Re: NHATSchecker, A New Mission Planning Utility

Status: U Return-Path: Received: from noehlo.host ([209.86.89.121]) by mdl-pollute.atl.sa.earthlink.net (EarthLink SMTP Server) with SMTP id 1HaEfA2LF3Nl37b0; Sun, 31 Mar 2019 13:28:06 -0400 (EDT) Received: from elasmtp-masked.atl.sa.earthlink.net ([209.86.89.9]) by ibscan-constellation.atl.sa.earthlink.net (EarthLink SMTP Server) with ESMTP id 1HaEfze13PGoU93 for ; Sun, 31 Mar 2019 13:28:05 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=earthlink.net; s=dk12062016; t=1554053285; bh=yWkBd+HLc2lB548pHSMRh0Y/5w6OfgMX4fN4 RFM+Ds4=; h=Received:User-Agent:Date:Subject:From:To:Message-ID: Thread-Topic:Thread-Index:In-Reply-To:Mime-version:Content-type: X-ELNK-Trace:X-Originating-IP; b=j6BtsvyfZ3jj0CtOeSVX0dsBv1QgFZ9sX h5C+1BjX51kNn5tmeHTPqN9LNAXwQlTWrGPfdH09S61WEhgQeYPlrAgwnjJO/J4Zz3+ K3OvfEmJI6M79fGal8uZ/tG37AtoHqmF0VwPl7WMxxI/uahtD0elLjXTi6ZoGY6FpAX paoiWQpe8f1hnNi1kT6K1MvNQRgEKGkaLAyK6xPxzPaJZGqc4I4asQi8LSD78jx9qwS gX29JcP9uRowqr0sxXpx1rZChzs3Clc/54uzUzKm+Hcp9Bp/7WjjUBEB12Knl6KmmWo 3yyPOxD4y/3ZUczT8jpU0VC9rRO4idUO/UZkNINVg== DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk12062016; d=earthlink.net; b=N/mautYwK5gBWJRNAF/MiNi7BDAR4Z5ipRws48WoyTl5hUUEct3MNdCkiTVmwDhDaa91zUMXuPkLa0kCydSrQz/vdzFoZM/0F9Ilqz9QAUHVXNF0HBJVf4zDL4ttnz4jhE6Z1H5vmYeVZLinR+aK2wlaMNVOrzWD59MbfXu5bS/y9HXRAomgaowRap8xLjT+7qmfmIur1vtSimzO9IKM4F7aDfy17API2K+7XVbrMvhA2/nt/JOk1dm838JTZ82M9UWNG9+7p/bJoSRiQz+kJ1fN54c0fGI+ESiIQw81tbpzzB3SKspZP+JbMuSli6HcLlccFCL18tBc8AlRFCXuGA==; h=Received:User-Agent:Date:Subject:From:To:Message-ID:Thread-Topic:Thread-Index:In-Reply-To:Mime-version:Content-type:X-ELNK-Trace:X-Originating-IP; Received: from [97.115.101.219] (helo=[192.168.0.165]) by elasmtp-masked.atl.sa.earthlink.net with esmtpa (Exim 4) (envelope-from ) id 1hAeDk-000CqH-V0; Sun, 31 Mar 2019 13:26:30 -0400 User-Agent: Microsoft-Entourage/12.36.0.130206 Date: Sun, 31 Mar 2019 10:25:51 -0700 Subject: Re: NHATSchecker, A New Mission Planning Utility From: Daniel Adamo To: ATIG Message-ID: Thread-Topic: NHATSchecker, A New Mission Planning Utility Thread-Index: AdSPLD54l8UfThzOvEufv/Q8wSuAXAQr4n1uEgLARt0= In-Reply-To: Mime-version: 1.0 Content-type: multipart/mixed; boundary="B_3636872772_14945146" X-ELNK-Trace: 40c2bfad0c7621d594f5150ab1c16ac0926d8f14b602912c733f44ba1b4021d2efef8c8d901a1ad8350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 97.115.101.219 X-ELNK-TLSInbound:: 1 X-ELNK-Received-Info: spv=0; X-ELNK-AV: 0 X-ELNK-Info: sbv=1; sbrc=-0; sbf=e0; sbw=010; > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --B_3636872772_14945146 Content-type: multipart/related; boundary="B_3636872772_14947238" --B_3636872772_14947238 Content-type: multipart/alternative; boundary="B_3636872772_14973718" --B_3636872772_14973718 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit ATIG Members- The attached paper on NHATSchecker insights was submitted March 30 for presentation at the 2019 AAS/AIAA Astrodynamics Specialist Conference in August (ref. http://www.space-flight.org/docs/2019_summer/2019_summer.html). Comments are welcome and can be reflected in the final conference paper if this submission is accepted. For those who have read earlier drafts of this paper, new material in the attachment is primarily confined to the subsection beginning at the bottom of p. 18. -Dan From: Daniel Adamo Date: Sat, 29 Dec 2018 17:05:41 -0700 Conversation: NHATSchecker, A New Mission Planning Utility Subject: Re: NHATSchecker, A New Mission Planning Utility ATIG Members- I've had some excellent feedback on the NHATSchecker white paper R1 draft uploaded December 8. This has led to implementing a new breed of icicle plot in which color is driven by loiter time at the NEO destination. If you've already read the R1 draft, the attached R2 PDF file completely supersedes it and describes this new functionality in the last paragraph in Section 2 (pp. 4-5). Figures 5 (p. 12) and 8 (p. 17) are examples of icicle plots with loiter times driving coloration. I mention the possibility of future abort functionality for NHATSchecker in Section 4's closing paragraph on p. 21. Happy 2019 to all! -Dan From: Daniel Adamo Date: Sat, 08 Dec 2018 11:28:49 -0800 Conversation: NHATSchecker, A New Mission Planning Utility Subject: NHATSchecker, A New Mission Planning Utility ATIG Members- Some of you interested in human spaceflight (HSF) to near-Earth objects (NEOs) may be familiar with the NEO HSF Accessible Targets Study (NHATS, pronounced "gnats"). A NHATS intro can be found at https://cneos.jpl.nasa.gov/nhats/intro.html. Whereas NASA's NHATS software assesses the entire Small Bodies Database (SBDB) at JPL for NEO accessibility on a daily basis, the subject NHATSchecker utility only assesses a single specified destination during accessibility processing. The attached PDF file contains a white paper documenting NHATSchecker pedigree, motivation, design, and preliminary processing results, comparing the latter to NHATS output where possible. I'll be presenting some of the paper's findings at the 20th meeting of the Small Bodies Assessment Group (SBAG) in late January 2019. See http://www.cvent.com/events/20th-nasa-small-bodies-assessment-group-meeting/ event-summary-334ddb02c40f448dae580f1d1ae68d18.aspx for details on attending SBAG#20 in person or virtually. Your feedback on NHATSchecker software or the attached paper is invited. Here's wishing you and yours happy holidays and a fulfilling 2019! -Dan --B_3636872772_14973718 Content-type: text/html; charset="US-ASCII" Content-transfer-encoding: quoted-printable Re: NHATSchecker, A New Mission Planning Utility ATIG Members-

The attached paper on NHATSchecker insights was submitted March 30 for pres= entation at the 2019 AAS/AIAA Astrodynamics Specialist Conference in August = (ref. http://www.space-flight.org/docs/2019_summer/2019= _summer.html). Comments are welcome and can be reflecte= d in the final conference paper if this submission is accepted. For th= ose who have read earlier drafts of this paper, new material in the attachme= nt is primarily confined to the subsection beginning at the bottom of p. 18.=

-Dan

From: Daniel Adamo <adamod@earthlink.net>
Date: Sat, 29 Dec 2018 17:05:41 -0700
Conversation: NHATSchecker, A New Mission Planning Utility
Subject: Re: NHATSchecker, A New Mission Planning Utility

ATIG Members-

I've had some excellent feedback on the NHATSchecker white paper R1 draft u= ploaded December 8. This has led to implementing a new breed of icicle= plot in which color is driven by loiter time at the NEO destination. = If you've already read the R1 draft, the attached R2 PDF file completely sup= ersedes it and describes this new functionality in the last paragraph in Sec= tion 2 (pp. 4-5). Figures 5 (p. 12) and 8 (p. 17) are examples of icic= le plots with loiter times driving coloration. I mention the possibili= ty of future abort functionality for NHATSchecker in Section 4's closing par= agraph on p. 21.

Happy 2019 to all!

-Dan

From: Daniel Adamo <adamod@earthlink.net>
Date: Sat, 08 Dec 2018 11:28:49 -0800
Conversation: NHATSchecker, A New Mission Planning Utility
Subject: NHATSchecker, A New Mission Planning Utility

ATIG Members-

Some of you interested in human spaceflight (HSF) to near-Earth objects (NE= Os) may be familiar with the NEO HSF Accessible Targets Study (NHATS, pronounced "gnats"). A NHATS in= tro can be found at ht= tps://cneos.jpl.nasa.gov/nhats/intro.html. Whereas NASA's NHATS so= ftware assesses the entire Small Bodies Database (SBDB) at JPL for NEO acces= sibility on a daily basis, the subject NHATSchecker utility only assesses a = single specified destination during accessibility processing.

The attached PDF file contains a white paper documenting NHATSchecker pedig= ree, motivation, design, and preliminary processing results, comparing the l= atter to NHATS output where possible. I'll be presenting some of the p= aper's findings at the 20th meeting of the Small Bodies Assessment Group (SB= AG) in late January 2019. See http://www.cvent.com/events/20th-nasa-small-bodies-ass= essment-group-meeting/event-summary-334ddb02c40f448dae580f1d1ae68d18.aspx for details on attending SBAG#20 in person or virtually.

Your feedback on NHATSchecker software or the attached paper is invited. &n= bsp;Here's wishing you and yours happy holidays and a fulfilling 2019!

-Dan