Subject: Fwd: LSST SWG document
From: Steve Larson
Submitted: Thu, 10 Jun 2004 09:28:22 -0700
Message number: 222
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> From: David Morrison <dmorrison@arc.nasa.gov>
> Date: June 10, 2004 8:37:04 AM MST
> To: slarson@pirl.lpl.arizona.edu, lsst-general@astro.princeton.edu
> Subject: Re: LSST SWG document
>
>
> Michael:
>
> In a couple of areas Steve Larson and I seem to be talking past each
> other.
>>
>> To echo Dave Morrison, we should be consistent in emphasizing PHAs
>> rather than NEOs.
>
> Actually, I favor using NEAs, not either NEOs or PHAs, in the abstract
> and introduction.
I missed David's point relating to consistency in NEO, NEA and PHA
usage in the abstract,
introduction and the body of the paper. The distinctions between these
are made
in the body of the paper. We had previously discussed that the object
with
our name on it will be a PHA, so might be more compelling to readers.
At this late stage,
however, it is not worth bringing up - so never mind....
>>
>> P6, Spaceguard survey has a goal of discovering by 2008 AT LEAST 90%
>> of the 1km NEOs.
>
> Again, this should be NEAs, not either NEOs or PHAs.
Sorry for the typo - the point is that the statement was that the
Spaceguard goal
is to discover at least 90% of the NEAs - a distinction the NASA NEOO
project
is sensitive to.
>
>>
>> Discovery of PHAs requiring small delta V identify future potential
>> NASA
>> mission targets.
>
> I don't understand this comment from Steve -- it seems to me that the
> distinctions between NEOs, NEAs, and PHAs are quite clear in the body
> of the document. It is the sometimes inconsistent usage in the
> abstract and introduction that concerned me
The point I was trying to make with this statement is that if NASA is
to be approached to contribute
towards LSST, mission target identification would be highly relevant.
> David Morrison.
>
>>
>>
>> -Steve Larson
>>
>>
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>
> --
> +++++++++++++++++++++++++++++++++++++++++++
>
> David Morrison, NASA Ames Research Center 240-1
> Tel 650 604 5094; Fax 650 604 4251; Cell 650 278 0343
> david.morrison@nasa.gov or dmorrison@arc.nasa.gov
> website: http://astrobiology.arc.nasa.gov
> website: http://nai.arc.nasa.gov
> website: http://impact.arc.nasa.gov
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<excerpt><bold><color><param>0000,0000,0000</param>From:
</color></bold>David Morrison <<dmorrison@arc.nasa.gov>
<bold><color><param>0000,0000,0000</param>Date: </color></bold>June
10, 2004 8:37:04 AM MST
<bold><color><param>0000,0000,0000</param>To:
</color></bold>slarson@pirl.lpl.arizona.edu,
lsst-general@astro.princeton.edu
<bold><color><param>0000,0000,0000</param>Subject: </color>Re: LSST
SWG document
</bold>
Michael:
In a couple of areas Steve Larson and I seem to be talking past each
other.
<excerpt>
To echo Dave Morrison, we should be consistent in emphasizing PHAs
rather than NEOs.
</excerpt>
Actually, I favor using NEAs, not either NEOs or PHAs, in the abstract
and introduction.
</excerpt>
I missed David's point relating to consistency in NEO, NEA and PHA
usage in the abstract,
introduction and the body of the paper. The distinctions between these
are made
in the body of the paper. We had previously discussed that the object
with
our name on it will be a PHA, so might be more compelling to readers.
At this late stage,
however, it is not worth bringing up - so never mind....
<excerpt><excerpt>
P6, Spaceguard survey has a goal of discovering by 2008 AT LEAST 90%
of the 1km NEOs.
</excerpt>
Again, this should be NEAs, not either NEOs or PHAs.
</excerpt>Sorry for the typo - the point is that the statement was
that the Spaceguard goal
is to discover at least 90% of the NEAs - a distinction the NASA NEOO
project
is sensitive to.
<excerpt>
<excerpt>
Discovery of PHAs requiring small delta V identify future potential
NASA
mission targets.
</excerpt>
I don't understand this comment from Steve -- it seems to me that the
distinctions between NEOs, NEAs, and PHAs are quite clear in the body
of the document. It is the sometimes inconsistent usage in the
abstract and introduction that concerned me
</excerpt>
The point I was trying to make with this statement is that if NASA is
to be approached to contribute
towards LSST, mission target identification would be highly relevant.
<excerpt>David Morrison.
<excerpt>
-Steve Larson
LSST LSST LSST LSST LSST Mailing List Server LSST LSST LSST LSST
LSST LSST
LSST
LSST This is message 217 in the lsst-general archive, URL
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LSST
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LSST The index is at
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LSST To post a message, mail it to lsst-general@astro.princeton.edu
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LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST LSST
LSST LSST
</excerpt>
--
+++++++++++++++++++++++++++++++++++++++++++
David Morrison, NASA Ames Research Center 240-1
Tel 650 604 5094; Fax 650 604 4251; Cell 650 278 0343
david.morrison@nasa.gov or dmorrison@arc.nasa.gov
website: http://astrobiology.arc.nasa.gov
website: http://nai.arc.nasa.gov
website: http://impact.arc.nasa.gov
</excerpt>
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