2025-04-14, 04:40 PM
Hi theolouis,
You can find detailed close approach data for minor planet 2025 GD at this website:
https://ssd.jpl.nasa.gov/tools/sbdb_look...D&view=OPC
I made an error about this NEO's future close approaches because some of the close approaches are with Mars. Here are some of the predicted close approaches for Earth and Mars:
2043-Apr-13 13:48 ± 6_12:23 Earth Nominal 0.10702 AU Minimum 0.03851 AU Maximum 0.19084 AU V Relative=10.69 km/sec
2068-Mar-26 18:39 ± 4_23:37 Earth Nominal 0.17010 AU Minimum 0.07502 AU Maximum 0.26557 AU V Relative=14.69 km/sec
2071-Jul-14 04:00 ± 23:47 Mars Nominal 0.01380 AU Minimum 0.01365 AU Maximum 0.07242 AU V Relative= 8.82 km/sec
Once you get to the Small Body Database Lookup webpage, you can input the designation of other minor planets of interest.
As for how the orbits evolve over time, all of the minor planets (MPs) are subject to gravitational perturbations caused by the major planets as the MPs pass close by. The closer the pass, the greater the perturbation or deflection of the MP's motion. This changes the parameters of the orbit for the MP's motion after the close approach. There are also smaller effects on the MP's motion caused by solar irradiation on the surface of the MP. It's very hard to predict the motion of these objects accurately more than 100 years into the future, so even the pros don't usually try. You can see that the uncertainty for the close approach time with Earth in 2043 is 6 days and 12 hours. Oddly, it's only ~5 days in 2068.
Hope this helps,
Phil S.
You can find detailed close approach data for minor planet 2025 GD at this website:
https://ssd.jpl.nasa.gov/tools/sbdb_look...D&view=OPC
I made an error about this NEO's future close approaches because some of the close approaches are with Mars. Here are some of the predicted close approaches for Earth and Mars:
2043-Apr-13 13:48 ± 6_12:23 Earth Nominal 0.10702 AU Minimum 0.03851 AU Maximum 0.19084 AU V Relative=10.69 km/sec
2068-Mar-26 18:39 ± 4_23:37 Earth Nominal 0.17010 AU Minimum 0.07502 AU Maximum 0.26557 AU V Relative=14.69 km/sec
2071-Jul-14 04:00 ± 23:47 Mars Nominal 0.01380 AU Minimum 0.01365 AU Maximum 0.07242 AU V Relative= 8.82 km/sec
Once you get to the Small Body Database Lookup webpage, you can input the designation of other minor planets of interest.
As for how the orbits evolve over time, all of the minor planets (MPs) are subject to gravitational perturbations caused by the major planets as the MPs pass close by. The closer the pass, the greater the perturbation or deflection of the MP's motion. This changes the parameters of the orbit for the MP's motion after the close approach. There are also smaller effects on the MP's motion caused by solar irradiation on the surface of the MP. It's very hard to predict the motion of these objects accurately more than 100 years into the future, so even the pros don't usually try. You can see that the uncertainty for the close approach time with Earth in 2043 is 6 days and 12 hours. Oddly, it's only ~5 days in 2068.
Hope this helps,
Phil S.