Hi P1X3LZIMMY,
I noticed that you are trying to update the orbital elements of TNOs using information from the JPL Small-Body Database (JPL-SBDB) Lookup page. While I do appreciate your intent to keep things up to date, I must let you know that JPL-SBDB isn't very accurate for TNO orbits because it provides them with respect to a heliocentric reference frame--that is, the orbital information is centered about the Sun, which noticeably wobbles around the Solar System Barycenter, which is stationary in contrast. Because the Sun itself is a moving reference frame, the heliocentric orbital elements JPL-SBDB provides changes noticeably over short time scales (or epochs), and that can be problematic when describing orbital elements over the long-term.
For this reason, I ask you to not use heliocentric orbital elements of TNOs straight from JPL-SBDB. Instead, please use barycentric orbital elements from the JPL Horizons On-Line Ephemeris System--that website is much more flexible for obtaining orbital information since you can choose any orbital reference frame and epoch for any minor planet.
I reverted your edits to 2021 RR205 and I'm currently working on revising the 2015 KG163 infobox to include barycentric elements (FYI, a lot of TNO articles haven't been updated to include barycentric elements, I haven't gotten around to doing that...). And one more thing to mention, I noticed you tend to remove the excess spaces in the infobox source, like you did for 2021 RR205. Personally, I'm not a big fan of that because it makes the infobox look too compact, which makes it less readable and more difficult to edit in the source editor.
Apologies if my response sounds a bit harsh--I mean no hard feelings, I'm just trying to keep things here in check. If you're unsure about how to cite JPL-Horizons for Wikipedia, see this talk page discussion I brought up last year: Wikipedia talk:WikiProject Astronomy/Archive 34#Using barycentric elements for all TNOs and high-aphelion minor planets/comets. In general, I prefer using an epoch of JD 2460000.5 since it's a recent and nicely round date.
Hopefully you find this helpful. Happy editing!
Nrco0e ( talk) 04:21, 5 July 2023 (UTC)
P1X3LZIMMY, what was the source that 26P/Grigg–Skjellerup is coming to perihelion in Feb 2024 instead of Christmas day 2023? I am curious if a well known website has the date listed wrong so that I can notify them to correct it. -- Kheider ( talk) 11:00, 26 July 2023 (UTC)
Hi P1X3LZIMMY,
I noticed that you are trying to update the orbital elements of TNOs using information from the JPL Small-Body Database (JPL-SBDB) Lookup page. While I do appreciate your intent to keep things up to date, I must let you know that JPL-SBDB isn't very accurate for TNO orbits because it provides them with respect to a heliocentric reference frame--that is, the orbital information is centered about the Sun, which noticeably wobbles around the Solar System Barycenter, which is stationary in contrast. Because the Sun itself is a moving reference frame, the heliocentric orbital elements JPL-SBDB provides changes noticeably over short time scales (or epochs), and that can be problematic when describing orbital elements over the long-term.
For this reason, I ask you to not use heliocentric orbital elements of TNOs straight from JPL-SBDB. Instead, please use barycentric orbital elements from the JPL Horizons On-Line Ephemeris System--that website is much more flexible for obtaining orbital information since you can choose any orbital reference frame and epoch for any minor planet.
I reverted your edits to 2021 RR205 and I'm currently working on revising the 2015 KG163 infobox to include barycentric elements (FYI, a lot of TNO articles haven't been updated to include barycentric elements, I haven't gotten around to doing that...). And one more thing to mention, I noticed you tend to remove the excess spaces in the infobox source, like you did for 2021 RR205. Personally, I'm not a big fan of that because it makes the infobox look too compact, which makes it less readable and more difficult to edit in the source editor.
Apologies if my response sounds a bit harsh--I mean no hard feelings, I'm just trying to keep things here in check. If you're unsure about how to cite JPL-Horizons for Wikipedia, see this talk page discussion I brought up last year: Wikipedia talk:WikiProject Astronomy/Archive 34#Using barycentric elements for all TNOs and high-aphelion minor planets/comets. In general, I prefer using an epoch of JD 2460000.5 since it's a recent and nicely round date.
Hopefully you find this helpful. Happy editing!
Nrco0e ( talk) 04:21, 5 July 2023 (UTC)
P1X3LZIMMY, what was the source that 26P/Grigg–Skjellerup is coming to perihelion in Feb 2024 instead of Christmas day 2023? I am curious if a well known website has the date listed wrong so that I can notify them to correct it. -- Kheider ( talk) 11:00, 26 July 2023 (UTC)