Sentry (monitoring system): Revision history

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curprev 08:1108:11, 2 August 2022‎ Kheider talk contribs‎ 14,442 bytes 0‎ NX1 || 0.74% || 2077-11-29 || 9 || 25 undo

curprev 09:3309:33, 27 July 2022‎ Kheider talk contribs‎ 14,442 bytes 0‎ →‎Sentry Risk Table: https://archive.ph/5cCy1 undo

curprev 16:3716:37, 25 July 2022‎ Kheider talk contribs‎ 14,442 bytes 0‎ NX1: Arc = 21.9 days @ 0.81% (8.1e-3) ==> https://archive.ph/ZAjxY undo

curprev 07:2307:23, 23 July 2022‎ Kheider talk contribs‎ 14,442 bytes +63‎ →‎Sentry Risk Table: +2022 NX1 undo

curprev 06:4806:48, 11 July 2022‎ Kheider talk contribs‎ 14,379 bytes +476‎ In 2021 JPL launched Sentry-II which handles the Yarkovsky effect that can significantly change a small asteroids path over decades and centuries.<ref name="Sentry-II"/> undo

curprev 13:0113:01, 10 June 2022‎ Kheider talk contribs‎ 13,903 bytes −25‎ Of the 130 asteroids with better than a 1-in-10,000 chance of impacting Earth only 101955 Bennu is larger than 50 meters in diameter. (remove 1950 DA @ 1:34,000) undo

curprev 13:1213:12, 9 June 2022‎ Kheider talk contribs‎ 13,928 bytes 0‎ 08EM68 missed 84 VIs (next is 2022-09-07) undo
curprev 13:0113:01, 9 June 2022‎ Kheider talk contribs‎ 13,928 bytes 0‎ 35,979 VIs (35,979/1413=25.4) // avg size 130 undo
curprev 12:4812:48, 9 June 2022‎ Kheider talk contribs‎ 13,928 bytes 0‎ →‎Numbers: 29,000 NEAs // 1413 listed // 2956 removed undo

curprev 23:4223:42, 8 June 2022‎ Kheider talk contribs‎ 13,928 bytes +57‎ →‎Sentry Risk Table: +| {{mp|2022 EK|4}} || 0.34% || 2081-03-15 || 18 || 12 undo

curprev 03:3703:37, 9 February 2022‎ Exoplanetaryscience talk contribs‎ 13,871 bytes −57‎ No edit summary undo

curprev 03:0903:09, 6 February 2022‎ Exoplanetaryscience talk contribs‎ 13,928 bytes +1‎ No edit summary undo

curprev 10:3410:34, 17 January 2022‎ Kheider talk contribs‎ 13,927 bytes +444‎ More eccentric orbits (such as {{mp|2011 BT|59}}) that extend to nearly the orbit of Jupiter can make atmospheric entry at velocities of ~40 km/s.<ref name=velocity/> undo

curprev 17:0717:07, 15 January 2022‎ Kheider talk contribs‎ 13,483 bytes −2‎ 34,996 / 1365 = No change // 1/(3.29E-3) undo
curprev 16:4116:41, 15 January 2022‎ Kheider talk contribs‎ 13,485 bytes +1‎ →‎Numbers: 28000 NEOs, 1365 risk=listed. 20 PHOs, Chel=1365-370=995, 2,888 removed undo

curprev 16:4016:40, 13 January 2022‎ Spiffy sperry talk contribs‎ 13,484 bytes −22‎ →‎Sentry Risk Table: delete "in the last few years" since this list spans 10 years undo

curprev 21:0721:07, 6 December 2021‎ Pjvpjv talk contribs‎ 13,506 bytes +87‎ →‎External links: Added simplified list undo

curprev 00:1100:11, 5 December 2021‎ Pjvpjv talk contribs‎ m 13,419 bytes +76‎ →‎External links: Add one additional external list of possible collisions undo
curprev 00:0900:09, 5 December 2021‎ Pjvpjv talk contribs‎ m 13,343 bytes +23‎ →‎External links: Re-order to put all sentry links first, clarify other listings undo

curprev 09:4009:40, 14 November 2021‎ Kheider talk contribs‎ 13,320 bytes +121‎ The average size of an object on the default page of Sentry is 111 meters with an average impact probability of 1:30000. undo

curprev 09:3709:37, 2 November 2021‎ Kheider talk contribs‎ 13,199 bytes 0‎ 18/1291 = 0.0139 so 99% are not PHAs @ "140+ meters in diameter" undo
curprev 09:2909:29, 2 November 2021‎ Kheider talk contribs‎ 13,199 bytes +1‎ 34145 VI / 1291 asteroids = 26 VI per asteroid. (Some have 1 and some have thousands.) Only 18 PHAs risk-listed. 27000+ NEOs with only 1291 risk-listed. 2866 removed undo
curprev 09:1709:17, 2 November 2021‎ Kheider talk contribs‎ 13,198 bytes 0‎ 2008 EM68 == 82 of 1147 through 2021-09-12 undo

curprev 03:0403:04, 22 October 2021‎ WikiCleanerBot talk contribs‎ m 13,198 bytes 0‎ v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

curprev 03:3003:30, 16 October 2021‎ Exoplanetaryscience talk contribs‎ 13,198 bytes +36‎ →‎See also undo
curprev 03:3003:30, 16 October 2021‎ Exoplanetaryscience talk contribs‎ 13,162 bytes +283‎ →‎Scout undo
curprev 03:2203:22, 16 October 2021‎ Exoplanetaryscience talk contribs‎ 12,879 bytes +65‎ →‎Sentry Risk Table undo

curprev 13:0713:07, 13 October 2021‎ Kheider talk contribs‎ 12,814 bytes +126‎ rise 2009 JF1 undo

curprev 09:0109:01, 25 August 2021‎ Kheider talk contribs‎ 12,688 bytes 0‎ →‎Numbers: 25000/26000 NEOs, 1146/1241 listed, 30/19 "H<22", 97%/98% "H>22", 800/900 chelys "H>26", 2660/2821 removed undo

curprev 05:3605:36, 16 August 2021‎ Kiwikiu talk contribs‎ m 12,688 bytes +1‎ →‎Sentry Risk Table: typo corrected undo

curprev 16:2916:29, 3 August 2021‎ JoeNMLC talk contribs‎ 12,687 bytes +83‎ copyedit, add portal bar undo
curprev 16:2816:28, 3 August 2021‎ JoeNMLC talk contribs‎ 12,604 bytes +172‎ →‎See also: additional undo

curprev 17:4417:44, 30 June 2021‎ Kheider talk contribs‎ 12,432 bytes −57‎ 21LD6 @ 1/4300 w/ 26 day arc undo

curprev 23:5523:55, 29 June 2021‎ GreenC bot talk contribs‎ 12,489 bytes +448‎ Rescued 3 archive links; reformat 4 links. Wayback Medic 2.5 undo

curprev 17:5117:51, 16 June 2021‎ Kheider talk contribs‎ 12,041 bytes 0‎ 21LD6 @ 0.74% undo

curprev 13:0513:05, 15 June 2021‎ Kheider talk contribs‎ 12,041 bytes +1‎ update 20CD3 undo
curprev 02:0002:00, 15 June 2021‎ Kheider talk contribs‎ 12,040 bytes +57‎ +{{mp|2021 LD|6}} || 0.60% || 2079-06-28 || 11 || 10 undo

curprev 18:2818:28, 16 May 2021‎ Maxipups Mamsipupsovich talk contribs‎ 11,983 bytes +3‎ No edit summary undo Tag: Visual edit

curprev 14:2014:20, 27 April 2021‎ Kheider talk contribs‎ 11,980 bytes +141‎ →‎Sentry Risk Table: The switch to DE441 also briefly added in the harmless Jupiter trojan 2014 ES57 with a very low impact probability of about 1:1-billion. undo

curprev 20:3620:36, 19 April 2021‎ Kheider talk contribs‎ m 11,839 bytes −1‎ move VV up one undo
curprev 13:2713:27, 19 April 2021‎ Kheider talk contribs‎ 11,840 bytes +179‎ which removed the very low impact probability of short-arc 2014 MV67 which had been less than 1:1-billion. undo

curprev 10:4710:47, 17 April 2021‎ Kheider talk contribs‎ 11,661 bytes 0‎ DE441/SB441-N16 update undo

curprev 21:4221:42, 12 April 2021‎ Kheider talk contribs‎ 11,661 bytes +132‎ In April 2021, Sentry will be transitioning to DE441. undo

curprev 20:4620:46, 3 April 2021‎ Arjayay talk contribs‎ m 11,529 bytes −4‎ Duplicate word removed undo

curprev 22:1622:16, 2 April 2021‎ Kheider talk contribs‎ 11,533 bytes +61‎ "as they were likely quite distant from the Earth at the time" undo
curprev 15:1615:16, 2 April 2021‎ Kheider talk contribs‎ 11,472 bytes +278‎ There are 1146 near-Earth asteroids listed on the risk table with 36,637 virtual impactor dates. For each asteroid listed on the risk table there are on average about 30 virtual impactors. Only about 30 objects on the risk list are large enough to be considered potentially hazardous objects with a diameter greater than about 140 meters. undo

curprev 15:3815:38, 29 March 2021‎ Kheider talk contribs‎ 11,194 bytes +1‎ split lead into 2 paragraphs undo
curprev 15:2515:25, 29 March 2021‎ Kheider talk contribs‎ 11,193 bytes +11‎ Center for Near-Earth Object Studies undo
curprev 14:2014:20, 29 March 2021‎ Kheider talk contribs‎ 11,182 bytes +1‎ move 2020 VW up. undo
curprev 13:5413:54, 29 March 2021‎ Kheider talk contribs‎ 11,181 bytes 0‎ update 2020vv undo

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