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33473

Re: 1I error in ALCDEF

With the database generated by MPC for the ASO MPECsort program, when comet d'Arrest appeared on the data for the first time as observable, the ability to
P. Clay Sherrod
8:25 AM
#33473
 
33472

Re: 1I error in ALCDEF

Since the code can handle "O'Brien", I'm sure its just a matter of tweaking things a bit. At least that's my hope. Brian D. Warner Center for Solar System
Brian Warner
7:33 AM
#33472
 
33471

Re: 1I error in ALCDEF

And I predicted that it would. This is something that easily could have been avoided by simply leaving out all characters that will cause confusion. ... Dr.
P. Clay Sherrod
5:00 AM
#33471
 
33470

Re: 1I error in ALCDEF

Looks like that apostrophe has started to wreak its havoc... *—J.L.* *LinkedIn * *Twitter *
J.L. Galache
1:37 AM
#33470
 
33469

1I error in ALCDEF

I am pretty sure that this is a "Bobby Tables" type SQL error. In alcdef.org/alcdef_GenerateALCDEFPage.php if you search for 1I it comes up with 'Oumuamua
marshall_eubanks
Nov 22
#33469
 
33468

Re: Observations of YW14A15?

I got a quick reply from Bill Ryan at (H01) Magdalena Ridge, with eight additional observations. With that, I was able to link to the 2014 observations and
Bill Gray
Nov 22
#33468
 
33467

Observations of YW14A15?

Hello all, This object was briefly on NEOCP, then removed as "not a minor planet". I can confirm that it's an artsat. I _think_ it's 1963-023C = NORAD
Bill Gray
Nov 22
#33467
 
33466

Re: Is nasa.gov Down?

On 2017-11-21 14:00, 'Gerald McKeegan' geraldspace@... [mpml] ... A random nasa.gov page loads just fine for me. Are you sure your using https: Many
marshall_eubanks
Nov 21
#33466
 
33465

Is nasa.gov Down?

I have been unable to connect to any nasa.gov website for the last couple hours. All other web sites load normally. Is NASA having a server problem? Thanks,
Gerald McKeegan
Nov 21
#33465
 
33464

Re: Asteroid rotation

It does, in effect, but not under that name.  We refer to it as "long axis mode" (LAM), as opposed to the damped "short axis mode" (SAM) of rotation.  If the
Alan Harris
Nov 20
#33464
 
33463

Re: Asteroid rotation

... Although the rotation of celestial bodies has been under study for several centuries (and thus has a large literature), and although the basic physics is
marshall_eubanks
Nov 20
#33463
 
33462

Re: Asteroid rotation

The classic paper is Burns and Safronov, "Asteroid Nutation Angles", in Mon. Not. R. Astro. Soc. 165, 403-411, 1973 (if you don't have access to a copy I could
Alan Harris
Nov 20
#33462
 
33461

Asteroid rotation

Dear all, I have some basic questions about the rotation of asteroids, that is objects rather isolated in space. Is the natural rotation of these objects to
Jean-Claude Merlin
Nov 20
#33461
 
33460

1I/2017 U1 (`Oumuamua): MPEC 2017-W75 and another paper

1I/2017 U1 (`Oumuamua) https://en.wikipedia.org/wiki/1I/%CA%BBOumuamua https://ssd.jpl.nasa.gov/sbdb.cgi?orb=1;sstr=1I MPEC 2017-W75: 1I/`Oumuamua
Patrick Schmeer
Nov 20
#33460
 
33459

Re: 1I (one-eye) MPC db search

Yes indeed, O is used in the half-month sequence. But that's another odd decision of the Minor Planet Center. Why use the O (that can be confused with zero),
Jean Meeus
Nov 20
#33459
 
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