From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id AFFE33B29E for ; Sun, 3 Oct 2021 11:18:17 -0400 (EDT) Received: by mail-il1-x129.google.com with SMTP id h20so15685814ilj.13 for ; Sun, 03 Oct 2021 08:18:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=bxXX6srjseQ4ApAIfr+U9xvatVlANRw4fBJscAZ7z3k=; b=dN10pD/tybZ6VG2FSBcqG/+vY0HBf4LlHgSOzrYRys2Uu+vbCicDLqyQm6a8lNqo/v 79E4h9AzAKzw0YDNKZqT4a5C1egXDN150j8+jdm63vrSTaqEls12FuHHspmmfrnQw+20 dPYyFqtMXNGm9aDvZ+86Qscpsms3gCWJt4WhaUcE651zxlATezSFOPyMJbw3FR15MKDD VuH8a7wXK0b3944O7CFrKmBoSyvkw6QhY7dBSSLKuhIngaofs6TFgXsT3h0/nnQeYjJn 5EM/n0oKCfknu1xHRZB7ZRU/gB5mHSVyY04BhbgqhQ5HdvtGvqXv1gVQmD0o9Yhh/xJL oclA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to :content-transfer-encoding; bh=bxXX6srjseQ4ApAIfr+U9xvatVlANRw4fBJscAZ7z3k=; b=qlDJZ0NZ3U1HuvVAMi6TabqpOgVlFPHT8BWuHAtAcVSMOcdbonlo8E3Hhz/951OSZW EqzU979pEDeAgHRKTAmRwh2Joe/QXOmwgm8gLmwj5NXLyuVRPljja7f8tC5VPChRPsVu GmXGyLgncf2DJmPkPgCfjv3Z/d1mQoW0x+U8IaJD5a0jrTK4fWr5/NZWtHloybltygTY 3aWMddnBN2KzuxSrpEXMeOQd4lrhI3O/NTpQUSx9zNFWymU1LZck0lEZIN87aH27NexR eIF7JmoxijaCwWKiQ8SDJeUCxkIUo7ZYfeG6z1XT0AwAWo1bbVkTINSNA1+pp2buklMh UZRw== X-Gm-Message-State: AOAM5323BGLEyY+y0SCpZNsIqyS+/H3uQipUXbwF8wGi2FFnl2Ja8+Zi fJfWxhepllJSzASvn5KiHgIN8TQ60DT3rS1NgwBxrw6BbPI= X-Google-Smtp-Source: ABdhPJzwMNVw3MnvRGCl5s8CqjjSmfxGsYs/mTI8IGRCOjOHUFwpTFwNcdkcoiWBk2s1NN7Sl7n4mR46sQ607Ya46OE= X-Received: by 2002:a05:6e02:168f:: with SMTP id f15mr6373162ila.283.1633274296640; Sun, 03 Oct 2021 08:18:16 -0700 (PDT) MIME-Version: 1.0 From: Dave Taht Date: Sun, 3 Oct 2021 08:18:04 -0700 Message-ID: To: starlink@lists.bufferbloat.net Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: [Starlink] 1986DA analyzed X-BeenThere: starlink@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Starlink has bufferbloat. Bad." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Oct 2021 15:18:17 -0000 A huge factor in my interest in starlink - in trying to improve their internet service - is to help get humanity into the solar system. I'm not a huge fan of "mars direct" and have always felt, a little detour, to pick up some needed materials from off-planet, was desirable. The upcoming psyche mission (to be flown on a falcon heavy) is pretty exciting, see here: https://psyche.asu.edu/mission/instruments-science-investigations/ BUT, solar electric propulsion doesn't work all that well that far in the belt, that mission's duration is 6+ years just to get anywhere, and I'd always felt that trying to find suitable asteroids in more reachable orbits, particularly for "deep impact" style missions, would reduce the cycle time from launch to data. This paper crossed my desk this morning, discussing two NEAs (near earth asteroids) that look to be very similar to psyche in their metallic composition: https://iopscience.iop.org/article/10.3847/PSJ/ac235f/pdf The money quote (literally): "the annual value, if mined, over 50 years, was 233 billion dollars/yr". Oddly enough, they didn't mention what the delta-v required to get to either, was, so I looked that up via lance benners tool, which appears to be down at the moment, or has moved, this is via archive.org, which lists candidates with as low as half the delta-v required to reach the moon or mars. https://web.archive.org/web/20210202035814/https://echo.jpl.nasa.gov/~lance= /delta_v/delta_v.rendezvous.html DELTA-V (ASTEROID)/ PROVISIONAL DELTA-V DELTA-V = FOR RANK PERCENTILE ASTEROID NAME DESIGNATION (KM/S) THE MOON MARS H (mag) a (AU) e i (deg) 9545 45.79 (6178) 1986 DA 7.197 1.200 1.142 15.1 2.823 0.582 4.3 RADAR 2016 ED85 wasn't listed, and the delta-v required of 7.197 is sadly a bit more than the 6.3 of mars... usually an impact mission is much less but I can't seem to find the right url for that. ... It is terribly ambitious for me to not only strongly suggest that starlink put vastly better queue management into their three main routing systems in their next release, so to provide low latency for all packets, not just ping, but to then also suggest they look strongly into the possibilities of asteroid mining[1] to get them on their way to mars... but it's a lovely sunday morning, and a good day to dream. I return now to fixing up my broken down motor in my boat, and prepping to log out, and sail away. [1] https://the-edge.blogspot.com/2012/04/for-nearly-9-years-ive-had-one-of= -my.html --=20 Fixing Starlink's Latencies: https://www.youtube.com/watch?v=3Dc9gLo6Xrwgw Dave T=C3=A4ht CEO, TekLibre, LLC