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Lists using different epochs:
In the table listing Potentially hazardous asteroids with Earth MOID < 0.0004 AU, the fist entry, 1999 AN10, is listed with an MOID of 0.000003 AU (450 km; 280 mi). The page 1999 AN10, to which it points, states an MOID of 0.000708904 AU (106,050.5 km. Which is wrong ? Epitalon ( talk) 16:28, 25 June 2018 (UTC)
Fix: according to JPL Small-Body Database Browser, earth MOID is 2.83761E-6 au Epitalon ( talk) 17:01, 25 June 2018 (UTC)
For the record, the orbit (and therefore the MOID) changes every day! The JPL SBDB will update values for asteroids every 6 months or so (currently:2023-Sep-13 previously: 2023-Feb-25). Any source that states the MOID without stating the epoch it is defined at is pretty much worthless. -- Kheider ( talk) 12:41, 20 September 2023 (UTC)
Is there a reason why LD is not used? Apart from diverging MOIDs, I can imagine there might be no precise definition of "lunar distance", but writing that Apophis will pass within 0.1 LD (and this is an approximation of the value) says more than "0.0002056 AU" . And 40 LD, as another example is far more telling.
alex ( talk) 10:22, 17 September 2021 (UTC)
![]() | A fact from Minimum orbit intersection distance appeared on Wikipedia's
Main Page in the
Did you know column on 19 May 2009 (
check views). The text of the entry was as follows:
| ![]() |
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||
|
Lists using different epochs:
In the table listing Potentially hazardous asteroids with Earth MOID < 0.0004 AU, the fist entry, 1999 AN10, is listed with an MOID of 0.000003 AU (450 km; 280 mi). The page 1999 AN10, to which it points, states an MOID of 0.000708904 AU (106,050.5 km. Which is wrong ? Epitalon ( talk) 16:28, 25 June 2018 (UTC)
Fix: according to JPL Small-Body Database Browser, earth MOID is 2.83761E-6 au Epitalon ( talk) 17:01, 25 June 2018 (UTC)
For the record, the orbit (and therefore the MOID) changes every day! The JPL SBDB will update values for asteroids every 6 months or so (currently:2023-Sep-13 previously: 2023-Feb-25). Any source that states the MOID without stating the epoch it is defined at is pretty much worthless. -- Kheider ( talk) 12:41, 20 September 2023 (UTC)
Is there a reason why LD is not used? Apart from diverging MOIDs, I can imagine there might be no precise definition of "lunar distance", but writing that Apophis will pass within 0.1 LD (and this is an approximation of the value) says more than "0.0002056 AU" . And 40 LD, as another example is far more telling.
alex ( talk) 10:22, 17 September 2021 (UTC)