Sentry (monitoring system): Revision history

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curprev 14:5614:56, 13 October 2023‎ 159.196.99.227 talk‎ 16,719 bytes +1‎ →‎Sentry Risk Table: date has long gone by undo

curprev 10:2010:20, 29 September 2023‎ Kheider talk contribs‎ 16,718 bytes 0‎ 37,736 VIs / 1,620 NEAs = 23 VI each undo
curprev 10:0410:04, 29 September 2023‎ Kheider talk contribs‎ 16,718 bytes −57‎ 23HM4 now 85 day arc: https://cneos.jpl.nasa.gov/sentry/details.html#?des=2023%20HM4 undo

curprev 17:2917:29, 27 September 2023‎ 170.140.105.7 talk‎ 16,775 bytes +200‎ →‎Sentry Risk Table undo

curprev 22:2622:26, 25 September 2023‎ Rockstone35 talk contribs‎ 16,575 bytes +27‎ Add convert from km/s to mi/s undo
curprev 16:0816:08, 25 September 2023‎ Novem Linguae talk contribs‎ 16,548 bytes +1‎ ce undo Tag: Visual edit

curprev 09:0409:04, 10 September 2023‎ Orenburg1 talk contribs‎ m 16,547 bytes +1‎ ce undo

curprev 02:3102:31, 21 August 2023‎ GreenC bot talk contribs‎ 16,546 bytes 0‎ Reformat 1 citation per Category:CS1 errors: archive-url. Wayback Medic 2.5 undo

curprev 12:2212:22, 11 June 2023‎ Kheider talk contribs‎ 16,546 bytes +57‎ +23 HM4 (10 meters and 1:160 for 2118-05-07) undo

curprev 09:2209:22, 4 May 2023‎ Kheider talk contribs‎ 16,489 bytes 0‎ 160 asteroids with better than a 1-in-10,000 (second largest is 2000 SB45 at 45 meters) undo

curprev 18:4018:40, 15 March 2023‎ Kheider talk contribs‎ 16,489 bytes +325‎ replace 05ED224 ... 2022 PX1 on 11 August 2040 with a 1:330000 chance of impact. undo
curprev 17:4617:46, 15 March 2023‎ Kheider talk contribs‎ 16,164 bytes 0‎ 1,538 risk-listed of 31,534 NEOs (generating 36,718 VIs) with 3,069 previously risk-listed NEOs removed. undo

curprev 15:2015:20, 11 March 2023‎ Kheider talk contribs‎ 16,164 bytes +1‎ 05ED224 failed to kill you. undo

curprev 22:5822:58, 10 January 2023‎ Emike1955 talk contribs‎ m 16,163 bytes +93‎ →‎External links: Added external link to Scout Introduction page undo

curprev 11:4311:43, 2 January 2023‎ Kheider talk contribs‎ m 16,070 bytes 0‎ No edit summary undo

curprev 15:1815:18, 30 December 2022‎ Kheider talk contribs‎ 16,070 bytes −1‎ 06RH120 = 1.3% undo
curprev 15:1215:12, 30 December 2022‎ Kheider talk contribs‎ 16,071 bytes 0‎ 1482/1510 NEAs listed, 36,131/36,345 VIs, 30,620/31121 NEAs overall, 3032/3051 removed undo

curprev 14:3214:32, 26 December 2022‎ Kheider talk contribs‎ 16,071 bytes +7‎ Rise 2022 YO1 undo

curprev 09:4309:43, 23 December 2022‎ Kheider talk contribs‎ 16,064 bytes +64‎ Return of 2010 RF12 ... I'm back! undo

curprev 17:0917:09, 20 December 2022‎ Kheider talk contribs‎ 16,000 bytes +55‎ YO! undo
curprev 13:0413:04, 20 December 2022‎ Kheider talk contribs‎ 15,945 bytes −55‎ update 22nx1 (arc from 56 days to 142 days), 22ek4 (removed 2022-12-01 with 270 day arc) undo

curprev 08:4808:48, 13 November 2022‎ Kheider talk contribs‎ 16,000 bytes +165‎ For objects larger than the Chelyabinsk meteor and better than 1:1 million also include Impact Probability ≥ 1e-6 and H≤26 (17–38 meters). undo
curprev 07:5007:50, 13 November 2022‎ Kheider talk contribs‎ 15,835 bytes +56‎ →‎Sentry Risk Table: +22SX55 undo

curprev 07:0807:08, 12 November 2022‎ Kheider talk contribs‎ m 15,779 bytes −1‎ sp undo

curprev 10:5810:58, 11 November 2022‎ Kheider talk contribs‎ 15,780 bytes +16‎ {{anchor|2023}} undo

curprev 22:4122:41, 10 November 2022‎ Citation bot talk contribs‎ 15,764 bytes −2‎ Alter: title. | Use this bot. Report bugs. | Suggested by Abductive | Category:Articles containing potentially dated statements from October 2022 | #UCB_Category 924/953 undo
curprev 13:4713:47, 10 November 2022‎ Kheider talk contribs‎ m 15,766 bytes 0‎ No edit summary undo
curprev 13:4513:45, 10 November 2022‎ Kheider talk contribs‎ 15,766 bytes 0‎ 1451/1482 NEAs, 35549/36131 VIs // 1482-385=~1100 Chelyabinsk // 147=1e-4 (1:10000) undo

curprev 23:1823:18, 9 November 2022‎ Kheider talk contribs‎ 15,766 bytes +1,428‎ The asteroid with the greatest chance of impacting Earth in 2023 is {{mp|2016 LP|10}} (4-meters in diameter) with less than a 1-day observation arc.<ref name="VIs"/> undo
curprev 21:3921:39, 9 November 2022‎ 2a00:23c5:fe18:2701:64ea:3df:8b66:afba talk‎ 14,338 bytes 0‎ comma not semicolon undo
curprev 18:5918:59, 9 November 2022‎ Kheider talk contribs‎ 14,338 bytes −126‎ No edit summary undo

curprev 05:5105:51, 17 October 2022‎ 124.110.172.170 talk‎ 14,464 bytes +2‎ →‎Numbers undo

curprev 21:5621:56, 10 October 2022‎ Meno25 talk contribs‎ 14,462 bytes −11‎ →‎See also undo

curprev 08:3608:36, 4 October 2022‎ Kheider talk contribs‎ 14,473 bytes +35‎ →‎References undo
curprev 08:3108:31, 4 October 2022‎ Kheider talk contribs‎ 14,438 bytes +27‎ No edit summary undo

curprev 14:5014:50, 2 October 2022‎ Kheider talk contribs‎ 14,411 bytes 0‎ 2011 BT59 removed on 2022-09-01 so go with 2015 RD36 undo
curprev 14:3914:39, 2 October 2022‎ Kheider talk contribs‎ 14,411 bytes 0‎ @AVERAGE(G1:G23) = 0.122 undo

curprev 11:4011:40, 1 October 2022‎ Kheider talk contribs‎ 14,411 bytes 0‎ 30080 NEOs, 35,549 VIs, 1451 risk-listed, 17 H<22, 3003 removed undo

curprev 18:5418:54, 19 September 2022‎ Kheider talk contribs‎ 14,411 bytes −61‎ replace 2010 RF12 (recovered) with 2020 CD3 undo

curprev 12:3212:32, 12 September 2022‎ Kheider talk contribs‎ 14,472 bytes −63‎ Remove 2022 QX4 now that the observation arc has jumped from 17 days to 9 years. undo

curprev 12:2112:21, 7 September 2022‎ Kheider talk contribs‎ 14,535 bytes 0‎ →‎Sentry Risk Table: QX4 @ 0.69% https://archive.ph/hikGc undo

curprev 12:3912:39, 6 September 2022‎ Kheider talk contribs‎ 14,535 bytes 0‎ →‎Sentry Risk Table undo
curprev 01:2701:27, 6 September 2022‎ Kheider talk contribs‎ 14,535 bytes +62‎ →‎Sentry Risk Table: NX1 @ 1.2% +QX4 undo

curprev 13:2713:27, 26 August 2022‎ Kheider talk contribs‎ 14,473 bytes 0‎ →‎Numbers: 29500 NEOs, 1431 risk-listed, 17 H<22, 2981 removed undo
curprev 12:5612:56, 26 August 2022‎ 90.167.94.198 talk‎ 14,473 bytes 0‎ →‎Numbers undo

curprev 02:0202:02, 15 August 2022‎ Kheider talk contribs‎ 14,473 bytes +18‎ →‎Scout: Near-Earth Object Confirmation Page undo

curprev 18:2218:22, 5 August 2022‎ Kheider talk contribs‎ 14,455 bytes +224‎ →‎Sentry Risk Table: Sentry-II defaults to a Impact Pseudo-Observation (IOBS) analysis technique that runs an extended orbit-determination filter that tries to converge to an impacting solution compatible with the observational data. undo
curprev 15:3915:39, 5 August 2022‎ Kheider talk contribs‎ 14,231 bytes +94‎ No edit summary undo

curprev 22:1522:15, 3 August 2022‎ Kheider talk contribs‎ 14,137 bytes −305‎ 08EM68 removed from Sentry. Replace with 2017 SA20 undo
curprev 10:3910:39, 3 August 2022‎ Kheider talk contribs‎ 14,442 bytes 0‎ NX1 || 0.83% || 2076-12-01 || 9 || 31 undo

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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