The mass density of Earth's thermosphere (∼ 90–600 km altitude) is a critical parameter for
low Earth orbit prediction because of the atmospheric drag on satellites in this region. In this …

Multiple coronal and heliospheric models have been recently upgraded at the Community
Coordinated Modeling Center (CCMC), including the Wang‐Sheeley‐Arge (WSA)‐Enlil …

Abstract On 3 February 2022, at 18: 13 UTC, SpaceX launched and a short time later
deployed 49 Starlink satellites at an orbit altitude between 210 and 320 km. The satellites …

We develop and test approximate analytic expressions relating time-dependent atmospheric
density errors to errors in the mean motion and mean anomaly orbital elements. The mean …

So far studies of the effect of geomagnetic storms on thermospheric density and satellite
orbits have been mainly focused on severe storm events caused by Coronal Mass Ejections …

Enhanced energy input from the magnetosphere to the upper atmosphere during
geomagnetic storms has a profound effect on thermospheric density and consequently near …

Density uncertainty is the major driver of unrealistic covariances for objects in low Earth
orbits. The analytic propagation of uncertainties in the neutral atmospheric density to …

Since the first satellites entered Earth orbit in the late 1950's and early 1960's, the influences
of solar and geomagnetic variability on the satellite drag environment have been studied …

THE growing population of satellites and orbital debris in Earth's orbit increases the spatial
density, and therefore the risk of collision events between objects. Therefore, satellites and …

In our previous study (Li et al., 2017, https://doi. org/10.1007/s11430-016-9052-1), we
derived the satellite energy‐decay with a 20‐min resolution based on the Precise Orbit …