbolic solutions. This is Type 1 and Type 2 errors: ...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-12, 11:05 AM
    kzb replied to a thread Uncertainty in Science and Technology
    How can they be so sure ? To know this with confidence, means that there are no calculated orbits with uncertainty bounds that include hyperbolic...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-11, 04:24 PM
    kzb replied to a thread Uncertainty in Science and Technology
    It sounds like hard work, sorting out candidate interstellar meteorites from this data and then trying to find them. It does not seem like you could...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-11, 01:02 PM
    kzb replied to a thread Uncertainty in Science and Technology
    I notice it mentions "1-sigma uncertainties", which could mean the reported uncertainties are 1-sigma, corresponding to a 68% confidence uncertainty...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-11, 11:03 AM
    kzb replied to a thread Uncertainty in Science and Technology
    It's a black box. The description above does not give us any clue how the algorithms evaluate the uncertainty. In my experience, programmers...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-10, 10:04 PM
    kzb replied to a thread Uncertainty in Science and Technology
    It could be a non-standard uncertainty evaluation, because you are supposed to round uncertainties to two significant digits at most. The...
    34 replies | 495 view(s)
  • kzb's Avatar
    2021-May-10, 01:53 AM
    The tail is certainly not causing any thrust, in either direction. The tail particles are independent after they've been ejected from the nucleus. ...
    7 replies | 207 view(s)
  • kzb's Avatar
    2021-Apr-28, 08:17 PM
    If the equation N = 3.5 * D^2.12 /Myr (where D is in parsecs) is applicable in this case, 0.02pc encounters should happen on average every...
    24 replies | 757 view(s)
  • kzb's Avatar
    2021-Apr-27, 07:55 PM
    Planet 9 if it exists would have an orbit 400-800 AU (major axis of ellipse) at an inclination of 15-25 degrees. Gliese 710 approaches to about...
    24 replies | 757 view(s)
  • kzb's Avatar
    2021-Apr-25, 01:16 AM
    As we know, 1.32 million years is but an eyeblink. If human civilisation started 1,319,500 years later than it actually did, what effect would the...
    24 replies | 757 view(s)
  • kzb's Avatar
    2021-Apr-23, 04:35 PM
    Every time this calculation is revisited using new data, it gets closer. Be careful what you wish for !
    24 replies | 757 view(s)
  • kzb's Avatar
    2021-Apr-22, 09:55 PM
    According to this article, using Gaia EDR3 data, Gliese 710 will approach to just 0.02 parsecs in 1.32 million years. 0.02 parsecs is 0.065...
    24 replies | 757 view(s)
  • kzb's Avatar
    2021-Apr-16, 12:27 AM
    Is it ppm by volume or mass? The molecular mass ratio is 68/28. Anyhow, I was just wondering out loud if these planetary scientists have heard of...
    10 replies | 534 view(s)
No More Results
About kzb

Basic Information

Statistics


Total Posts
Total Posts
2,741
Posts Per Day
0.47
General Information
Last Activity
2021-May-13 09:33 PM
Join Date
2005-Apr-07
Referrals
0